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JE Pistons oil rail support for 4.500–4.529 in bore pistons is a single piston oil rail support component that includes a special locking detent to prevent rail rotation. The detent keeps the rail support gap 90° from the pin bore opening, helping stop oil ring rails from spiraling off pistons that have short compression distances and maintaining ring positioning during engine operation.
JE Pistons 4.5-4.529in Bore Oil Rail Support
