Piston Ring
Fits Sierra 1500 HD; UPPER COMPRESSION RING IS 1.2MM THICK; Standardor Sierra 1500 Base Model; Upper Compression Ring is 1.2mm Thick; STD w/o 4 Drilled Oil Drain Holes On 3rd Ring Land. Use 89017484 Ring Use w/ 89017478 Piston Only.
Piston Ring
Fits Sierra 1500 Base Model; .5MM O.S.; Upper Compression Ring is 1.2 mm Thickor Sierra 1500 HD; UPPER COMPRESSION RING IS 1.2MM THICK; .5MM O.S.