Audi S3 8V 2.0 TFSI CJXC Quattro Rear Axle Differential Diff 0CQ525010H WARRANTY

Listing details

The differential is sold with a 90-day warranty! It was tested before removal and is in full working order.

The Audi S3 8V 2.0 TFSI CJXC Quattro Rear Differential Axle Rear is a factory-original drivetrain component from the Differentials - Diffs category, designed for installation on the rear axle of a quattro drivetrain. Audi's original design ensures consistency with the factory suspension geometry and drivetrain characteristics, contributing to stable handling and predictable vehicle behavior. This is the ideal solution for users seeking a technically matched rear axle for their S3 8V equipped with the 2.0 TFSI CJXC engine.

Specifications and technical data

• SKU: 0CQ525010H
• Mark: Audi
• Condition: Used
• OEM Part Number: 0CQ525010H
• Substitutable numbers: 0CQ525010H, 0CQ 525 010 H
• Location on the vehicle: Rear
• Category: Differentials

Purpose and Function in the Drivetrain

The rear differential in the Audi S3 8V with quattro drive is responsible for distributing torque to the rear wheels, working in conjunction with other components of the 4x4 system. A correctly selected rear axle:

• maintains the correct gear ratio consistent with the drivetrain configuration of the specific S3 8V unit,
• ensures stable transfer of the 2.0 TFSI CJXC engine's power to the road surface,
• supports the operation of traction and stability control systems,
• minimizes unwanted vibrations and noise in the rear of the vehicle.

By maintaining its factory operating characteristics, the rear differential axle for Audi S3 8V allows for predictable vehicle behavior during both daily driving and dynamic acceleration.

Benefits of Using an Original Audi Differential

Choosing a component sourced from a dismantled original Audi drivetrain offers a range of practical advantages:

• Factory Fitment – maintains compatibility with the suspension and driveshaft design of the Audi S3 8V, eliminating the need for modifications.
• Consistent quattro drivetrain performance – proper integration with the front-wheel drive system and control electronics.
• Economical solution – a used rear axle helps reduce repair costs while maintaining original specifications.
• Ability to restore the vehicle's factory behavior after a failure or wear of the previous differential.

For users who wish to maintain their car in a configuration close to its original state, an original Audi rear differential offers a sensible compromise between cost and quality.

Vehicle Placement and Installation Aspects

This axle operates on the vehicle's rear axle, connecting the driveshafts and the prop shaft. This placement requires precise installation, ensuring alignment and proper tightening of mounting components. When replacing the differential in an Audi S3 8V, it is important to consider:

• the condition of the driveshafts and CV joints working with the rear axle,
• the sealing of connections and the condition of seals,
• selecting the appropriate gear oil in accordance with manufacturer recommendations,
• proper bleeding and checking for any leaks after installation.

Professional installation allows for the full utilization of the quattro system's potential and reduces the risk of premature wear of drivetrain components.

Gear Ratio Selection and Vehicle Configuration Compatibility

When replacing a rear differential in all-wheel-drive vehicles, compatibility of the gear ratio with the rest of the drivetrain is crucial. An incorrectly selected rear axle can lead to improper drivetrain operation, overloads, and errors in electronic systems. To better understand gear ratio selection and compatibility, it is recommended to read the guide article Used Drive Axles and Differentials – How to Select Gear Ratios for Your Driving Style, which discusses practical examples and common user questions.

Other Audi Differentials and Drivetrain Development

If you are considering a broader upgrade of your vehicle's drivetrain or are looking for alternative configurations, explore the available Audi Differentials - Diffs to compare solutions used in different models and generations. This will help you better match components to the desired drivetrain performance and planned modifications.