Fits: 04-13 Subaru Impreza WRX Legacy Outback 2.5L DOHC EJ255 EJ257 (see description below) Ultra Performance Custom Made Premium Grade Aluminum Silicon Pistons Gas Nitrited Steel Rings, 50% Longer Life, Reduce Tension with Better Fuel Economy, Reduce Cylinder Wear Much improved design with more efficient oil passage holes in oil ring groove. Minimizes fractures & cracks. No more gummed up oil. Reduces engine failure Meets or exceeds OEM specifications. Easily lasts 150,000+ mile Complete Pistons with Ring Set
Compression Ratio: Stock
Standard Diameter: 99.50mm
1st Group: 1.20mm
2nd Group: 1.20mm
Oil Ring: 2.00mm

Part Numbers:
PA99013.STD

Note: This piston set only fits DOHC (double overhead cam) engines.

Product Fitments:
06 SAAB 9-2X 2.5L 2458CC H4 DOHC TURBOCHARGED, (16 VALVE), ENG. CODE "EJ255"
04-06 SUBARU BAJA 2.5L 2458CC H4 DOHC TURBOCHARGED, (16 VALVE), ENG. CODE "EJ255"
04-13 SUBARU FORESTER 2.5L 2458CC H4 DOHC TURBOCHARGED, (16 VALVE), ENG. CODE "EJ255"
06-13 SUBARU IMPREZA 2.5L 2458CC H4 DOHC TURBOCHARGED, (16 VALVE), ENG. CODE "EJ255"
04-13 SUBARU IMPREZA 2.5L 2458CC H4 DOHC TURBOCHARGED, (16 VALVE), ENG. CODE "EJ257"
05-12 SUBARU LEGACY 2.5L 2458CC H4 DOHC TURBOCHARGED, (16 VALVE), ENG. CODE "EJ255"
05-09 SUBARU OUTBACK 2.5L 2458CC H4 DOHC TURBOCHARGED, (16 VALVE), ENG. CODE "EJ255"
13 SUBARU WRX STI 2.5L 2458CC H4 DOHC TURBOCHARGED, (16 VALVE), ENG. CODE "EJ257"
13 SUBARU WRX 2.5L 2458CC H4 DOHC TURBOCHARGED, (16 VALVE), ENG. CODE "EJ255"