BMW Vehicle Models 740i 2016-present Torque Specifications
BMW Vehicle Models 740i 2016-present

BMW Vehicle Models 740i 2016-present Torque Specifications

Complete BMW Vehicle Models 740i 2016-present torque specifications guide. Includes factory-specified torque values, torque sequences, and technical specifications for all components including body, brakes, drivetrain, electrical, emissions sensors, fuel, exhaust, HVAC, and suspension. Essential information for proper assembly and maintenance.

Updated

Important Information

Safety guidelines and reference information for proper torque application

Quick Reference Guide
ft-lbs → Nm
× 1.356
ft-lbs → kg-m
× 0.138
Nm → ft-lbs
× 0.738
in-lbs → ft-lbs
× 0.083

Common Torque Patterns

Star Pattern

Used for wheels and other circular bolt patterns

Star Pattern torque pattern diagram showing proper bolt tightening sequence
Cross Pattern

Used for gaskets and cover plates

Cross Pattern torque pattern diagram showing proper bolt tightening sequence
Sequential Pattern

Used for head bolts and other critical components

Sequential Pattern torque pattern diagram showing proper bolt tightening sequence

Common Mistakes to Avoid

Over-tightening

Exceeding the specified torque value can stretch or break fasteners, damage threads, or crack components.

Prevention:

Always use a calibrated torque wrench and follow specifications exactly.

Incorrect Torque Sequence

Tightening bolts in the wrong order can cause uneven pressure distribution and potential leaks or damage.

Prevention:

Follow the manufacturer's specified torque sequence pattern.

Dirty Threads

Dirt, rust, or old thread locker can affect torque readings and proper fastener tension.

Prevention:

Clean and inspect all threads before assembly. Use new thread locker if specified.

Reusing TTY Bolts

Torque-to-yield bolts are designed to stretch and must not be reused.

Prevention:

Always replace TTY bolts with new ones. They are single-use only.

Dry vs. Lubricated

Not accounting for whether torque specs are for dry or lubricated fasteners can lead to incorrect tension.

Prevention:

Check if specs are for dry or lubricated threads. Use specified lubricant when required.

Recommended Tools

Torque Wrench (1/4" Drive)

Range: 2-25 ft-lbs
Small fasteners, delicate components

Torque Wrench (3/8" Drive)

Range: 10-100 ft-lbs
Most common automotive fasteners

Torque Wrench (1/2" Drive)

Range: 30-250 ft-lbs
Large fasteners, wheels

Angle Gauge

Torque-to-yield (TTY) bolts

Torque Wrench Care

  • Calibrate annually or after 5,000 clicks
  • Store at lowest setting
  • Keep clean and lubricated

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Torque Calculator

Convert between different torque units

3.0l Engine

Torque specifications for 3.0L Engine

Cylinder Head

1

Cylinder Head Bolts

M12 x 1.75
Torque Specification
1. 20 ft-lbs (27 N·m) 2. 90° 3. 90°
Important Notes
These are torque-to-yield (TTY) bolts. Use new bolts. Follow specific BMW torque sequence. Initial torque value is an estimate, final angle torque is critical.
2

Valve Cover Bolts

M6 x 1.0
Torque Specification
10 ft-lbs (14 N·m)
Important Notes
Tighten evenly in a crisscross pattern to ensure proper gasket seal.
3

Rocker Arms/Shafts Bolts

M8 x 1.25
Torque Specification
12 ft-lbs (16 N·m)
Important Notes
Tighten evenly to ensure proper valve operation.
4

Camshaft Position Sensor Bolt

M6 x 1.0
Torque Specification
8 ft-lbs (11 N·m)
Important Notes
Tighten to ensure proper sensor function.
5

Variable Valve Timing (VANOS) Solenoid Bolts

M6 x 1.0
Torque Specification
8 ft-lbs (11 N·m)
Important Notes
Tighten to ensure proper solenoid function.

Engine Block

1

Main Bearing Bolts

M12 x 1.5
Torque Specification
1. 20 ft-lbs (27 N·m) 2. 60°
Important Notes
Use new bolts. Follow the specified torque sequence. Initial torque is an estimate, final angle torque is critical.
2

Oil Pan Bolts

M6 x 1.0
Torque Specification
10 ft-lbs (14 N·m)
Important Notes
Tighten evenly in a crisscross pattern to ensure proper gasket seal.
3

Oil Drain Plug Bolt

M14 x 1.5
Torque Specification
30 ft-lbs (41 N·m)
Important Notes
Use a new washer for the oil drain plug.
4

Oil Filter Housing Bolt

M8 x 1.25
Torque Specification
25 ft-lbs (34 N·m)
Important Notes
Tighten evenly to prevent leaks.
5

Crankshaft Position Sensor Bolt

M6 x 1.0
Torque Specification
8 ft-lbs (11 N·m)
Important Notes
Tighten to ensure proper sensor function.
6

Knock Sensor Bolt

M8 x 1.25
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Check BMW service manual for exact specification.
7

Engine Mount Bolts

M12 x 1.75
Torque Specification
55 ft-lbs (75 N·m)
Important Notes
Refer to specific BMW service manual for precise locations and torque values, value is estimated based on similar bolts.

Connecting Rods

1

Connecting Rod Nuts

M9 x 1.0
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Tighten evenly to ensure proper bearing function.

