BorgWarner Turbocharger SX K04 Audi/VW 1.8L 5V TFSI Upgrade

BorgWarner Turbocharger SX K04 Audi/VW 1.8L 5V TFSI Upgrade

Marsoni

M251S

$975.76

Get it in 3 business days with 1 day shipping. Friday, May 29

BorgWarner Turbocharger SX K04 Audi/VW 1.8L 5V TFSI UpgradeSKU: 53049887501 UPC: 4063984022013 BorgWarner Turbocharger SX K04 Audi VW 1. 8L 5V TFSI Upgrade 2002 2009 BorgWarner SX K04 turbocharger delivers direct bolt on performance upgrade for Audi A4 A4 Quattro TT and VW Passat 1. 8T 20V TFSI engines. Replaces stock K03 unit with quicker spool up and higher boost levels for noticeable power increase. Maintains OEM fitment and drivability with enhanced airflow up to 350 HP potential. Key Features Ball

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Exchange/Return Notes

We offer a 30-day return/exchange service after receiving.
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No reason not to go OEM for this! Came with every possible gasket and seal I could need. Specifically for my Alpha One Gen 1 it took maybe 25-30 min to completely install. While you’re there check the base plate for wear and the other surrounding items like your water tube. Rather keep the lower unit off for an extra day to get another part than a catastrophic failure.

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Reviewed in the United States on September 9, 2025

Verified Purchase

Taylor 🤍

Lexington, US

★★★★★ 5

Husbands things

My husband bought this. I don’t know much about it but he has zero complaints. He bought it for a boat. He has fixed up 2 boats, sold one & we kept the other. So he apparently knows what to buy & how to use it.

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Reviewed in the United States on November 6, 2025

Verified Purchase

Edward W.

Waukegan, US

★★★★★ 4

Amazon is easy and fast . No problems the oarts was exactly as described.

liked that everything was in one bag . and could make sure everything was changed .

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Reviewed in the United States on August 3, 2020

Verified Purchase

Justin Yeager