Direct replacement for the stock pinion gear nut.
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Precision billet oil pump kit with universal cover and multiple feed options. Accepts 3/8" rubber oil lines. Rebuild kit sold separately.
Complete billet oil pump kit with universal cover, gears, drive shaft, pressure relief valve, fittings and gaskets. Accepts 3/8" rubber oil lines. Rebuild kit sold separately.
Complete master rebuild kit with precision components and seals; made in the U.S.A.
OEM replacement NPT plug for Big Twin/XL oil pumps.
45° pipe fitting for oil and breather line connections. Used on big twin crankcase flywheel cavity breather lines.
One-way check ball for oil pump applications on Harley Davidson models. Helps maintain proper oil pressure.
High-quality cast aluminum oil pump assembly with steel gears; gaskets and seals included.
Replacement oil pump drive shaft for Big Twin models. Direct-fit, precision machined.
Replacement check valve spring for oil pumps on Big Twin models. Made in the United States.
OEM replacement return plug for oil pumps. Precision-machined for a secure seal and reliable return flow.
- High-flow 2.250" chrome moly gerotor gears for increased oil volume
- Precision-machined relief valve; bench tested to seat at 30 psi, pop-off 55–60 psi
- 42% more scavenge volume and 68% more oil to bearings versus stock
- Magnet protection and corrected passages to reduce wet sumping and blow-by
- Requires matching high-flow cam plate (part #0932-0192) for optimized scavenge
Precision-machined oil system packs for M8 engines that increase oil flow, scavenge volume and pressure while reducing temperatures and wet sumping. Includes pump, lifters, high-flow camplate and installation kit.
Replacement spring and plunger assembly for oil pump pressure relief valve — increases pop‑off psi and restores proper bypass control. Bench‑test with PART #3801-0071.
Increases feed and scavenge capacity for M8 fourth generation engines; fits air-cooled models only.
Independent scavenge sections for flywheel and cam chest, debris screens, increased flow, adjustable relief valve, removable passage plugs for serviceability.
Independent scavenge sections, debris screens, magnet-protected cam chest, adjustable pressure relief, and increased flow capacity for dependable oil management.
Billet-aluminum cam plate with blue anodized finish. Removable passage plugs for servicing. Made in the United States.