4.330" Bore Piston Oil Ring Rail Spacer Support (0.030" Thick) Set of 8 Failure or poor performance from

Failure or poor performance from a coil can result in a misfire

The Speedmaster top plates allow air to enter smoothly through the top

These Speedmaster Ford front covers are direct replacements for your stock timing chain cover

They're available in round and oval styles

Speedmaster small block 427 c

4.330" Bore Piston Oil Ring Rail Spacer Support (0.030" Thick) Set of 8 Failure or poor performance fromThese 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.