BorgWarner K04 left-side turbocharger upgrade for the Audi RS4 B5 2.7L biturbo. A direct-fit upgrade over the factory turbo that flows more air for added power and response while retaining OEM-style fitment. Sold individually for the left (driver-side) position.
Specifications
| Type | K04 turbocharger upgrade (left) |
| Position | Left (driver side) |
| Engine | Audi RS4 B5 2.7L biturbo |
| Bearing Housing | Water-cooled |
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