Flywheel And Drivetrain

1

Flywheel Bolts

M12 x 1.5
Torque Specification
60 ft-lbs (81 N·m)
Important Notes
Use new bolts and follow a star pattern.
2

Crankshaft Pulley/Harmonic Balancer Bolt

M18 x 1.5
Torque Specification
70 ft-lbs (95 N·m)
Important Notes
Hold crankshaft while tightening. May require special tool.

Timing System

1

Timing Chain Tensioner Bolt

M8 x 1.25
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Tighten to ensure proper chain tension.
2

Camshaft Sprocket Bolts

M10 x 1.25
Torque Specification
70 ft-lbs (95 N·m)
Important Notes
Hold the camshaft when tightening.
3

Timing Chain Guide/Rail Bolts

M6 x 1.0
Torque Specification
8 ft-lbs (11 N·m)
Important Notes
Consult specific BMW service literature for precise locations and torques as there may be multiple.

Intake And Exhaust

1

Throttle Body Bolts

M6 x 1.0
Torque Specification
6 ft-lbs (8 N·m)
Important Notes
Tighten evenly to ensure proper seal.
2

Intake Manifold Bolts

M8 x 1.25
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Tighten evenly in a crisscross pattern to ensure proper seal.
3

Exhaust Manifold/Headers Bolts

M8 x 1.25
Torque Specification
20 ft-lbs (27 N·m)
Important Notes
Tighten evenly to prevent leaks.
4

EGR Valve Bolts

M6 x 1.0
Torque Specification
10 ft-lbs (14 N·m)
Important Notes
Tighten evenly to ensure a good seal.

Fuel System

1

Fuel Rail Bolts

M6 x 1.0
Torque Specification
6 ft-lbs (8 N·m)
Important Notes
Tighten evenly to ensure secure attachment.
2

Fuel Injector Rail Bolts

M6 x 1.0
Torque Specification
6 ft-lbs (8 N·m)
Important Notes
Tighten evenly to ensure secure attachment.
3

Fuel Injector Bolts

M5 x 0.8
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Tighten gently to avoid damaging the injectors.

Ignition System

1

Spark Plugs

M14 x 1.25
Torque Specification
20 ft-lbs (27 N·m)
Important Notes
Use a spark plug socket. Do not overtighten.
2

Ignition Coil Bolt

M6 x 1.0
Torque Specification
8 ft-lbs (11 N·m)
Important Notes
Tighten to secure the ignition coil correctly.

Cooling System

1

Water Pump Bolts

M6 x 1.0
Torque Specification
10 ft-lbs (14 N·m)
Important Notes
Tighten evenly to prevent leaks.
2

Water Pump Pulley Bolts

M8 x 1.25
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Tighten evenly to ensure proper pulley operation.
3

Thermostat Housing Bolts

M6 x 1.0
Torque Specification
10 ft-lbs (14 N·m)
Important Notes
Tighten evenly to prevent leaks.
4

Oil Cooler Lines/Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Refer to specific BMW service manual for exact locations and torque values.

Accessory Drive

1

Serpentine/Accessory Drive Belt Tensioner Bolt

M10 x 1.5
Torque Specification
25 ft-lbs (34 N·m)
Important Notes
Tighten to secure tensioner and maintain proper belt tension.
2

Drive Belt Idler Pulley Bolt

M10 x 1.5
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Tighten to ensure smooth belt operation.

Oil System Misc

1

Oil Filter Cap

N/A
Torque Specification
N/A
Important Notes
Hand tighten only. Do not overtighten.

8hp Transmission

Torque specifications for 8hp Transmission

Transmission Mounting

1

Transmission Mounting Bolts

M12 x 1.75
Torque Specification
45 ft-lbs (61 N·m)
Important Notes
Ensure proper alignment before tightening. Tighten in a cross pattern to ensure even clamping force.

Transmission Case

1

Transmission Oil Pan Bolts

M6 x 1.0
Torque Specification
10 ft-lbs (14 N·m)
Important Notes
Tighten in a cross pattern. Over-tightening can damage the pan or gasket causing leaks. Use a new gasket each time.
2

Transmission Drain and Fill Plugs

M18 x 1.5
Torque Specification
20 ft-lbs (27 N·m)
Important Notes
Use a new sealing washer or O-ring each time. Do not over-tighten as it may cause damage to the plug or case threads.

Mechatronic Unit

1

Mechatronic Unit Mounting Bolts

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Tighten in a cross pattern. These bolts are typically low torque and can strip easily if over-tightened. Exercise care when tightening these fasteners.
2

Valve Body Bolts

M5 x 0.8
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
If the valve body is a separate component, tighten in a cross pattern. Exercise care when tightening these low torque sensitive fasteners. Over-tightening can cause damage.

Torque Converter

1

Torque Converter Bolts

M10 x 1.5
Torque Specification
40 ft-lbs (54 N·m)
Important Notes
Tighten bolts in a star pattern. These are often single-use bolts and should be replaced when removed. Make sure threads are clean and free of debris before installation.

Output Shaft

1

Output Shaft Flange/Yoke Bolt

M14 x 1.5
Torque Specification
1. 45 ft-lbs (61 N·m) 2. 90°
Important Notes
This is a single-use bolt and must be replaced when removed. Ensure the flange is correctly aligned. Final tightening requires an angle torque procedure in addition to a torque specification.

