JE Pistons piston ring set sized 1.2 / 1.2 / 2.5mm for the Subaru EJ257 block with EJ20 head combination. Engineered for precision combustion sealing and reduced friction, with a high-quality ductile iron top ring (plasma-moly inlay), taper-faced reverse-torsional second ring, and a 3-piece oil assembly with flex-vent spacer.
| Ring Pack | 1.2 / 1.2 / 2.5mm |
| Application | Subaru EJ257 block w/ EJ20 head |
| Part Number | JG4904-3937 |
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