SKU: 53049880026 | UPC: 4063984007331
BorgWarner Turbocharger SX K04 Audi RS4 Upgrade (Right) 2000-2001
The BorgWarner SX K04 turbocharger serves as a direct right-side upgrade for 2000-2001 Audi RS4 models with the 2.7T engine. It replaces the factory K03 unit to deliver higher boost levels and quicker response for substantial power gains. This turbocharger maintains OEM mounting points for seamless integration into RS4 twin-turbo setups.
Key Features
- Larger Billet Compressor Wheel: 46mm inducer with extended tip technology increases airflow by 30% over stock for 400+ whp potential per side
- Optimized Compressor Housing: Anti-surge ported design reduces compressor surge and supports up to 1.5 bar boost reliably
- Forged Clipped Turbine Wheel: Nimonic alloy construction enhances heat resistance and durability under high exhaust gas temperatures
- Journal Bearing CHRA: Oil-cooled center housing provides smooth operation and longevity in daily or track use
- Cast Iron Turbine Housing: T3 twin-scroll inlet matches RS4 manifold for rapid spool under 3500 RPM
Product Notes
- Special order item with lead time of 3-5 business days
- No core charge required
- Pair with left-side K04 (53049880025) for balanced performance
Installation Notes
- Professional installation recommended.
- ECU tune and boost controller required to utilize full capacity
- Direct bolt-on with stock hardware and exhaust manifold
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2000-2001 | Audi | RS4 | Base |
Why Choose BorgWarner?
- Official OEM supplier to Audi with millions of turbos in service
- Proven in RS4 builds worldwide delivering 450+ whp reliably
- Precision balanced assembly reduces vibration and wear
Frequently Asked Questions
- Q: Will this turbo fit other Audi 2.7T models?
A: Designed specifically for 2000-2001 RS4 right side. Other B5 S4 models require manifold adapter and tuning adjustments - Q: What materials are used in construction?
A: Billet aluminum compressor wheel, investment cast aluminum compressor housing, Ni-Resist cast iron turbine housing - Q: What is the warranty coverage?
A: 12-month unlimited mileage warranty when installed by certified shop with proper tuning
Shipping & Handling
- Method: Standard ground shipping
- Availability: In stock – ships same or next business day
- Packaging: Securely boxed 20 x 16 x 16 inches
- Weight: 25 lbs
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