Audi S1 8X 2.0 TFSI CWZA Quattro Rear Axle Differential PQX 0BR525010J WARRANTY

Listing details

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

Audi S1 8X 2.0 TFSI CWZA Quattro Rear Axle Differential PQX is an original drivetrain component from the Differentials category, designed for rear-axle operation in the quattro all-wheel-drive system. This solution is engineered for precise torque transfer and stable vehicle handling during dynamic driving. Thanks to its factory design, it ensures perfect compatibility with other Audi drivetrain components.

Specifications and technical data

• SKU: 0BR525010J
• Mark: Audi
• Condition: Used
• OEM Part Number: 0BR525010J
• Substitutable numbers: 0BR525010J, 0BR 525 010 J
• Location on the vehicle: Rear
• Category: Differentials

Purpose and function in the drivetrain

The presented rear differential is responsible for distributing torque to the rear wheels in Audi vehicles equipped with the quattro system. Its location, defined as Rear, means the axle unit operates directly in the rear part of the drivetrain, working in conjunction with the driveshaft and half-shafts.

In combination with the 2.0 TFSI CWZA engine and all-wheel drive, the differential provides:

• stable power transfer to the rear axle,
• traction control during acceleration,
• smooth compensation of wheel speed differences during cornering.

Benefits of using an original Audi differential

Choosing an original Audi differential from this product group primarily ensures precise structural fitment for the specific S1 8X model version. The component maintains factory operating parameters, which is particularly important in sports-oriented vehicles where the drivetrain is subjected to higher loads.

Key advantages include:

• maintaining the handling characteristics intended by the manufacturer,
• compatibility with the factory quattro system,
• reducing the risk of incorrect gear ratios or improper fitment.

As a component in the Differentials category, the rear differential is a vital link in the drivetrain, influencing the system's operational smoothness, noise levels, and the durability of other components.

Condition, origin, and practical application

The offered differential comes from an Audi vehicle and is sold as a used part. Such salvaged components are a popular choice for repairs where maintaining factory specifications while optimizing service costs is key. In the case of drive axles and differentials, it is particularly important to select the correct variant for the specific engine version and drivetrain configuration.

To better understand how to select gear ratios and differential variants for your driving style and vehicle configuration, it is worth checking our guide: Salvaged drive axles and differentials – how to choose gear ratios for your driving style. The article explains the relationships between gear ratios, acceleration characteristics, and driving comfort in daily use.

Selection, compatibility, and installation aspects

Before purchasing a rear differential for an Audi S1 8X, it is recommended to verify compatibility with your specific vehicle, particularly regarding the engine version, drivetrain type, and the axle unit used. Proper fitment translates into:

• correct cooperation with the transmission and vehicle electronics,
• absence of unwanted vibrations and noise in the drivetrain,
• maintaining the performance levels intended by the manufacturer.

The rear differential, as a complete axle unit, is mounted in the rear of the chassis at the connection point with the driveshaft and half-shafts. Proper installation requires following service procedures, correct alignment, and leak checks.

Expanding the Audi drivetrain – related components

If you are planning a comprehensive repair or upgrade of the drivetrain in your Audi and need other elements from the same group, such as additional differentials, axle units, or related drivetrain components, check the available parts in the Audi Differentials category.