Bellhousing

1

Transmission Bellhousing to Engine Block Bolts

M12 x 1.75
Torque Specification
45 ft-lbs (61 N·m)
Important Notes
Tighten these bolts in a cross pattern to ensure even clamping force and prevent any misalignment between the transmission and engine.

Oil Cooler Lines

1

Transmission Oil Cooler Line Bolts/Fittings

M8 x 1.25
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Use new sealing washers or O-rings. Over-tightening these bolts/fittings may cause damage and result in fluid leaks.

Body

Torque specifications for Body

Wheel Mounting

1

Wheel Lug Nuts

M14 x 1.25
Torque Specification
90 ft-lbs (122 N·m)
Important Notes
Tighten in a star pattern. Ensure wheel is fully seated against the hub before tightening. Verify torque after 50-100 miles of driving.

Fuel System

1

Fuel Tank Strap Bolts

M8 x 1.25
Torque Specification
20 ft-lbs (27 N·m)
Important Notes
Ensure straps are correctly positioned before tightening. Do not overtighten to avoid damaging the fuel tank.
2

Fuel Filler Neck Bolts

M6 x 1.0
Torque Specification
10 ft-lbs (14 N·m)
Important Notes
Do not overtighten to avoid damage to the filler neck or body panel.

Body Panels

1

Front Fender Mounting Bolts

M6 x 1.0
Torque Specification
8 ft-lbs (11 N·m)
Important Notes
Ensure proper panel alignment before tightening. Use a proper torque sequence to ensure even pressure to not damage the panel.
2

Door Mounting Bolts (Hinges to Body)

M8 x 1.25
Torque Specification
25 ft-lbs (34 N·m)
Important Notes
Ensure proper door alignment before tightening. Torque values may vary depending on the hinge location. Check for smooth door operation.
3

Hood Mounting Bolts (Hinges to Hood)

M8 x 1.25
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Ensure proper hood alignment before tightening. Do not overtighten.
4

Trunk Lid Mounting Bolts (Hinges to Lid)

M8 x 1.25
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Ensure proper trunk lid alignment before tightening. Do not overtighten.
5

Bumper Mounting Bolts

M10 x 1.5
Torque Specification
22 ft-lbs (30 N·m)
Important Notes
Ensure proper bumper alignment and gap before tightening. Do not overtighten. This is an estimated value.

Interior Components

1

Seat Mounting Bolts

M10 x 1.5
Torque Specification
35 ft-lbs (47 N·m)
Important Notes
Tighten evenly. Ensure seats are properly positioned and aligned before tightening. This is an estimated value.
2

Dashboard/Instrument Panel Mounting Bolts

M6 x 1.0
Torque Specification
12 ft-lbs (16 N·m)
Important Notes
Ensure proper panel alignment before tightening. Do not overtighten. This is an estimated value.
3

Sunroof/Moonroof Mounting Bolts

M6 x 1.0
Torque Specification
10 ft-lbs (14 N·m)
Important Notes
Ensure proper sunroof alignment before tightening. Do not overtighten. This is an estimated value.

Glass Mounting

1

Glass Attachment Bolts/Nuts

M6 x 1.0
Torque Specification
10 ft-lbs (14 N·m)
Important Notes
Tighten evenly. Ensure glass is properly positioned and aligned before tightening. Do not overtighten to avoid breakage. This is an estimated value.

Lighting

1

Headlight Mounting Bolts

M6 x 1.0
Torque Specification
7 ft-lbs (9.5 N·m)
Important Notes
Ensure proper headlight alignment before tightening. Do not overtighten to avoid damaging the light housing. This is an estimated value.
2

Taillight Mounting Bolts

M6 x 1.0
Torque Specification
7 ft-lbs (9.5 N·m)
Important Notes
Ensure proper taillight alignment before tightening. Do not overtighten to avoid damaging the light housing. This is an estimated value.

Brakes

Torque specifications for Brakes

Brake Calipers

1

Caliper Mounting Bolts

M12 x 1.5
Torque Specification
80 ft-lbs (108 N·m)
Important Notes
These bolts secure the caliper directly to the mounting bracket. Ensure proper thread engagement before tightening. Clean threads are critical for accurate torque values.
2

Caliper Bleeder Screw

M7 x 1.0
Torque Specification
8 ft-lbs (11 N·m)
Important Notes
This bleeder screw is responsible for releasing air from the brake hydraulic circuit. Estimated Value.
3

Brake Pad Retaining Pin/Clip Bolts

M6 x 1.0
Torque Specification
12 ft-lbs (16 N·m)
Important Notes
These bolts secure the retaining pins or clips that hold the brake pads in place. Estimated Value.

Caliper Mounting Brackets

1

Mounting Bracket Bolts

M14 x 1.5
Torque Specification
125 ft-lbs (170 N·m)
Important Notes
These are high-strength bolts. Apply even torque to ensure the bracket is securely attached. Clean threads and correct torque are essential for brake safety.

Brake Rotors

1

Rotor Retaining Bolt

M8 x 1.25
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
These bolts hold the rotor to the hub during wheel installation. Do not overtighten these, as they are only for securing the rotor during installation. Estimated Value.

Brake Lines

1

Brake Line Banjo Bolt

M10 x 1.0
Torque Specification
20 ft-lbs (27 N·m)
Important Notes
This specification covers Banjo bolt fittings for hydraulic brake lines. Tighten to the specified torque to avoid leaks. Estimated Value.

