4.560" Bore Piston Oil Ring Rail Spacer Support (0.030" Thick) Set of 8 Like all Speedmaster cylinder heads

Like all Speedmaster cylinder heads

Speedmaster stud girdles will tie your studs together

These Speedmaster filters are washable and reusable

The automobile engine is a perfect balance of science and mechanical engineering

Note: The 52000/52001 manifold is a stock replacement/street legal part for 302

4.560" Bore Piston Oil Ring Rail Spacer Support (0.030" Thick) Set of 8 Like all Speedmaster cylinder headsThese 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.