Mahle PowerPak 92.50mm Bore 1.287 C/D Piston and Ring Kit 2002-2005 Subaru WRX

Part #: 930020342. Mahle's PowerPak piston assemblies are a top - notch choice for your 2002 - 2005 Subaru WRX. This all - in - one, race - proven package includes forged pistons, piston rings, pins, and wire locks. The pistons are carefully hand - deburred and coated with dry phosphate. This coating protects against ring micro - welding and pin galling during the initial startup. To boost performance, Mahle has added its special Grafal anti - friction coating to the piston skirts. The package also features low - drag rings, steel pins, and round wire locks. Specs: Pistons PowerPak with 92.50mm Bore, 2.953 Stroke, 5.137 Rod, 23mm Pin, 1.287 C/D, 8.0:1 Compression Ratio, - 12cc Dome Volume, and 348 Gram Weight (for Subaru Impreza 2002 - 2005).

Using this Mahle piston and ring kit for your 2002 - 2005 Subaru WRX is quite straightforward. First, make sure your engine is properly prepared and cleaned before installation. Follow the included instructions carefully when fitting the pistons, rings, pins, and wire locks. When starting the engine for the first time, give it a gentle run - in period to let the dry phosphate coating do its job of protecting against ring micro - welding and pin galling. For maintenance, regularly check the engine oil level and quality. If you notice any unusual noises or performance issues, stop using the vehicle and have it inspected. Keep the engine clean to prevent dirt and debris from affecting the pistons and rings. With proper use and maintenance, this kit will serve you well and enhance your vehicle's performance.