4.540" Bore Piston Oil Ring Rail Spacer Support (0.030" Thick) Set of 8 These durable but lightweight aluminum

These durable but lightweight aluminum pumps push up to 60 gallons of water per minute of coolant circulation

that have a 4bolt pattern

They start to make awesome power around 3

Designed with a drain plug for easy fluid inspection or transmission service without the mess of dropping a full pan of fluid

Speedmaster flexplates make excellent upgrades to your stock design

4.540" Bore Piston Oil Ring Rail Spacer Support (0.030" Thick) Set of 8 These durable but lightweight aluminumThese 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.