S&S, HVHP oil pump. Universal cover

84-91 B.T. (NU)

With universal cover: Several feed & return options, allowing maximum flexibility for customized applications. This S&S High Volume High Pressure (HVHP) oil pump was designed for, and used on all, S&S 4-1/8" bore Super Sidewinder Plus engines. The SSW+ engines are equipped with piston cooling jets that spray oil on the bottom of the pistons. This pump was designed to supply enough oil for the jets, and the rest of the engine. Although the outside is similar to the regular S&S billet pumps, the inside is different. Amongst others wider gears are used. Features include: *New tooth profile on feed & return gears for more volume *9% wider feed gears *28% wider return gears *Same thickness as stock pumps. Stock drive shaft is re-used