The Speedmaster PCE308.1017 is a precision-machined piston oil ring rail spacer support designed for LS engines running a 3.900" bore. At 0.040" thick, this spacer provides the critical support needed to properly position and stabilize oil ring rails within the ring groove, helping maintain consistent oil control and ring seal integrity under demanding performance conditions.
Whether you're building a high-performance street engine or a dedicated race application, this oil ring rail spacer support is an essential component for ensuring proper ring pack assembly on your LS bore piston setup. Sold as a individual support — verify your bore size and ring groove specifications before ordering to confirm fitment.
MPNPCE308.1017
UPC840136538424