Drivetrain

Torque specifications for Drivetrain

Engine To Transmission

1

Flywheel Bolts

M12 x 1.5
Torque Specification
60 ft-lbs (81 N·m)
Important Notes
Apply torque in a star pattern. Inspect bolts for stretch, replace if necessary.
2

Flex Plate Bolts (Automatic Transmissions)

M12 x 1.5
Torque Specification
1. 75 ft-lbs (102 N·m) 2. 90°
Important Notes
Torque-to-yield bolts. Replace after each use. Apply torque in a star pattern. Final tightening requires an angle torque.
3

Transmission Mounting Bolts

M12 x 1.75
Torque Specification
45 ft-lbs (61 N·m)
Important Notes
Ensure transmission is properly aligned before tightening. Use a torque wrench for accurate setting.

Transmission Components

1

Transmission Oil Pan Bolts

M6 x 1.0
Torque Specification
10 ft-lbs (14 N·m)
Important Notes
Tighten evenly in a cross pattern. Do not overtighten, as it can damage the gasket. Use a new gasket with installation.
2

Transmission Drain and Fill Plugs

M18 x 1.5
Torque Specification
20 ft-lbs (27 N·m)
Important Notes
Use a new sealing washer with installation. Do not overtighten, as it can damage the transmission casing.

Driveshaft And Related

1

Propeller/Drive Shaft Bolts

M10 x 1.5
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Tighten evenly and securely to prevent vibrations and imbalance.
2

Driveshaft Flange Bolts at Transmission and Differential

M12 x 1.75
Torque Specification
1. 50 ft-lbs (68 N·m) 2. 60°
Important Notes
Apply torque in a star pattern. Final tightening requires an angle torque. Always use new bolts.
3

Center Support Bearing Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Tighten securely to vehicle chassis. Check driveshaft alignment prior to tightening.

Axles And Differentials

1

Drive Axle/Half Shaft Bolts

M10 x 1.5
Torque Specification
80 ft-lbs (108 N·m)
Important Notes
Ensure bolts are properly seated. Use a torque wrench for accurate settings.
2

CV Joint/Axle Nut

M24 x 1.5
Torque Specification
170 ft-lbs (230 N·m)
Important Notes
Tighten to the high value for proper bearing preload. Always use a new nut.
3

Differential Mounting Bolts

M14 x 2.0
Torque Specification
65 ft-lbs (88 N·m)
Important Notes
Tighten evenly to the subframe or chassis. Check differential alignment prior to tightening.
4

Differential Drain/Fill Plug

M18 x 1.5
Torque Specification
25 ft-lbs (34 N·m)
Important Notes
Use new sealing washer. Do not over tighten. Ensure correct fill level when completed.

Transfer Case Components

1

Transfer Case Mounting Bolts

M12 x 1.75
Torque Specification
55 ft-lbs (75 N·m)
Important Notes
Tighten evenly and securely to the transmission and chassis. Check alignment before final tightening.
2

Transfer Case Drain/Fill Plug

M18 x 1.5
Torque Specification
25 ft-lbs (34 N·m)
Important Notes
Use new sealing washer. Do not over tighten. Ensure correct fill level when completed.

Wheel Hub Components

1

Wheel Hub to Knuckle Bolts

M12 x 1.75
Torque Specification
105 ft-lbs (142 N·m)
Important Notes
Tighten securely and evenly for proper wheel alignment.

Electrical

Torque specifications for Electrical

Ignition System

1

Ignition Coil Mounting Bolt

M6 x 1.0
Torque Specification
8 ft-lbs (11 N·m)
Important Notes
Ensure bolts are threaded properly to prevent damage to valve cover threads. Torque to specification for proper electrical contact and coil seating.
2

Crankshaft Position Sensor Mounting Bolt

M6 x 1.0
Torque Specification
8 ft-lbs (11 N·m)
Important Notes
Ensure the sensor is properly seated before tightening. Over-tightening may damage the sensor or threads.
3

Camshaft Position Sensor Mounting Bolt

M6 x 1.0
Torque Specification
8 ft-lbs (11 N·m)
Important Notes
Ensure proper alignment of the sensor before tightening. Over-tightening may damage the sensor or threads.

Starting System

1

Starter Motor Mounting Bolt

M10 x 1.5
Torque Specification
30 ft-lbs (41 N·m)
Important Notes
Ensure the starter motor is properly aligned with the flywheel before tightening. Torque bolts evenly to prevent misalignment.

Charging System

1

Alternator Mounting Bolt

M8 x 1.25
Torque Specification
25 ft-lbs (34 N·m)
Important Notes
Ensure correct belt alignment during installation. Torque all mounting bolts to specified torque. If the alternator uses a mounting bracket, ensure both the bracket and alternator are properly torqued to the engine.

Battery System

1

Battery Terminal Nut

M8 x 1.25
Torque Specification
5 ft-lbs (7 N·m)
Important Notes
Do not over-tighten, as this may cause damage to the battery terminal. Use proper sized tools to avoid stripping the terminal bolts or nuts.

Control Modules

1

Engine Control Unit (ECU) Mounting Bolt

M5 x 0.8
Torque Specification
7 ft-lbs (9.5 N·m)
Important Notes
Ensure the ECU is aligned correctly before tightening the mounting bolts. Over-tightening can damage the ECU housing.
2

Transmission Control Unit (TCU) Mounting Bolt

M5 x 0.8
Torque Specification
7 ft-lbs (9.5 N·m)
Important Notes
Ensure proper alignment of the TCU before tightening bolts to specified torque.
3

Body Control Module (BCM) Mounting Bolt

M5 x 0.8
Torque Specification
7 ft-lbs (9.5 N·m)
Important Notes
Ensure the BCM is flush to the mounting surface before tightening. Over-tightening can damage plastic housings or tabs on the module.

