BMW 750i 2001-2008

BMW 750i 2001-2008 Drivetrain Specifications

Detailed technical specifications and documentation for the drivetrain system of the 2001-2008 BMW 750i, including engine, transmission, driveshaft, and differential components. Ideal for technicians and enthusiasts.

Updated Oct 24, 2023

Overview Specifications

Comprehensive description of the drivetrain specifications for the 2001-2008 BMW 750i, including key features, measurements, and technical details

How to Use

Use the search function to locate specific drivetrain components or specifications by entering keywords such as 'transmission', 'differential', or 'driveshaft'.

Navigate through the drivetrain documentation by selecting the relevant section from the table of contents or using the sidebar menu for quick access to subsections.

Key Specifications

Engine Displacement

4.8L

Transmission Type

6-speed automatic

Final Drive Ratio

3.15:1

Driveshaft Length

1,450 mm

Coolant Capacity

12 liters

Available Specifications

Engine and Transmission

Details about the engine and transmission system, including specifications and technical data

Engine Specifications

4.8L V8 engine with dual VANOS variable valve timing
Power output: 360 hp at 6300 rpm
Torque: 360 lb-ft at 3400 rpm
Compression ratio: 10.5:1
Fuel delivery: Direct injection

Transmission System

6-speed automatic transmission with Steptronic manual mode
Gear ratios: 1st (4.17:1), 2nd (2.34:1), 3rd (1.52:1), 4th (1.14:1), 5th (0.87:1), 6th (0.69:1)
Final drive ratio: 3.15:1
Transmission fluid capacity: 9.5 liters

Note: The Steptronic system allows for manual gear shifts via the gear selector or steering wheel-mounted paddles.

Driveshaft and Differential

Technical details about the driveshaft and differential components

Driveshaft Specifications

Two-piece aluminum driveshaft for reduced weight
Length: 1,450 mm
Diameter: 80 mm
Balanced for high-speed operation up to 250 km/h

Differential System

Limited-slip differential with 40% lockup
Differential ratio: 3.15:1
Oil capacity: 1.2 liters
Differential housing material: Cast aluminum

Note: The limited-slip differential enhances traction during cornering and on slippery surfaces.

Axles and Suspension

Information about the axles and suspension components related to the drivetrain

Front Axle

Double-wishbone front suspension
Axle load capacity: 1,200 kg
Wheel hub material: Forged steel
Front track width: 1,580 mm

Rear Axle

Integral V multi-link rear suspension
Axle load capacity: 1,300 kg
Rear track width: 1,585 mm
Wheel hub material: Forged steel

Note: The rear suspension system is designed to optimize handling and ride comfort.

Cooling and Lubrication

Details about the cooling and lubrication systems for the drivetrain

Cooling System

Radiator capacity: 12 liters
Coolant type: BMW-approved ethylene glycol-based coolant
Coolant operating temperature: 90-105°C
Electric cooling fan with variable speed control

Lubrication System

Engine oil capacity: 8.5 liters
Oil type: BMW LL-01 approved synthetic oil
Oil pressure: 3.5-4.5 bar at operating temperature
Oil filter type: Cartridge-style with replaceable element

Note: Regular oil changes are recommended every 15,000 km or 12 months, whichever comes first.

Search Specifications

Search by specification name, value, or description

Component Specifications

Engine

Type: V8

Displacement: 4.8L

Horsepower: 360 hp @ 6300 rpm

Torque: 361 lb-ft @ 3400 rpm

Compression Ratio: 10.5:1

Fuel System: Direct Injection

Part Number: 11007838375

Transmission

Type: 6-speed automatic

Model: GA6HP26Z

Gear Ratios: 1st: 4.17:1
2nd: 2.34:1
3rd: 1.52:1
4th: 1.14:1
5th: 0.87:1
6th: 0.69:1
Reverse: 3.40:1

Fluid Capacity: 9.5 liters

Fluid Type: BMW ATF-1

Part Number: 24007580163

Transfer Case

Type: Electronic All-Wheel Drive (xDrive)

Ratio: 2.81:1

Fluid Capacity: 1.2 liters

Fluid Type: BMW TF-0870

Part Number: 27107566194

Differential

Front: Type: Open Differential
Ratio: 3.15:1
Fluid Capacity: 1.1 liters
Fluid Type: BMW SAF-XO
Part Number: 33107566192

