I-cast iron master cylinder brakes ifaneleka ku-Chevrolet 1981-1996, GMC 1981-1996.I-bore diameter ingu-1-5/16″ okulingana no-25.8mm.I-diameter yentambo yezitolo ingu-1/2-20 kongemuva kanye no-9/16-18 kweyesibili.Inombolo ye-OEM yi-M39435, okuyingxenye ye-OEM 14066425 kanye ne-174-838.