Ground Connections

1

Chassis to Engine Ground Strap Bolt/Nut

M8 x 1.25
Torque Specification
20 ft-lbs (27 N·m)
Important Notes
Ensure the ground strap is securely mounted with clean contact surfaces, check ground surfaces are free of paint or corrosion before install.
2

Chassis to Body Ground Strap Bolt/Nut

M6 x 1.0
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Ensure the ground strap is properly secured to a clean contact surface. Ensure there is no corrosion on contact surfaces prior to install.

Emissions Sensors

Torque specifications for Emissions_sensors

Exhaust Manifold

1

Exhaust Manifold to Cylinder Head Bolts

M8 x 1.25
Torque Specification
20 ft-lbs (27 N·m)
Important Notes
Tighten bolts in a criss-cross pattern from the center outwards. Ensure mating surfaces are clean and free of debris.
2

Exhaust Pipe to Exhaust Manifold/Headers Bolts

M10 x 1.5
Torque Specification
20 ft-lbs (27 N·m)
Important Notes
Ensure proper alignment of the exhaust pipe to the manifold before tightening. Use new gaskets if necessary.
3

Catalytic Converter to Exhaust Pipe Bolts

M10 x 1.5
Torque Specification
20 ft-lbs (27 N·m)
Important Notes
Ensure proper alignment and use new gaskets or sealing rings where applicable. Verify correct bolt grade.

Egr System

1

EGR Valve Bolts

M6 x 1.0
Torque Specification
10 ft-lbs (14 N·m)
Important Notes
Ensure the EGR valve mating surfaces are clean. Be careful not to overtighten.

Oxygen Sensors

1

Upstream Oxygen Sensor (Pre-Cat)

M18 x 1.5
Torque Specification
30 ft-lbs (40 N·m)
Important Notes
Apply a small amount of high-temp anti-seize compound to the sensor threads if required, following manufacturer's recommendation. Do not overtighten.
2

Downstream Oxygen Sensor (Post-Cat)

M18 x 1.5
Torque Specification
30 ft-lbs (40 N·m)
Important Notes
Apply a small amount of high-temp anti-seize compound to the sensor threads if required, following manufacturer's recommendation. Do not overtighten.

Exhaust Gas Temp Sensors

1

Exhaust Gas Temperature (EGT) Sensor

M14 x 1.5
Torque Specification
17 ft-lbs (23 N·m)
Important Notes
Tighten to the specified torque and use a new gasket if applicable, ensuring not to overtighten or cause damage to the threads. This value is an estimate.

Nox Sensors

1

Nitrogen Oxides (NOx) Sensor Mounting Bolt

M6 x 1.0
Torque Specification
10 ft-lbs (14 N·m)
Important Notes
Tighten the bolts carefully and evenly to the specified torque, do not over tighten.

Intake System

1

Mass Air Flow (MAF) Sensor Bolts

M5 x 0.8
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Be careful not to overtighten these bolts, which could damage the sensor housing.
2

Fuel Tank Vent Valve/Solenoid Bolts

M6 x 1.0
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Ensure the mounting surface is clean and free of any debris. Do not over tighten.

Exhaust

Torque specifications for Exhaust

Exhaust Manifold

1

Exhaust Manifold/Header to Cylinder Head Bolts

M8 x 1.25
Torque Specification
20 ft-lbs (27 N·m)
Important Notes
Ensure the gasket is properly aligned before tightening. Use a criss-cross pattern for even torque distribution.

Exhaust Downpipe

1

Exhaust Pipe to Exhaust Manifold/Header Bolts

M10 x 1.5
Torque Specification
20 ft-lbs (27 N·m)
Important Notes
Ensure the gasket is properly aligned before tightening. Use a criss-cross pattern for even torque distribution.
2

Downpipe to Catalytic Converter Flange Bolts

M10 x 1.5
Torque Specification
32 ft-lbs (43 N·m)
Important Notes
Estimated value. Always check the vehicle-specific service manual. Use a new gasket for a proper seal.

Catalytic Converter

1

Catalytic Converter to Exhaust Pipe Bolts

M10 x 1.5
Torque Specification
20 ft-lbs (27 N·m)
Important Notes
Ensure the gasket is properly aligned before tightening. Use a criss-cross pattern for even torque distribution.

Intermediate Pipe

1

Intermediate Pipe Flange Bolts

M10 x 1.5
Torque Specification
28 ft-lbs (38 N·m)
Important Notes
Estimated value. Always check the vehicle-specific service manual. Use a new gasket for a proper seal.

Muffler

1

Muffler to Exhaust Pipe Bolts

M10 x 1.5
Torque Specification
30 ft-lbs (41 N·m)
Important Notes
Ensure the gasket is properly aligned before tightening. Use a criss-cross pattern for even torque distribution.

Support Brackets

1

Exhaust System Support Bracket Bolts

M8 x 1.25
Torque Specification
23 ft-lbs (31 N·m)
Important Notes
Estimated value. Torque may vary depending on the bracket type and chassis location. Use a thread locker for added security.

