4.500" Bore Piston Oil Ring Rail Spacer Support (0.030" Thick) Set of 8 Using only three parts--a laser-welded

Using only three parts--a laser-welded sealed housing

Speedmaster offers these HEI Upgrade kits for your stock distributor

They're designed with performance in mind

These coils have corrosion-protected laminations to protect coils from the harsh operating environment

the least runout

4.500" Bore Piston Oil Ring Rail Spacer Support (0.030" Thick) Set of 8 Using only three parts--a laser-weldedThese 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.