Audi Q5 FY 80A DAXB Quattro Rear Axle Differential 53:10 TJN 0B0500043K WARRANTY

Listing details

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

Audi Q5 FY 80A DAXB Quattro Rear Axle Differential 53:10 TJN is an original drivetrain component from the Differentials category, designed for rear axle installation in Audi vehicles equipped with quattro all-wheel drive. This solution ensures proper torque distribution, traction stability, and predictable vehicle handling in various road conditions.

Specifications and technical data

• SKU: 0B0500043K
• Mark: Audi
• Condition: Used
• OEM Part Number: 0B0500043K
• Substitutable numbers: 0B0500043K, 0B0 500 043 K
• Location on the vehicle: Rear
• Category: Differentials

Purpose and function in the drivetrain

The presented rear axle differential is designed to operate within the quattro all-wheel-drive system, where it is responsible for transferring power to the rear axle and properly differentiating wheel rotational speeds. Its location on the vehicle's rear ensures compatibility with half-shafts and other suspension and drivetrain components, which translates into stable vehicle behavior during acceleration, engine braking, and cornering.

Thanks to the properly selected gear ratio of the axle set, it is possible to maintain consistent drivetrain performance in line with factory settings of the control units and transmission, which is important for both driving dynamics and the durability of the entire system.

Benefits of using an original rear differential

Using an original rear differential in an Audi Q5 with quattro drive allows for maintaining factory drivetrain performance parameters without the need for electronic interference or software changes. This is particularly important in vehicles where the drivetrain works with advanced electronic stability control, traction control, and torque vectoring systems.

The main advantages of this solution include:

• maintaining predictable vehicle behavior in all road conditions,
• consistent cooperation with the quattro drive and other drivetrain components,
• reducing the risk of incorrect gear ratio matching in relation to the rest of the drivetrain,
• maintaining acoustic comfort at a level close to factory standards.

Installation and operational characteristics

The rear differential for the Audi Q5 FY 80A DAXB Quattro is a design adapted for installation in place of the factory rear axle, which facilitates workshop work and reduces replacement time. Its placement on the rear axle allows for direct connection to the half-shafts and the driveshaft, while maintaining the original suspension geometry and mounting points.

Used condition means that the part comes from dismantling, which in practice allows for a favorable price-to-quality ratio while maintaining the manufacturer's original design. For many users, this is a reasonable choice when it is necessary to replace the complete rear axle instead of performing a costly repair or regeneration.

Practical application and gear ratio selection

Selecting the right rear differential is crucial for driving characteristics – it affects acceleration, engine RPM at cruising speeds, and cooperation with the all-wheel-drive system. In the case of an Audi Q5 with quattro drive, it is important that the rear axle ratio is compatible with the ratios of other drivetrain components, which minimizes mechanical stress and ensures smooth operation of the entire system.

If you want to better understand how to choose a drive axle and differential for your driving style, it is worth consulting a specialist guide. A detailed discussion of gear ratios, component compatibility, and practical examples can be found in the article Dismantled drive axles and differentials – how to choose gear ratios for your driving style.

Expanding the Audi drivetrain – what else to consider

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

For a fuller picture of the cost-effectiveness of using original dismantled parts in the drivetrain, you can also read the analysis of costs and risks associated with transmission repairs – a practical comparison of regeneration versus installing original used components can be found in the material Manual transmission failures in cars – why is an original used part a more reasonable choice than regeneration?.