31-6209 HVHP oil pump. Standard cover

When you're building a high-performance Evolution engine, oil management is everything. This S&S High Volume High Pressure (HVHP) oil pump is the same unit used on their massive 4-1/8 inch bore Super Sidewinder Plus engines. It is specifically engineered to provide enough flow for piston cooling jets while maintaining pressure for the rest of the motor. It features a standard style cover with feed and return holes in the stock locations, making it a great choice for 1992 to 1999 Big Twin models, excluding Twin Cams. The pump uses wider gears—9% wider on the feed side and 28% on the return—to move more oil without increasing the overall thickness of the pump. It is sold as a kit and re-uses your stock drive shaft.