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BorgWarner Turbocharger SX K04 Audi RS4 Upgrade (Left)

Marsoni M251S
Sale price$887.63
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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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4.5 ★★★★★
Based on 442 reviews
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BetterEveryDay
Carnegie, US
★★★★★ 5
I usually wear 11.5's, but I buy 1/2 size smaller to accommodate for stretch. Leather relaxes.
Size: 11, Color: Burgundy Polished Full Grain
5 STARS: These shoes are awesome. I keep coming back for more. I have major foot problems, have tried all kinds of shoes, orthotics, and inserts... but believe it or not, these shoes work better than any of that stuff. I wear them daily. I buy lots of them, for home, for church, and I'm getting my first pair of J&M boots today, for winters in Indiana... Brrrr
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 18, 2025
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Verified Purchase
tjw
Lowell, US
★★★★★ 3
Way too narrow
Size: 9.5 Wide, Color: Burgundy Polished Full Grain
I ordered a wide in this shoe, but it was still way too narrow. I had to return them. Otherwise, it looked like a nice quality shoe.
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Reviewed in the United States on February 12, 2026
A
Verified Purchase
Anthony C.
Massapequa, US
★★★★★ 5
Penny loafers - best new old style
Size: 10, Color: Burgundy Polished Full Grain
These fit great. Real old school style reborn as original. Comfortable leather and looks great with jeans or dress pants.
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Reviewed in the United States on June 25, 2025
Z
Verified Purchase
zz top fan
West Palm Beach, US
★★★★★ 5
Stylish and well made.
Size: 13 Wide, Color: Brown Crazy Horse
Good fit and well made. I have had good luck with Florsheim.
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Reviewed in the United States on May 21, 2026
A
Verified Purchase
Amazon Customer
Lowell, US
★★★★★ 5
The Berkley Flex
Size: 7, Color: Cognac Multi
Very nice shoes, very comfortable, very nice leather. When ordering though, they fit a half size smaller than your size, because they are a tight-fitting shoe.
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Reviewed in the United States on October 25, 2025

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