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JE Pistons forged single piston for Subaru EJ series applications, specified for an inverted dome/dish profile with a 3.917 in. bore and 8.50:1 compression ratio. Made to the engine's application requirements, JE pistons are forged and machined in the USA to deliver durability under high demand. This left piston is provided as an OEM‑matched replacement for rebuilds and performance engine assemblies.
JE Pistons SUB STI EJ257 Block w/ EJ20 Head 99.5mm Bore CR 8.5 (Left Side) Single Piston
