CP Ring ONLY for SC7021 Pistons

Marsoni

M251S

$30.25

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

CP Ring ONLY for SC7021 PistonsSKU: CPN 3327 CP Ring Pack for SC7021 Pistons Subaru STI 2004 2021 CP CPN 3327 ring pack provides exact fit for SC7021 pistons in Subaru WRX STI EJ257 engines. Built for 2004 2021 models this set ensures reliable compression sealing during extreme boost and high RPM. Perfect for engine rebuilds that demand consistent power delivery and durability. Key Features Exact Piston Match: Sized for 99. 75mm bore SC7021 pistons ensures zero gap issues and full

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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.
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The Honda parts sites that appeared in my search results mostly appear to be using the same software for their web-based storefronts and all charging $70+ to $80+ and shipping. These SCREW RHINO filters fit just like the OEM parts, are the same quality and cost about 1/4 of the price. I will not be buying these filters from the dealer parts stores ever again.

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Reviewed in the United States on April 11, 2026

Verified Purchase

Carole T.

Lexington, US

★★★★★ 5

Better quality that original

Style: 2.0L

As advertised, perfect fit. The cabin filter is better constructed than original Honda filter that I replaced

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Reviewed in the United States on May 23, 2026

Verified Purchase