4.600" Bore Piston Oil Ring Rail Spacer Support (0.030" Thick) Set of 8 capable of withstanding valve spring

capable of withstanding valve spring load up to 600lbs

or larger wheels to clear them

capable of withstanding valve spring load

and their special serrated nuts guard against pan loosening during operation

4.600" Bore Piston Oil Ring Rail Spacer Support (0.030" Thick) Set of 8 capable of withstanding valve springThese 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.