Audi TT 8J Coil Spring Rear Axle Suspension Left Right N/O/S 8J0511115AQ

Audi TT 8J Coil Spring Rear Axle Suspension Left Right is an original component from the Leaf springs and coil springs group, designed for use on the left and right side of the rear axle. This used OEM part ensures the maintenance of factory deflection parameters, stability, and driving comfort, which is particularly important in the precisely tuned suspension of the Audi TT. This is a solution for users who want to restore the stock driving characteristics without interfering with the vehicle's geometry and performance profile.

Specifications and technical data

• SKU: 8J0511115AQ
• Mark: Audi
• Condition: Used
• OEM Part Number: 8J0511115AQ
• Substitutable numbers: 8J0511115AQ, 8J0 511 115 AQ, 8J0511115AR
• Location on the vehicle: Rear, Right, Left
• Part type: Coil Spring
• Category: Leaf & Coil Springs

Purpose and function in the suspension

The described rear axle spring has been designed specifically for the Audi TT 8J generation, with the aim of maintaining the correct ride height and predictable suspension performance. The component works on both the left and right side, which facilitates selection when replacing a pair of springs on the axle.

In combination with stock shock absorbers, the spring is responsible for:

• maintaining a stable body position relative to the drive axle,
• controlling deflection during dynamic driving,
• reducing body roll in corners and during braking.

Construction and fitment for Audi TT 8J

As an OEM component, the spring has been constructed for specific loads and weight distribution in the Audi TT 8J. Thanks to this, it ensures consistency with the factory tuning of the rear axle, without the risk of unwanted changes in vehicle handling.

Key functional features include:

• geometry matched to the stock spring seats on the beam and body,
• operating characteristics matched to the sport-tuned suspension system,
• possibility of installation on both sides of the rear axle without modifying additional elements.

Vehicle placement and installation aspects

The spring operates on the rear axle, on the left or right side, which allows it to be treated as a universal element for both sides within the same axle. This solution simplifies service – when replacing a pair of springs, there is no need to distinguish between left/right versions.

During installation, it is worth paying attention to:

• correct seating of the spring ends in the mounts,
• checking the condition of washers and rubber insulators,
• maintaining factory support points to avoid stress and noise.

Part condition and service application

The spring is a used component, which makes it an attractive solution for budget repairs or restoring the car to a state close to factory condition after damage to one of the rear springs. Choosing an original component from dismantling allows for maintaining consistency with other suspension elements, without introducing random changes in stiffness or height.

This solution is particularly useful when:

• one spring has broken and it is necessary to replace the pair on the axle,
• the car is to maintain its stock driving characteristics,
• compliance with factory Audi parameters is important, without experimenting with aftermarket replacements.

Selection support and knowledge expansion

If you are planning a comprehensive repair or upgrade of the rear axle suspension area in your Audi and need other elements from the same group, such as additional springs, leaf springs, or cooperating components, check the available parts in the Audi leaf springs and coil springs category.

For drivers interested in a broader context of suspension systems in all-wheel-drive cars, an article comparing various AWD solutions may be useful, available here: xDrive, 4Matic, quattro or 4Motion – a comparison of AWD systems.