JE Pistons oil rail supports incorporate a special locking detent to prevent rotation of the oil rail and keep the rail support gap 90 degrees from the pin bore opening. These supports are specified to prevent oil ring rails from spiraling off pistons with short compression distances. Each unit is sized to fit a 4.120–4.154 in bore with a 0.162 in radial depth and is supplied individually.
JE Pistons Oil Rail Support 7GR