BorgWarner K04 Turbocharger Upgrade Right - Audi RS4 (B5 2.7L Biturbo)

BorgWarner K04 Right Upgrade Turbocharger - Audi S4 / A6 / Allroad 2.7L 2000-2005

BorgWarner SKU: BWA53049880026
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This is the right side BorgWarner K04 upgrade turbocharger from the Audi RS4 2.7L biturbo, used to upgrade the factory K03 turbos on the B5 S4, C5 A6 2.7T and allroad 2.7T. It is one half of a pair, so the left side K04 (53049880025) is needed as well. It mounts to the factory exhaust manifold and downpipe, needs K04-specific turbo inlet pipes, and makes more boost and airflow than the stock fuel system and engine programming support, so fuel and tuning upgrades go with it.

Specifications

Type Upgrade turbocharger
Series K04 (RS4 2.7L biturbo)
Position Right side
Engine 2.7L biturbo V6
Install Mounts to the factory exhaust manifold and downpipe; K04-specific turbo inlet pipes required
Tune Required Yes, fuel and engine programming upgrades are needed
Fitment Notes 2.7L biturbo only (S4, A6 2.7T, allroad 2.7T); 2003-2004 A6 and allroad with automatic transmission need modification for their different downpipe; also fits the 2000-2001 RS4, which was not sold new in the US
Quantity 1
Part Number 53049880026

This part fits:

Year Make Model Submodel
2000-2004 Audi A6 Quattro Base
2001-2005 Audi Allroad Quattro Base
2001-2002 Audi S4 Avant
2000-2002 Audi S4 Base

Is this one turbo or a pair?

  • One turbo, the right side. The left side is 53049880025.

What else is needed?

  • K04-specific turbo inlet pipes, plus fuel and engine programming upgrades.

Does it fit an automatic A6 or allroad?

  • 2003-2004 A6 and allroad automatics have a different downpipe and need modification.

Which engine is it for?

  • The 2.7L biturbo V6 in the B5 S4, C5 A6 2.7T and allroad 2.7T.

Shipping

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Returns

  • 30 days from delivery to request and ship back a return on new, uninstalled items in original packaging with all hardware.
  • Standard returns: 8% restocking fee on the item price before tax and shipping. Shipping is not refunded in either direction. All waived if the item is defective or we made the error.
  • Fitment guaranteed: select your vehicle above, or confirm fitment with us in writing before you order. If the part shows as a fit and it is wrong, the return is on us, even after installation. Otherwise, installed or used parts cannot be returned.
  • Final sale: special orders, coilovers, electronics, engine internals, turbochargers, superchargers and turbo kits, unless defective or we sent the wrong item.
  • Product images may be representative. The SKU and specifications in the listing are what ships.
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