Description

Audi A4 B5 B5.5 Manual Rear Differential Final Drive 01H500040J 35:9 CKH 1995–2001

Used Audi A4 B5 B5.5 Manual Rear Differential

For sale is a used Audi A4 B5/B5.5 rear differential and final drive, OEM part number 01H500040J, with differential code CKH and a 35:9 final-drive ratio. This rear differential is designed for compatible Audi A4 models equipped with a manual transmission and quattro all-wheel drive.

The rear differential is an important part of the quattro drivetrain, transferring power from the propeller shaft to the rear wheels while providing the required final-drive reduction. This unit can be an ideal replacement for a damaged, worn, or noisy rear differential when the original part number and gear ratio match.

Product Details

• Product: Rear Differential / Final Drive
• OEM Part Number: 01H500040J
• Differential Code: CKH
• Final Drive Ratio: 35:9
• Approximate Ratio: 3.889:1
• Vehicle: Audi A4 B5 / B5.5
• Transmission: Manual
• Drivetrain: quattro AWD
• Model Years: Approximately 1995–2001
• Condition: Used / Pre-Owned
• Application: Rear drivetrain / quattro final drive

Audi A4 Quattro Rear Differential Replacement

The rear differential works together with the transmission, center differential, propeller shaft, and rear axles to deliver power to the rear wheels. Using the correct final-drive ratio is essential for proper quattro drivetrain operation.

The 01H500040J CKH 35:9 rear differential may be suitable for replacing an original unit with the same specifications. Because Audi produced different drivetrain configurations, the differential code, OEM part number, transmission type, and final-drive ratio should all be matched before purchase.

Vehicle Fitment

Potential applications include compatible:

• Audi A4 B5
• Audi A4 B5.5
• Audi A4 8D
• Quattro AWD models
• Manual transmission models
• Approximately 1995–2001

Exact compatibility depends on the vehicle’s drivetrain configuration, transmission, engine, production date, differential code, and final-drive ratio.

Important Fitment Information

Please verify the following before ordering:

• OEM part number: 01H500040J
• Differential code: CKH
• Final-drive ratio: 35:9
• Manual transmission
• quattro drivetrain
• Vehicle model and year
• Rear axle configuration
• Original differential specifications

Do not rely on vehicle model and year alone. Matching the differential code and final-drive ratio is especially important when replacing an Audi quattro rear differential.

Condition

This is a used / pre-owned Audi rear differential. As with any used drivetrain component, it may show normal signs of previous use, including surface marks, oxidation, dirt, or cosmetic wear.

Please inspect the product photographs carefully and compare the casting, identification markings, mounting points, and part number with your original differential before purchasing.

If installing a used differential, it is recommended to inspect the housing, seals, bearings, gears, mounting points, and fluid condition before installation.

Installation & Service

Professional installation is recommended because rear differential replacement requires correct removal, installation, fluid service, and drivetrain inspection.

Before installation:

• Confirm the part number and differential code.
• Verify the 35:9 final-drive ratio.
• Inspect mounting points and housing.
• Check seals and flange areas for damage.
• Inspect related driveshaft and axle components.
• Fill with the correct manufacturer-specified differential oil.
• Check for leaks after installation.
• Road-test the vehicle and listen for abnormal drivetrain noise.