4.000" Bore Piston Oil Ring Rail Spacer Support (0.030" Thick) Set of 8 Four corner water ports

Four corner water ports

Speedmaster Twin-Carb combine two four-barrel carburetors to achieve the best balance of drivability

wall DOM steel

The Ford Modular Ram Air Intake Manifold was designed for high-performance applications where induction system height is not limited

4.000" Bore Piston Oil Ring Rail Spacer Support (0.030" Thick) Set of 8 Four corner water portsThese 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.