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JE Piston oil rail supports are piston‑mounted retainers that prevent oil rail rotation and keep the oil rail support gap at 90° from the pin bore opening. Each support features a special locking detent to stop the rail from rotating or spiraling off pistons with short compression distances. Specified dimensions cover a 3.935 in minimum bore to 3.959 in maximum bore with a 0.173 in radial depth, sold individually for precise piston fitment.
JE Pistons Oil Rail Support
