CP Piston & Ring 100mm Bore 8:2 CR WRX / STI Subaru Turbo EJ255 / EJ257 Models 2004-2021 120 smooth positive engagement

smooth positive engagement

direct replacement or upgrade to the standard

The Invidia turbo outlet is also referred to as an O2 housing

2004-2005 Subaru Forester XT

AEM's progressively controlled high-pressure pump draws water (or up to a 50% alcohol mixture) from the one gallon tank with integral fluid level sensor to provide boost-dependent variable flow

CP Piston & Ring 100mm Bore 8:2 CR WRX / STI Subaru Turbo EJ255 / EJ257 Models 2004-2021 120 smooth positive engagementPart #: SC7421 CP WRX and STI forged pistons feature superb ring seal, higher vacuum, lower blow by, greater durability and increased horsepower and torque through the power band. Better yet, peak horsepower is retained through the life of the piston rings. This is achieved by lightweight forgings and CP's exclusive machining techniques and processes. CP's commitment to racing is reflected in every piston they produce. CP is dedicated to superior