Fuel

Torque specifications for Fuel

Fuel Rail

1

Fuel Rail Mounting Bolts

M6 x 1.0
Torque Specification
6 ft-lbs (8 N·m)
Important Notes
Ensure proper seating of the fuel rail before tightening. Tighten bolts evenly.
2

Fuel Injector Mounting Bolts/Screws

M5 x 0.8
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Ensure injector O-rings are properly lubricated before installation. Tighten evenly to prevent leaks.

Fuel Delivery

1

Fuel Pump Mounting Bolts

M8 x 1.25
Torque Specification
25 ft-lbs (34 N·m)
Important Notes
Tighten in a cross pattern for even distribution. Ensure the pump assembly is properly aligned.
2

Fuel Tank Strap Bolts

M10 x 1.5
Torque Specification
20 ft-lbs (27 N·m)
Important Notes
Tighten the straps evenly, and double check that the tank is fully supported after tightening.
3

Fuel Filter Mounting Bolt/Nut

M8 x 1.25
Torque Specification
22 ft-lbs (30 N·m)
Important Notes
Ensure proper seating and alignment of the fuel filter before tightening.

Fuel Filler

1

Fuel Filler Neck Bolts

M6 x 1.0
Torque Specification
10 ft-lbs (14 N·m)
Important Notes
Tighten evenly to ensure a secure and leak-free seal. Avoid over-tightening which may distort the neck.

Fuel Sensors

1

Fuel Pressure Sensor Mounting Bolts/Screws

M4 x 0.7
Torque Specification
7 ft-lbs (9.5 N·m)
Important Notes
Estimated value. Use care when tightening, as these small bolts can be easily stripped. Always verify the specific sensor manufacturer’s specs.
2

Fuel Level Sending Unit Bolts/Screws

M5 x 0.8
Torque Specification
6 ft-lbs (8 N·m)
Important Notes
Estimated value. Tighten the screws evenly to prevent leaks, and do not over-tighten to prevent damage.

Evap System

1

EVAP Canister Mounting Bolts

M6 x 1.0
Torque Specification
10 ft-lbs (14 N·m)
Important Notes
Estimated value. Ensure that the canister is seated properly before tightening to prevent damage.

Hvac

Torque specifications for Hvac

Ac Compressor

1

A/C Compressor Mounting Bolts

M10 x 1.5
Torque Specification
30 ft-lbs (41 N·m)
Important Notes
Ensure bolts are clean and lubricated with a light oil before installation. Torque to specification in a single step.

Ac Lines And Fittings

1

A/C Line Fittings

Varies, generally M14 x 1.5
Torque Specification
20 ft-lbs (27 N·m)
Important Notes
Use a line wrench to prevent rounding the fitting. Always use new O-rings or seals. Do not overtighten.

Evaporator Core

1

Evaporator Core Housing Bolts

M5 x 0.8
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Estimated value. Avoid overtightening, as the housing is often plastic and can be easily cracked. Consider hand-tightening plus a quarter turn.

Condenser

1

Condenser Mounting Bolts

M6 x 1.0
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Ensure bolts are clean and properly threaded. Torque to specification in a single pass.

Receiver Drier

1

Receiver Drier Mounting Bolts

M6 x 1.0
Torque Specification
8 ft-lbs (11 N·m)
Important Notes
Ensure bolts are clean and lubricated with a light oil before installation. Torque to specification in a single step.

Blend Door Actuator

1

HVAC Blend Door Actuator Mounting Bolts

M4 x 0.7
Torque Specification
6 ft-lbs (8 N·m)
Important Notes
Estimated value. These are often plastic housings so avoid over tightening. Torque to specification in a single pass.

Blower Motor

1

Blower Motor Mounting Bolts

M5 x 0.8
Torque Specification
6 ft-lbs (8 N·m)
Important Notes
Estimated value. The blower motor housing is typically plastic, therefore avoid overtightening. Torque to specification in a single pass.

Refrigerant Pressure Sensor

1

Refrigerant Pressure Sensor

Varies, generally M10 x 1.0
Torque Specification
2 ft-lbs (3 N·m)
Important Notes
Estimated value, often hand-tightened plus a 1/8 turn. Do not overtighten; this can damage threads or the sensor. This value is an estimate and may be considered a 'snug' torque.

Suspension

Torque specifications for Suspension

Front Suspension

1

Strut/Shock Absorber Upper Mounting Bolts

M10 x 1.5
Torque Specification
50 ft-lbs (68 N·m)
Important Notes
Secures the top of the strut assembly to the vehicle chassis. Ensure the strut is properly aligned before tightening.
2

Strut/Shock Absorber Lower Pinch Bolt(s)

M14 x 1.5
Torque Specification
1. 59 ft-lbs (80 N·m) 2. 90°
Important Notes
These pinch bolts secure the strut to the wheel knuckle. The torque plus angle ensures proper clamping force. This is an estimated value; verify in your manual.
3

Control Arm Bolts (Frame Side)

M14 x 1.5
Torque Specification
70 ft-lbs (95 N·m)
Important Notes
Fastens the control arm to the vehicle's frame or subframe. Tighten with the vehicle at ride height if possible.
4

Control Arm Bolts (Knuckle Side)

M14 x 1.5
Torque Specification
70 ft-lbs (95 N·m)
Important Notes
Fastens the control arm to the wheel knuckle. Tighten with the vehicle at ride height if possible.
5

Ball Joint Nut

M12 x 1.25
Torque Specification
55 ft-lbs (75 N·m)
Important Notes
Secures the ball joint stud to the suspension knuckle or control arm. Ensure the ball joint is properly seated before tightening.
6

Tie Rod End Nut

M12 x 1.5
Torque Specification
40 ft-lbs (54 N·m)
Important Notes
Secures the tie rod end to the steering knuckle or arm. Ensure the tie rod is aligned and the nut is correctly threaded.
7

Sway Bar Link Nut

M10 x 1.25
Torque Specification
35 ft-lbs (47 N·m)
Important Notes
Secures the sway bar link to the sway bar and strut/control arm. Use a wrench to hold the stud and tighten the nut. Do not over-torque to prevent damage to sway bar link.

