Audi Audi RS4 2005-2008

Audi Audi RS4 2005-2008 Drivetrain Specifications

Detailed technical specifications and documentation for the 2005-2008 Audi RS4 drivetrain system, including the quattro all-wheel drive, differentials, and driveshaft. Essential for technicians and enthusiasts.

Updated Oct 4, 2023

Overview Specifications

Comprehensive description of the drivetrain specifications for the 2005-2008 Audi RS4, including key features, measurements, and technical details. This manual covers the Quattro all-wheel-drive system, transmission, differentials, and related components.

How to Use

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

Navigate through the drivetrain documentation sections using the table of contents or by scrolling through the manual. Each section is labeled with clear headings and subheadings.

Key Specifications

Torque Split

40% front / 60% rear

Transmission Type

6-speed manual

Final Drive Ratio

3.889:1

Clutch Disc Diameter

240 mm (9.45 in)

Torsen Differential Weight

12.5 kg (27.6 lbs)

Available Specifications

Quattro All-Wheel-Drive System

Details about the Quattro all-wheel-drive system, including its configuration, torque distribution, and key components.

System Configuration

Permanent all-wheel-drive system with Torsen T-2 center differential
Default torque split: 40% front / 60% rear
Dynamic torque distribution based on driving conditions
Integrated with Electronic Differential Lock (EDL) and Anti-Slip Regulation (ASR)

Torsen T-2 Differential

Mechanical torque-sensing differential
Maximum torque bias ratio: 2:1 (front to rear)
Weight: 12.5 kg (27.6 lbs)
Lubrication: Synthetic gear oil, 1.2 liters capacity

Note: The Torsen T-2 differential is maintenance-free under normal operating conditions.

6-Speed Manual Transmission

Technical specifications and details about the 6-speed manual transmission used in the 2005-2008 Audi RS4.

Transmission Specifications

Type: 6-speed manual with dual-mass flywheel
Gear ratios: 1st - 3.67:1, 2nd - 2.05:1, 3rd - 1.41:1, 4th - 1.13:1, 5th - 0.92:1, 6th - 0.78:1
Final drive ratio: 3.889:1
Maximum torque capacity: 450 Nm (332 lb-ft)

Clutch System

Single-plate dry clutch with hydraulic actuation
Clutch disc diameter: 240 mm (9.45 in)
Clutch pedal travel: 150 mm (5.91 in)
Fluid type: DOT 4 brake fluid

Note: The clutch system is designed for high-performance driving and requires periodic inspection.

Front and Rear Differentials

Detailed information about the front and rear differentials, including their design and specifications.

Front Differential

Type: Open differential with EDL
Gear ratio: 3.889:1
Weight: 18.5 kg (40.8 lbs)
Lubrication: Synthetic gear oil, 1.5 liters capacity

Rear Differential

Type: Open differential with EDL
Gear ratio: 3.889:1
Weight: 20.3 kg (44.8 lbs)
Lubrication: Synthetic gear oil, 1.7 liters capacity

Note: Both front and rear differentials are sealed units and require no regular maintenance.

Driveshafts and Axles

Specifications and details about the driveshafts and axles used in the Audi RS4 drivetrain.

Driveshafts

Material: High-strength steel with CV joints
Length: Front - 720 mm (28.35 in), Rear - 680 mm (26.77 in)
Maximum operating angle: 25 degrees
Lubrication: High-temperature grease

Axles

Type: Solid half-shafts with CV joints
Diameter: 32 mm (1.26 in)
Spline count: 28
Lubrication: High-temperature grease

Note: Regular inspection of CV joint boots is recommended to prevent grease leakage.

Search Specifications

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Component Specifications

Engine

Type: 4.2L V8 FSI

Displacement: 4163 cc

Compression Ratio: 12.5:1

Max Power: 420 hp @ 7800 rpm

Max Torque: 317 lb-ft @ 5500 rpm

Redline: 8250 rpm

Part Number: 07L100031Q

Transmission

Type: 6-speed manual

Gear Ratios: 1st: 3.667:1
2nd: 2.050:1
3rd: 1.462:1
4th: 1.133:1
5th: 0.919:1
6th: 0.778:1
Reverse: 3.333:1

