S&S Cycle · New
S&S Cycle 84-91 BT High Volume High Pressure Oil Pump Kit w/ Gears
MPN 31-6307 · Store SKU ssc31-6307
Supplier stock checked 11/7/2026, 12:49:18 PM UTC. Adding a part does not reserve it.
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Product details
Originally designed for S&S® 4 1/8 bore V-Series engines with piston oiler jets, these high volume high pressure oil pumps also work well in stock HD® Evolution® engines and S&S® V-Series engines. Fits 1984-'91 HD® Big Twins. No thicker than a stock pump. Gears with fewer, but larger teeth provide increased oil volume for both supply and return sides of the pump. Supply gears are 9 percent wider than stock and standard S&S® oil pumps. 28 percent wider than stock return gears ensure proper crankcase scavenging, reduce drag on the flywheels, and eliminate oil carryover. Polished Billet Finish. Increased scavenging capacity results in Less oil in the crankcase, Less oil carryover, Excess oil from pressure control valve is filtered & longer pump life. Equipped with a stock length oil pump drive shaft. Pump Kit
Manufacturer fitment & guides
Check 31-6307 against the manufacturer’s application information below.
A manufacturer application guide is not available for this listing. Request the exact application from JuiceBuilt before payment.
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