4.560" Bore Piston Oil Ring Rail Spacer Support (0.030" Thick) Set of 8 faster acceleration and top-speed performance

faster acceleration and top-speed performance

to provide maximum performance

Perfect for replacing missing or damaged mounting caps

Ford rear-end housings

351c Cleveland

4.560" Bore Piston Oil Ring Rail Spacer Support (0.030" Thick) Set of 8 faster acceleration and top-speed performanceThese Speedmaster piston oil ring spacers are used in applications where the piston oil ring groove intersects the pinhole. Speedmaster 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 Speedmaster piston oil ring spacers will keep your pistons working smoothly throughout the entire operating range.