4.000 Bore Piston Oil Ring Rail Spacer Support, 0.030 Thick | Speedmaster PCE308.1018

These PCE piston oil ring spacers are used in applications where the piston oil ring groove intersects the pinhole. PCE piston oil ring spacers are manufactured from spring steel and install against the bottom sill of the oil ring groove. Available in different bore diameters to suit your specific engine's needs, the PCE piston oil ring spacers will keep your pistons working smoothly throughout the entire operating range.

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Oil Support Rail (OSR)

Jay's Tech Tips #45: Oil Support Rail - Real Street Performance

Piston Oil Ring Spacers - Free Shipping on Orders Over $109 at

4.125 Bore Piston Oil Ring Rail Spacer Support (0.030 Thick) Set of 8

BackSpecsBrand:PCEPart Number:PCE305.1020Part Type:PistonsBore (in):4.125 in.Piston Style:Flat top, with two valve reliefs Piston Material: Forged

Chevy 400 427 Ford 351W Windsor 4.125 1.015 Dished -16cc Forged Pistons

Engines and Components - Pistons/Rings - 4.030 Bore - Page 1

SPEEDMASTER ADJUSTABLE BILLET PISTON RING COMPRESSOR 4.000 TO 4.070 GM LS2, LS3

Jay's Tech Tips #45: Oil Support Rail - Real Street Performance