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Win this M240i!
Every $50 spent = 1 entry*

No purchase necessary to enter or win. See official rules.

RS4 K04 Turbochargers - Complete Kit

Comprehensive kit includes the left & right side RS4 K04 turbochargers, 034Motorsport RS4 Inlet Pipe set, and associated installation hardware
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Product Details

If your turbochargers have reached the end of their life or you're just looking for a performance upgrade, ECS Tuning has put together the ultimate kit just for you. This kit allows you to upgrade to the more durable and higher performing turbocharger setup found on the European RS4 2.7T, including the necessary hardware for installation. This kit does not include the oil return lines, but it is recommended that they be replaced with the turbocharger to ensure the turbochargers stay properly lubricated.

Kit Includes: 

  • Left (K04-025) & Right (K04-026) side Borg Warner RS4 K04 turbochargers
  • 034Motorsport RS4 K04 Inlet Pipe Kit
  • Turbocharger installation kit - Necessary installation hardware

*2003 and 2004 A6 and Allroad 2.7T's with automatic transmissions have a different downpipe design, and some modification is required for installation.*


*ECS Tuning's Official Policy regarding Borg Warner KKK Turbocharger Warranty Claims*

To be eligible for warranty consideration, Borg Warner has stipulated that KKK turbochargers (or turbocharger kits) must be installed by a professional repair facility.

  • Warranty claims must be accompanied by a receipt from a professional repair facility showing the date and vehicle mileage when the turbocharger was originally installed.

  • An additional receipt from a professional repair facility must accompany the warranty claim indicating:

1. Date and mileage at which the turbocharger failed

2. Reasons for turbocharger failure

3. Proposed repairs intended to correct the cause of the failure (if any).

Borg Warner will, at its discretion and with proper documentation, replace a turbocharger that has failed due to defects in materials and/or original workmanship. All associated labor charges for diagnosis and repair are the responsibility of the vehicle owner.


*RS4 turbochargers have the ability to produce too much boost & air volume for your stock fuel system & programming. This is not a complete turbo upgrade kit*

This Part Fits the Following Vehicles

Make Model Submodel Engine
Audi B5 S4 All 2.7T
Audi C5 A6 Quattro 2.7T
Audi C5 Allroad Quattro 2.7T
*The above product applications have been written by ECS Tuning. All warranties, product application, fitment, and performance are the responsibility of ECS Tuning. For additional information see the terms of use.


ECS Tuning is not affiliated with any automobile manufacturers.
Manufacturer names and/or part numbers are used only for identification purposes.

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