Final Drive Ratio: 4.111:1

Part Number: 0A3121001A

Clutch

Type: Single dry plate with diaphragm spring

Diameter: 240 mm

Material: Organic friction material

Part Number: 07L141025D

Driveshaft

Type: Two-piece with center support bearing

Material: High-strength steel

Length: Front: 850 mm, Rear: 920 mm

Part Number: 8E0521101A

Differential

Type: Torsen T-3 center differential

Torque Split: 40:60 front to rear

Locking Mechanism: Mechanical torque sensing

Part Number: 0A3427101B

Axles

Front Axle: Type: Independent double wishbone
Cv Joint Diameter: 108 mm
Part Number: 8E0407271A

Rear Axle: Type: Independent double wishbone
Cv Joint Diameter: 112 mm
Part Number: 8E0407272A

Transfer Case

Type: Integrated with transmission

Lubrication: Synthetic gear oil

Oil Capacity: 1.2 liters

Part Number: 0A3427101B

Propeller Shaft

Type: Two-piece with center support bearing

Material: High-strength steel

Length: Front: 850 mm, Rear: 920 mm

Part Number: 8E0521101A

Wheel Bearings

Front: Type: Sealed roller bearing
Outer Diameter: 72 mm
Part Number: 8E0498625A

Rear: Type: Sealed roller bearing
Outer Diameter: 75 mm
Part Number: 8E0498626A

Lubrication

Engine Oil: Type: Synthetic 5W-40
Capacity: 9.3 liters
Change interval: 10000 miles or 12 months

Transmission Oil: Type: Synthetic 75W-90
Capacity: 3.2 liters
Change interval: 60000 miles or 60 months

Differential Oil: Type: Synthetic 75W-90
Capacity: 1.2 liters
Change interval: 60000 miles or 60 months

Service Information Service

Detailed service requirements and schedules for the 2005-2008 Audi RS4 drivetrain

10000

Engine oil and filter change
Inspect drivetrain components for wear
Check transmission and differential oil levels

Use only Audi-approved synthetic oils

60000

Replace transmission oil
Replace differential oil
Inspect and replace worn drivetrain components

Ensure all seals and gaskets are replaced during fluid changes

Frequently Asked Questions

Find answers to common questions about torque specifications

What is the engine type and horsepower in the 2005-2008 Audi RS4 drivetrain?

The 2005-2008 Audi RS4 is equipped with a 4.2L V8 engine, producing approximately 420 horsepower at 6800 rpm. The engine features direct fuel injection and a dual-stage turbocharger for enhanced performance.

What is the torque specification for the Audi RS4 drivetrain?

The drivetrain delivers a maximum torque of 430 Nm at 4500 rpm. This torque is optimized for high-speed stability and acceleration performance.

What type of transmission is used in the Audi RS4 drivetrain?

The Audi RS4 utilizes a 6-speed manual transmission with an optional 7-speed automatic transmission. The manual transmission features a sport-oriented gear ratio for enhanced driving dynamics.

What is the drivetrain layout in the Audi RS4?

The drivetrain employs a Quattro all-wheel-drive (AWD) system, distributing power to all four wheels for superior traction and stability. The system includes a central differential with electronic control for optimal torque distribution.

What are the drivetrain maintenance intervals for the Audi RS4?

Regular maintenance includes oil changes every 10,000 kilometers, transmission fluid checks every 20,000 kilometers, and differential inspections every 30,000 kilometers. Detailed schedules are specified in the official service manual.

How does the Audi RS4 drivetrain handle cold weather performance?

The drivetrain is designed with cold-weather adaptations, including a heated oil system and low-temperature lubricants, ensuring optimal performance in temperatures as low as -20°C.

Factory Service Resources

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

Official Audi RS4 Drivetrain Service Manual

Coming Soon

Access the complete service manual for detailed technical specifications, maintenance procedures, and troubleshooting guidelines specific to the Audi RS4 drivetrain.

Audi RS4 Drivetrain Maintenance Checklist

Coming Soon

Download a comprehensive checklist for routine drivetrain maintenance, including oil changes, fluid checks, and differential inspections.

Audi RS4 Drivetrain Performance Tuning Guide

Coming Soon

Explore advanced tuning options for the Audi RS4 drivetrain, including transmission calibration, torque optimization, and cold-weather adaptations.

Audi RS4 Drivetrain Warranty Information

Coming Soon

Review the official warranty terms and conditions for the Audi RS4 drivetrain, including coverage details and service requirements.

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