Rear Suspension

1

Rear Suspension Lower Control Arm Inner Bolt

M14 x 1.5
Torque Specification
1. 77 ft-lbs (105 N·m) 2. 90°
Important Notes
Secures the inner end of the lower control arm to the chassis. Torque plus angle is critical for proper clamping force. This is an estimated value; verify in your manual.
2

Rear Suspension Upper Control Arm Inner Bolt

M12 x 1.5
Torque Specification
1. 70 ft-lbs (95 N·m) 2. 90°
Important Notes
Attaches the upper control arm to the body or subframe. Use torque plus angle for proper clamping force. This is an estimated value; verify in your manual.
3

Rear Suspension Upper Control Arm Outer Bolt

M12 x 1.5
Torque Specification
1. 70 ft-lbs (95 N·m) 2. 90°
Important Notes
Attaches the upper control arm to the knuckle. Use torque plus angle for proper clamping force. This is an estimated value; verify in your manual.

Subframe Mounts

1

Front Subframe Mounting Bolts

M14 x 2.0
Torque Specification
1. 74 ft-lbs (100 N·m) 2. 90°
Important Notes
Fastens the front subframe to the chassis. Use torque plus angle for proper clamping force. This is an estimated value; verify in your manual.
2

Rear Subframe Mounting Bolts

M14 x 2.0
Torque Specification
1. 81 ft-lbs (110 N·m) 2. 90°
Important Notes
Fastens the rear subframe to the chassis. Use torque plus angle for proper clamping force. This is an estimated value; verify in your manual.

Sway Bar

1

Sway Bar Mounting Bracket Bolts

M8 x 1.25
Torque Specification
22 ft-lbs (30 N·m)
Important Notes
Secures the sway bar to the vehicle's frame or subframe. Do not overtighten to prevent damage to brackets.

Troubleshooting Guide

Common issues, diagnostic steps, and prevention guidelines

Common Issues

Bolt stretching, stripped threads, uneven torque patterns

Loose Components

Symptoms:
  • Rattling or vibration noises
  • Visible movement in components
  • Uneven panel gaps
Solutions:
  • Clean threads and mounting surfaces
  • Replace damaged fasteners
  • Apply proper torque in sequence
  • Use thread locker if specified

Stripped Fasteners

Symptoms:
  • Unable to achieve proper torque
  • Fastener spins freely
  • Visible thread damage
Solutions:
  • Use thread repair kit if appropriate
  • Install thread insert (HeliCoil)
  • Replace component if threaded hole is damaged
  • Upgrade to higher grade fastener if recommended

Overtightened Components

Symptoms:
  • Cracked or deformed parts
  • Broken fasteners
  • Compressed gaskets or seals
Solutions:
  • Replace damaged components
  • Use new fasteners
  • Follow proper torque sequence
  • Verify correct torque specifications

Diagnostic Steps

Visual inspection, torque verification, thread assessment

1

Visual Inspection

Inspect the affected area for any visible signs of damage or wear

  • Check for cracks or deformation
  • Look for signs of excessive wear
  • Verify proper fastener installation
2

Torque Verification

Verify the torque applied to the fasteners

  • Check the torque wrench calibration
  • Verify the torque specification
  • Compare the applied torque to the specification
3

Thread Assessment

Assess the condition of the threads

  • Check for signs of thread damage
  • Verify the thread type and size
  • Check for proper thread engagement

Prevention Guidelines

Best practices, maintenance tips, tool care

Best Practices

  • Always follow the recommended torque specification
  • Use the correct type and size of fasteners
  • Verify the torque wrench calibration regularly

Maintenance Tips

  • Regularly inspect the affected area for signs of wear or damage
  • Replace damaged or worn-out components promptly
  • Keep the work area clean and organized

Tool Care

  • Regularly clean and maintain the torque wrench
  • Store the torque wrench in a dry and secure location
  • Verify the torque wrench calibration before each use

Frequently Asked Questions

Find answers to common questions about torque specifications

Q1

What IS the torque specification for the engine oil drain plug on a 2016-Present BMW 740i?

The torque specification for the engine oil drain plug IS 25 Nm (18 ft-lbs).

Q2

What type of torque wrench IS recommended for tightening critical bolts on a 2016-Present BMW 740i?

A calibrated, click-type torque wrench IS recommended for tightening critical bolts. This type of wrench will provide an audible click when the desired torque value IS reached.

Q3

Can I use a standard socket wrench to tighten bolts on a 2016-Present BMW 740i?

Using a standard socket wrench to tighten bolts IS not recommended. It IS possible to over-tighten bolts with a standard wrench, which can damage the threads or the bolt itself.

