★★★★★ 5
Amazing
Fit as directed for my wifes 1998 ford explorer sport and worked as described.
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Reviewed in the United States on May 6, 2026
BorgWarner Turbocharger SX K04 Audi RS4 Upgrade (Left)
Marsoni
M251S
Get it in 3 business days with 1 day shipping.
Friday, May 29
BorgWarner Turbocharger SX K04 Audi RS4 Upgrade (Left)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
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- Fast: 2-3 business days
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
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★★★★★ 5
PRICES
GREAT
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Reviewed in the United States on October 5, 2025
★★★★★ 5
Good filter
Pretty thick. May restrict airflow a little bit but it's a good filter.
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Reviewed in the United States on November 2, 2024
★★★★★ 5
Fits like a glove
Filter my air
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Reviewed in the United States on February 25, 2026
★★★★★ 5
Noticeable scent difference compared to factory standard
Smells clean for months. We are mainly gravel roads and these cabin filters do a great job
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Reviewed in the United States on April 3, 2026
