JE Pistons Oil Rail Support

JE Pistons is a well-known name in high-performance engine components, and they've developed this oil rail support to address a specific issue in certain piston designs. This part is designed to keep the oil ring rails from spiraling or rotating out of their grooves, especially in pistons that have shorter compression distances. This can happen when the oil ring groove is close to the piston pin bore, allowing the rail to shift.

What makes this JE part unique is its special locking detent. This feature ensures the oil rail stays in place and prevents it from rotating within the oil ring groove. JE Pistons specifically designs this detent to keep the rail support gap 90 degrees away from the pin bore opening on the piston, a detail that helps maintain proper oil control and ring seal. It's built for pistons with a minimum bore of 4.600 inches and a maximum bore of 4.635 inches, with a radial depth of 0.203 inches.