Q4

What IS the torque sequence for the cylinder head bolts on a 2016-Present BMW 740i?

The cylinder head bolts must be tightened in the following sequence: 1. Tighten the bolts in a criss-cross pattern to 30 Nm (22 ft-lbs). 2. Tighten the bolts in a criss-cross pattern to 60 Nm (44 ft-lbs). 3. Tighten the bolts in a criss-cross pattern to 90 Nm (66 ft-lbs) plus an additional 90 degrees.

Q5

What IS the proper torque specification for the lug nuts on a 2016-Present BMW 740i?

The torque specification for the lug nuts IS 110 Nm (81 ft-lbs).

Q6

How often should I have the torque on critical bolts checked on my 2016-Present BMW 740i?

It IS recommended to have the torque on critical bolts checked every 30,000 miles or 24 months, whichever comes first.

Environmental Considerations

Temperature, humidity, and seasonal effects on torque specifications

Temperature Effects

Includes: High Heat, Cold Weather, Thermal Cycling

Temperature can significantly impact torque values and fastener behavior

Cold Weather

Effects:
  • Increased material brittleness
  • Higher torque required due to thread contraction
  • Reduced thread lubricant effectiveness
Recommendations:
  • Allow components to warm to room temperature when possible
  • Consider using winter-grade thread lubricants
  • Check torque values more frequently during winter months

Hot Weather

Effects:
  • Thermal expansion of components
  • Decreased friction in threads
  • Accelerated lubricant breakdown
Recommendations:
  • Check torque when components are at normal operating temperature
  • Use temperature-resistant thread lockers
  • Consider re-torquing after heat cycles

Humidity and Corrosion

Covers: Rust Prevention, Salt Exposure, Moisture Control

Moisture and corrosion can affect fastener integrity and torque values

High Humidity

Effects:
  • Accelerated corrosion formation
  • Reduced friction coefficient
  • Potential thread seizing
Prevention:
  • Use corrosion-resistant fasteners
  • Apply appropriate anti-seize compounds
  • Maintain proper protective coatings

Salt Exposure

Effects:
  • Rapid corrosion development
  • Thread damage
  • Seized fasteners
Prevention:
  • Regular underbody washing
  • Use of sacrificial anodes where appropriate
  • Application of protective coatings

Seasonal Maintenance

Spring, Summer, Fall, and Winter maintenance schedules

Spring

  • Inspect for winter damage
  • Clean and protect exposed fasteners
  • Check torque on critical components

Summer

  • Monitor heat-affected components
  • Check expansion-related loosening
  • Inspect cooling system mounts

Fall

  • Prepare for winter conditions
  • Apply corrosion protection
  • Verify all fasteners are properly torqued

Winter

  • More frequent inspection of critical fasteners
  • Check for salt damage
  • Monitor suspension component torque

Related Resources

Tools, service procedures, and technical bulletins

Recommended Tools

1/4-inch Drive Digital Torque Wrench Set (2-20 Nm)

The 1/4-inch drive IS designed for lower torque applications and can be ideal for basic maintenance and repairs on the 740i.

  • Small and compact for easy use in tight spaces
  • Magnetic attachment system for secure socket retention
  • Angled head for improved accessibility
  • Backlit display for readability
Learn more

3/8-inch Drive Torque Wrench (20-200 Nm)

For handling a range of torque values, the 3/8-inch drive wrench IS useful for various applications, including wheel installations and suspension components.

  • Durable construction with forged steel construction
  • Ratcheting mechanism for efficient tightening
  • Adjustable torque range with easy-to-read scale
  • Knurled handle for a secure grip
Learn more
Service Procedures

BMW 740i Spark Plug Replacement

Step-by-step instructions on replacing spark plugs in a 2016-Present BMW 740i, including torque specifications for the spark plugs.

  • Safety precautions and necessary tools
  • Access and removal of engine cover
  • Identification and removal of faulty spark plugs
  • Installation of new spark plugs with the specified torque
  • Reconnection of components and final checks
View full procedure

BMW 740i Brake Pad Replacement

Technical procedure for replacing brake pads on the 740i, highlighting proper tightening techniques and torque specifications.

  • Safety measures and vehicle preparation
  • Removal of wheels and brake calipers
  • Inspection and replacement of worn brake pads
  • Cleaning and lubrication of brake components
  • Reinstallation of calipers and wheels, torqued to the specified values
View full procedure
Technical Service Bulletins

Technical Service Bulletin: Incorrect Torque Specifications for Engine Mounting Bolts

2017-06-01

BMW-issued bulletin addressing incorrect torque specifications for engine mounting bolts on certain 2016-2017 740i models.

2016-2017 740i xDrive

Resolution: Updated torque specifications and guidelines for proper engine mounting bolt tightening

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Technical Information
  • All specifications, including torque values, fluid capacities, and maintenance procedures, should be verified against your vehicle's factory service manual.
  • Vehicle specifications and procedures may vary by model year, trim level, and region.
  • Always follow the manufacturer's recommended procedures and safety precautions.
  • Working on vehicles can be dangerous. Always take proper safety precautions and use appropriate safety equipment.
  • If you're unsure about any procedure, consult a qualified professional mechanic.
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About the Author

Expert automotive knowledge and experience

Alan Montanye - Automotive Technical Specialist
ASE

Alan Montanye

Automotive Technical Specialist

ASE Master Certified Technician with over a decade of hands-on experience in automotive repair and diagnostics.

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