Oil Pump Assembly - Big Twin

Filter your oil before it enters your motor. Complete with fittings that send oil to the filter before pumping it through your engine. Allows the use of 10-micron oil filters for additional protection. Machined from 6061 T-6 aluminum billet and polished to a mirror finish. Patented three-valve system delivers oil to the crankshaft at idle. Stainless steel check-valve eliminates wet-sumping upon startup; positively will not leak oil into lower end during storage. No provisions for primary or rear-chain oiling. Replacement gasket kits include cover gasket, body gasket, snap rings and keys. U.S. Patent #6,230,680.