Great news – on this purchase, you'll enjoy a BuildBUX bonus of $1.51.
Regular Price: $200.24 - Instant discount: $49.73 = $150.51
Product Fitment:
2002-2014 Subaru WRX
2004-2021 Subaru STI
2005-2012 Subaru Legacy GT
2005-2009 Subaru Outback XT
2004-2013 Subaru Forester XT
Restore factory performance and reliability with the Mahle OE Piston Ring Set for Subaru WRX (2002–2014), STI (2004–2021), and Legacy GT (2005–2012). Mahle is a world leader in OEM engine components, and their piston rings are engineered to meet the strict demands of modern performance engines.
Built using advanced OE-driven technology, Mahle piston rings are designed to reduce friction, minimize oil consumption, and extend service life under both daily use and high-performance driving. Their lightweight design and precise ring tension promote efficient sealing, improved combustion, and consistent cylinder pressure—crucial for turbocharged EJ engines.
Whether you’re rebuilding a stock motor or refreshing a performance setup, Mahle’s 42308CP piston rings deliver the durability, reliability, and exact fitment expected from a top-tier OEM supplier.
OE-level design and manufacturing quality
Reduced friction for improved efficiency and performance
Lower ring mass for faster response and better sealing
Minimizes oil consumption and blow-by
Long service life backed by industry-leading technology
Trusted by engine builders for turbocharged Subaru EJ applications
Upgrade your engine rebuild with the proven performance and OE reliability of Mahle piston rings.
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