S&S CYCLE Oil Pump Kit — S&S CYCLE, 31-6214 – 84-91 Touring, 85-91 Softail, 91 Dyna, 84-86 Big Twin, 84-91 FXR

HVHP oil pump kit engineered to increase oil volume for both supply and return sides, improving engine lubrication and scavenging. 🔧 The kit balances higher flow with reliable return capacity to reduce oil in the crankcase breather. 🛠️

• New gear tooth profile with fewer, larger teeth to deliver increased oil volume on supply and return.
• Supply-side gears are 9% wider than stock for higher flow.
• Return gears are 28% wider than stock to ensure the extra supplied oil is scavenged and returned to the tank.
• Available in universal and standard styles: the universal style offers multiple oil feed and return options for custom installations; the standard style uses 92-99 style oil line hookups.
• Offered as a complete kit or as oil pump only.

Kit contents

• Supply gears and return gears
• Drive shaft, drive shaft keys, and drive shaft snap rings
• Check ball and check ball spring, pressure valve spring
• Cover screws with O-rings, miscellaneous hose fittings, plugs, screws, gaskets, and mounting hardware
• Oil pump drive shaft gear and oil pump pinion shaft gear
• S&S breather gear and shim kit
• Instructions

Oil pump only contents

• Supply gears and return gears
• Drive shaft keys and drive shaft snap rings
• Check ball and check ball spring, pressure valve spring
• Cover screws with O-rings, miscellaneous hose fittings, plugs, screws, gaskets, mounting hardware
• Instructions