SKU: 53049880025 | UPC: 4063984007249
BorgWarner Turbocharger SX K04 Audi RS4 Upgrade (Left) 2000-2002
The BorgWarner SX K04 Turbocharger serves as a left-side upgrade for the twin-turbo 2.7L engine in 2000-2002 Audi RS4 models. This direct bolt-on replacement delivers higher boost levels with faster spool-up compared to stock K04 turbos. Pair it with the matching right-side unit for balanced power gains up to 500+ horsepower.
Key Features
- Billet Compressor Wheel: 46mm inducer 60mm exducer design handles 50% more airflow for improved throttle response and top-end power
- Ball Bearing CHRA: Dual ceramic ball bearings reduce friction for spool times under 1500 RPM and long-term durability
- High-Flow Turbine Wheel: 54mm Inconel bi-directional wheel with 46mm exducer supports elevated exhaust flow in anti-clockwise rotation for left-side fit
- Ported Compressor Housing: 3-inch inlet 2-inch outlet anti-surge design prevents compressor surge at high boost
- Cast Turbine Housing: T3 divided .64 A/R housing retains stock mounting positions for seamless integration
Product Notes
- Match with BorgWarner SX K04 right-side turbo PN 53049880026 for optimal twin-turbo performance
- Break-in oil required during initial startup per BorgWarner guidelines
- Heavy item ships freight or ground with signature confirmation
Installation Notes
- Professional installation recommended.
- Use new gaskets and ARP head studs for boost over 25 PSI
- Bolts directly to stock exhaust manifold and downpipe fittings
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2000-2002 | Audi | RS4 | Quattro 2.7L |
Why Choose BorgWarner?
- Supplies OEM turbos to Audi and other premium brands
- Proven in racing with millions of miles of real-world testing
- Manufactured with tight tolerances for consistent boost delivery
Frequently Asked Questions
- Q: Will this turbo fit my 2000-2002 Audi RS4?
A: Yes it bolts directly to the left-side position on B5 RS4 2.7L BiTurbo engines no modifications needed - Q: What materials are used in construction?
A: Billet aluminum compressor wheel Inconel turbine wheel investment cast housings and journal ball bearings throughout - Q: What is the warranty coverage?
A: One-year unlimited mileage warranty against defects when installed by certified shop
Shipping & Handling
- Method: Standard ground freight
- Availability: In stock – ships same or next business day
- Packaging: Double-boxed protection 18 x 14 x 14 inches
- Weight: 22 lbs
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