BMW 745i 2002-2009

BMW 745i 2002-2009 4.4L Engine Specifications

Explore comprehensive technical specifications and maintenance guidelines for the 4.4L engine in the 2002-2009 BMW 745I models. This page provides detailed insights into engine performance, architecture, and troubleshooting.

Updated Oct 14, 2023

Overview Specifications

Comprehensive description of the 4.4l-engine specifications for the 2002-2009 BMW 745i, including key features, measurements, and technical details

How to Use

Use the search function to locate specific 4.4l-engine specifications by entering keywords such as 'torque', 'displacement', or 'compression ratio'.

Navigate through the documentation sections using the table of contents or by scrolling through the major sections and subsections.

Key Specifications

Displacement

4.4 liters (4398 cc)

Power Output

333 hp (245 kW) at 6100 rpm

Torque

450 Nm (332 lb-ft) at 3600 rpm

Compression Ratio

10.5:1

Oil Capacity

8.5 liters (9 quarts)

Available Specifications

Engine Design and Architecture

Detailed information on the design, layout, and architecture of the 4.4l-engine

Engine Configuration

V8 configuration with 90-degree bank angle
Aluminum alloy block and cylinder heads
Double overhead camshafts (DOHC)
32-valve setup with variable valve timing (VANOS)
Displacement: 4.4 liters (4398 cc)

Cooling and Lubrication

Water-cooled system with electric cooling fan
Oil capacity: 8.5 liters (9 quarts)
Oil pressure: 3.5 bar at 2000 rpm
Thermostat opening temperature: 97°C (206.6°F)
Oil filter type: cartridge-style

Note: Use only BMW-approved engine oil with a viscosity of 5W-30 or 5W-40.

Performance Specifications

Technical details on the engine's performance metrics and output

Power and Torque

Maximum power output: 333 hp (245 kW) at 6100 rpm
Peak torque: 450 Nm (332 lb-ft) at 3600 rpm
Compression ratio: 10.5:1
Redline: 6500 rpm
Fuel system: Sequential fuel injection

Fuel and Emissions

Fuel type: Premium unleaded (91 octane or higher)
Fuel tank capacity: 82 liters (21.6 gallons)
Emissions compliance: Euro 4 standards
Catalytic converter: Dual-stage with oxygen sensors
CO2 emissions: 269 g/km

Note: Regularly check and replace the air filter to maintain optimal fuel efficiency.

Maintenance and Service Intervals

Guidelines for maintaining and servicing the 4.4l-engine

Routine Maintenance

Oil change interval: Every 15,000 km (9,320 miles) or 12 months
Spark plug replacement: Every 60,000 km (37,282 miles)
Timing chain inspection: Every 100,000 km (62,137 miles)
Coolant flush: Every 4 years or 60,000 km (37,282 miles)
Air filter replacement: Every 30,000 km (18,641 miles)

Diagnostic and Troubleshooting

OBD-II compliant with BMW-specific fault codes
Check engine light diagnostics via BMW DIS or INPA software
Common issues: VANOS system wear, oil leaks, and coolant system failures
Recommended diagnostic tools: BMW-specific scan tools
Service reset procedure required after maintenance

Note: Always use genuine BMW parts for replacements to ensure compatibility and performance.

Search Specifications

Search by specification name, value, or description

Engine Specifications

Engine Type

Type: V8

Displacement: 4.4 liters

Configuration: Double overhead camshaft (DOHC)

Performance

Power Output: 330 hp @ 6000 rpm

Torque: 440 Nm @ 4500 rpm

Compression Ratio: 10.5:1

Dimensions

Length: 720 mm

Width: 540 mm

Height: 420 mm

Weight: 240 kg

Fuel System

Fuel Type: Premium unleaded gasoline

injection Type: Direct fuel injection

Fuel Pump Pressure: 3.5 bar

Cooling System

Coolant Type: BMW approved coolant

Coolant Capacity: 8 liters

Thermostat Opening Temp: 85°C

Oil System

Oil Type: Synthetic oil SAE 5W-30

Oil Capacity: 7 liters

Oil Pressure: 2.5 bar @ 2000 rpm

Electrical System

Battery Type: 12V lead-acid

Alternator Output: 140A

Starter Motor Type: High torque direct drive

Emission System

Emission Standard: EURO IV

Catalyst Type: Three-way catalytic converter

Exhaust Pressure: 1.2 bar

Maintenance

Oil Change interval: Every 10000 miles or 12 months

Coolant Change interval: Every 20000 miles or 24 months

Belt Change interval: Every 50000 miles or 60 months

Diagnostics

Error Codes

P0101
P0202
P0303

Diagnostic Tool: BMW proprietary diagnostic software

Sensor Types

Oxygen sensor
Temperature sensor
Pressure sensor

Service Information Service

Detailed service requirements and schedules

10000 miles

12 months

Oil change
Filter change
System diagnostics

Use only BMW approved materials

20000 miles

24 months

Coolant change
Belt inspection
Sensor checks

Ensure all systems are within tolerance

Common Questions

Find answers to common questions about torque specifications

What is the horsepower and torque output of the 4.4L engine in the 2002-2009 BMW 745i?

The 4.4L N62B44 engine in the 2002-2009 BMW 745i produces 333 horsepower at 6100 rpm and 330 lb-ft of torque at 3600 rpm. This V8 engine features Double-VANOS variable valve timing and Valvetronic variable valve lift for optimized performance.

What type of oil and oil capacity does the 4.4L engine require?

The 4.4L engine requires synthetic oil meeting BMW Longlife-01 specifications. The oil capacity is approximately 8.5 liters (9 quarts) with a filter change. Always use the recommended SAE 5W-30 or 5W-40 viscosity for optimal performance.

What is the recommended service interval for the timing chain on the 4.4L engine?

The timing chain on the 4.4L engine is designed to last the lifetime of the engine under normal operating conditions. However, regular inspections are recommended every 60,000 miles to check for wear or stretching, especially if unusual noises or performance issues arise.

What is the compression ratio of the 4.4L engine?

The 4.4L N62B44 engine has a compression ratio of 10.5:1, which contributes to its efficient combustion and power output.

How often should the coolant be replaced in the 4.4L engine?

BMW recommends replacing the coolant every 4 years or 60,000 miles, whichever comes first. Use only BMW-approved coolant mixed with distilled water in a 50:50 ratio to prevent corrosion and maintain optimal engine temperature.

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 N62 Engine Technical Overview

Coming Soon

A detailed technical guide covering the N62 engine family, including the 4.4L variant, with specifications, maintenance tips, and common issues.

BMW 745i Owner's Manual

Coming Soon

The official owner's manual for the 2002-2009 BMW 745i, providing detailed information on engine maintenance, service intervals, and troubleshooting.

BMW Genuine Parts Catalog

Coming Soon

Access the official BMW parts catalog to find genuine components for the 4.4L engine, ensuring compatibility and performance.

BMW Service Bulletins for N62 Engines

Coming Soon

A collection of service bulletins and technical updates specific to the N62 engine family, including the 4.4L variant.

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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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