- 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
- Machined with an oil pressure relief bleed off passageway & relieves pressure build up on top of the valve to maintain consistent oil pressure
- S&S pinion and oil pump drive shaft drive gears increase potential oil volume delivery by 25 percent over stock on 1972 and earlier engines
- The standard pump cover allows total flexibility for oil system configuration with a number of oil feed and return options
- Same width oil supply and return gears as the stock HD® aluminum pump
The S&S Cycle Part Number 31-6203 Billet Oil Pump Kit is designed to enhance oil circulation and pressure regulation in Harley Davidson models from 1970 to 1991. Crafted with precision machined components, this pump kit features an oil pressure regulation bypass that routes excess oil directly back to the supply side of the pump, reducing foaming and cavitation for improved engine lubrication and performance. The integrated relief bleed-off passage maintains consistent oil pressure by relieving pressure build-up on top of the valve, ensuring reliable operation under demanding conditions. Built with S&S pinion and oil pump drive gears, this kit increases potential oil volume delivery by 25% over stock units on 1972 and earlier engines, supporting higher performance applications. The standard pump cover offers versatile configuration options for oil feed and return, accommodating various custom setups. It maintains the same width oil supply and return gears as the original Harley Davidson aluminum pump, ensuring compatibility and reliable operation. Suitable for a wide range of Harley Softail models from 1990 to 1991, this kit is a valuable upgrade for riders seeking improved lubrication and engine longevity. Manufactured by S&S Cycle, a trusted name in powersports performance, the kit combines durability, efficiency, and flexibility, making it a practical choice for both restoration and performance enhancement projects.
Features:
- Oil pressure regulation bypass routes excess oil directly to the supply side of the pump, reducing foaming and cavitation
- Machined with an oil pressure relief bleed-off passage to maintain consistent oil pressure
- S&S pinion and oil pump drive gears increase potential oil volume delivery by 25% over stock on 1972 and earlier engines
- Standard pump cover allows flexible oil system configuration with multiple feed and return options
- Same width oil supply and return gears as stock Harley Davidson aluminum pump
