Audi R8 42 Milltek Sport Rear Exhaust System Muffler Back Box Double Pipe 4.2

Visual condition of the part

The product shows signs of use visible in the photos.

Audi R8 42 Milltek Sport Rear Exhaust System Muffler Back Box Double Pipe 4.2 is a proposal for drivers who want to achieve a more distinctive character for their car while maintaining the functionality of the exhaust system. This component from the Mufflers and resonators group has been designed for installation in the rear part of a gasoline-powered vehicle, ensuring sporty exhaust flow and appropriate acoustics. This solution is particularly attractive for users looking for a used, proven component with a distinctly sporty pedigree.

Specifications and technical data

• SKU: MSAU388
• Mark: Unbranded
• Condition: Used
• OEM Part Number: MSAU388
• Substitutable numbers: MSAU388, Milltek, R8 42
• Location on the vehicle: Rear
• Fuel type: Petrol
• Part type: Silencer
• Category: Mufflers & Resonators

Purpose and technical characteristics

The Milltek exhaust system mounted at the rear of the vehicle has been developed for Audi R8 4.2 gasoline engines, where stable exhaust discharge at high RPM is crucial. The rear exhaust system design is responsible for the final section of the exhaust, influencing the sound, flow, and aesthetics of the rear of the car. The double exhaust pipe finish gives the car a distinctly sporty look and emphasizes the character of the V8 unit.

Construction and function in the exhaust system

This rear muffler acts as the final element of the system, where noise reduction and engine sound shaping occur. Thanks to the appropriately selected geometry of chambers and passages, the Milltek exhaust allows for a more dynamic acoustic characteristic compared to standard solutions, while maintaining damping functions. The placement in the rear of the vehicle facilitates service and potential assembly work, and the use of a double pipe improves even exhaust discharge from both cylinder banks.

Application in gasoline vehicles

The element has been prepared to work with the exhaust system of a gasoline engine, where the temperature and velocity of exhaust gases are higher than in diesel units. Thanks to this, the muffler is adapted to the loads typical for dynamic driving, frequent acceleration, and operation in the upper RPM range. For the user, this means stable system operation, predictable car behavior, and the ability to utilize the potential of the power unit without unnecessary restrictions on the exhaust side.

Benefits of installing a used sports muffler

Choosing a used Milltek muffler for the Audi R8 4.2 allows you to combine reasonable cost with achieving a sporty exhaust character. For many owners of older R8 models, this is a practical way to refresh the exhaust system, improve the sound, and prepare the car for further operation or modifications. A used element from the Mufflers and resonators segment can also be a good base for further work, e.g., when building an individual exhaust configuration.

Expanding exhaust system upgrades

If you are planning a comprehensive repair or upgrade of the exhaust system zone in your Audi and need other elements from the same group, such as rear mufflers, center mufflers, or resonators, check the available parts in the Unbranded Mufflers and resonators category.

When planning upgrades for older sports models, it is also worth considering the use of proven components from dismantling – you can find more practical tips in the article No parts at the dealership? How to deal with repairing older models using parts from dismantling, which shows how to approach such repairs effectively and economically.