S&S Cycle HVHP Oil Pump With Gears - Universal708444991 Product Description HVHP oil pumps have a new gear tooth profile with fewer but larger teeth that provides an increased oil volume for both supply and return side of the pump 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 Kit includes supply gears,