CNC Machined to maintain close tolerances and strict quality control ,these billet oil pumpsall feature the same oiling pattern as81-99 engines.This results in a slpit oil path that applies more pressure at the top end for longer component life.Each pump features multiple oil ports for a variety of plumbing options.Kit includes billet oil pump,supply and return gears,drive shaft w/keys and snap rings,check ball and spring pressure relief valve and spring,cover screws with o-rings,gaskets,fittings and hardware No provision is made for rear chain oilers