CP Piston & Ring Set for Subaru EJ257 WRX STi - Bore (100.5mm) - Size (+0.5mm) - CR (9.0) Set of 4

CP Piston & Ring Set for Subaru EJ257 WRX STi - Bore (100.5mm) - Size (+0.5mm) - CR (9.0) Set of 4

Marsoni

M251S

$442.57

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

CP Piston & Ring Set for Subaru EJ257 WRX STi - Bore (100.5mm) - Size (+0.5mm) - CR (9.0) Set of 4CP Piston & Ring Set for Subaru EJ257 WRX STi Bore (100. 5mm) Size (+0. 5mm) CR (9. 0) Set of 4 This Part Fits: Year Make Model Submodel 2004 2012 Subaru Impreza WRX STI 2007,2011 2012 Subaru Impreza WRX STI Limited 2010 Subaru Impreza WRX STI Special Edition

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The Good: Changing the fluid in the lower unit is a very easy DIY job. This can save you hundreds of dollars each year by doing it yourself. The Bad: You need a special pump to change the oil, and sometimes it comes with the gear lube. Unfortunately this product did not come with it. Luckily my neighbor had an extra one from changing the lube a different boat laying around and was able to use that. The Ugly: If you have to go get the pump, that could cost a few extra dollar but is just an extra nuisance. The pumps are interchangable but you just need to clean it between uses (DON'T MIX DIFFERENT OIL BRANDS)

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Reviewed in the United States on October 28, 2025

Verified Purchase

Joe H.

Massapequa, US

★★★★★ 5

Works fine in outdrive

Size: 32 oz, Style: 32 Fl Oz, Pattern Name: Lube

Good gear oil. Purple dye for leak detection

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Reviewed in the United States on April 2, 2026

Verified Purchase