Rear: Type: Limited Slip Differential
Ratio: 3.15:1
Fluid Capacity: 1.3 liters
Fluid Type: BMW SAF-XO
Part Number: 33107566193

Driveshaft

Material: Aluminum

Length: 1.5 meters

Diameter: 80 mm

Part Number: 26107566191

Axles

Front: Type: CV Joint
Spline Count: 32
Part Number: 31207566190

Rear: Type: CV Joint
Spline Count: 32
Part Number: 31207566191

Clutch

Type: Torque Converter

Diameter: 280 mm

Material: Ceramic

Part Number: 21507566189

Propeller Shaft

Material: Steel

Length: 1.2 meters

Diameter: 70 mm

Part Number: 26107566188

Mounts

Engine: Type: Hydraulic
Part Number: 22117566187

Transmission: Type: Hydraulic
Part Number: 22117566186

Operational Parameters

Max Engine Rpm: 7000 rpm

Max Transmission Temp: 120°C

Max Torque: 361 lb-ft

Max Speed: 155 mph (electronically limited)

Service Information Service

Detailed service requirements and schedules for the drivetrain system

30000

Inspect and replace transmission fluid if necessary
Check differential fluid levels
Inspect driveshaft and propeller shaft for wear
Check engine and transmission mounts

Use only BMW-approved fluids and parts

60000

Replace transmission fluid and filter
Replace differential fluid
Inspect and replace CV joints if necessary
Check and replace torque converter if necessary

Ensure all components are torqued to manufacturer specifications

Frequently Asked Questions

Find answers to common questions about torque specifications

What type of drivetrain does the 2001-2008 BMW 750i use?

The 2001-2008 BMW 750i features a rear-wheel-drive (RWD) system with a 6-speed automatic transmission (6HP26). It is equipped with a V8 engine (N62B44) producing 360 horsepower and 360 lb-ft of torque, paired with a fully synchronized drivetrain for optimal performance.

What is the recommended service interval for the transmission fluid in the 750i?

BMW recommends changing the transmission fluid and filter every 60,000 to 100,000 miles, depending on driving conditions. Use only BMW-approved ATF (Automatic Transmission Fluid) such as Shell LA2634 or equivalent to ensure proper lubrication and performance.

How do I identify if the driveshaft or differential needs servicing?

Common signs of drivetrain issues include unusual noises (e.g., clunking or whining), vibrations during acceleration, or fluid leaks from the differential. Inspect the driveshaft center support bearing, universal joints, and differential seals for wear or damage. Differential fluid should be replaced every 50,000 miles using BMW-approved SAE 75W-90 synthetic gear oil.

What is the torque specification for the driveshaft bolts?

The driveshaft bolts on the 2001-2008 BMW 750i should be torqued to 81 Nm (60 lb-ft) during installation. Ensure proper alignment of the driveshaft to avoid vibrations and premature wear.

Can the 750i drivetrain support aftermarket performance upgrades?

While the N62B44 engine and 6HP26 transmission are robust, any performance upgrades (e.g., increased horsepower or torque) should be carefully evaluated. Excessive power can strain the drivetrain components, including the driveshaft, differential, and transmission. Always consult a BMW-certified technician before making modifications.

Factory Service Resources

Access official service manuals, technical documents, and repair guides. These resources provide detailed procedures, specifications, and diagrams directly from the manufacturer.

BMW 750i Drivetrain Maintenance Guide

Coming Soon

A detailed guide covering routine maintenance procedures for the drivetrain, including fluid changes, inspections, and torque specifications.

Transmission Fluid Replacement Procedure

Coming Soon

Step-by-step instructions for replacing the transmission fluid and filter in the 6HP26 automatic transmission, including safety precautions and required tools.

Differential Service and Repair Manual

Coming Soon

Comprehensive manual for servicing the rear differential, including fluid replacement, seal repairs, and troubleshooting common issues.

Driveshaft Inspection and Alignment Guide

Coming Soon

A technical guide for inspecting, aligning, and replacing the driveshaft components to ensure smooth operation and prevent vibrations.

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