S&S Cycle Oil Pump Kit For Harley Big Twin 1978-1991

S&S Oil Pump Kit For Harley Big Twin

The S&S Oil Pump Kit is a high-performance upgrade designed to replace the stock oil pump with improved reliability and efficiency. Featuring a smoother internal design and pressure relief towers that are 0.300" shorter than the OEM version, this pump enhances oil flow and reduces friction for superior engine performance. The complete all-in-one kit includes the oil pump, universal cover with top and bottom feeds, mounting bolts, supply and return gears, drive shaft with keys and snap rings, check ball and spring, pressure relief valve and spring, as well as all necessary o-rings, hose fittings, plugs, hardware, and gaskets for a straightforward installation.

Features:

• Same width oil supply and return gears as the stock aluminum pump
• S&S pinion and oil pump drive shaft drive gears increase potential oil volume delivery by 25% over stock on 1972 and earlier engines
• S&S pumps for 1936-'67 engines used with the S&S oil pump drive gears deliver 33% more oil than the original cast iron pump
• Machined with an oil pressure relief bleed off passageway - relieves pressure build up on top of the valve to maintain consistent oil pressure
• Oil pressure regulation bypass routes excess oil directly to the supply side of the pump- reduces the amount of oil returned to the tank, less foaming and cavitation
• The standard pump cover allows total flexibility for oil system configuration with a number of oil feed and return options
• Includes complete oil pump assembly, Mounting hardware, fittings and gaskets with instructions
• Pump with gear kits also include pinion shaft pump drive gear, oil pump drive shaft gear and breather gear

Note: 1181802 drill jig required. (sold separately)