High Volume / High Pressure Billet Oil Pump / '92-'99 Evo Big Twin

Fits 92 - 99 EVO Supply-side gears are 9% wider than stock Return gears are 28% wider than stock to ensure that the additional volume of oil supplied to the engine is scavenged and returned to the oil tank, reducing the amount of oil in the crankcase breather Oil pumps only include supply gears, return gears, drive shaft keys, drive shaft snap rings, check ball, check ball spring, pressure valve spring, cover screws with O-rings, miscellaneous hose fittings, plugs, screws, gaskets, mounting hardware and instructions Made in the U.S.A.