Oil Pumps Complete

Authentic reproduction of the outside mounted hand oil pump plunger and pump body for vintage racing oil tanks. Needs to be soft soldered to the tank side. Correct for Harley-Davidson models but can be fitted on other brands, too. Comes complete with oil line fitting and both ball valves.

Reproductions of the hand oil pump plungers and the oil pump valve.

Reproduction of the early Knucklehead cast iron oil pump as used by the factory 1936-1940, however, the pump will fit all Knuckles and even early Panheads (with solid lifters). It comes un-assembled with all gears, check valve and bypass valve.

On Harley-Davidson Flathead engines, such as the UL and WL models, the engine can overheat under heavy load because the flow rate and pressure of the original oil pump are limited. The CHP high-performance oil pump solves this problem: it retains the classic stock pump design but works internally with modern gerotor technology, significantly improving the efficiency of the lubrication system.
Typical oil pressure on a hot engine: approx. 30 psi (instead of 5 psi with the stock pump), Flow rate: approx. 1 liter in 45 seconds (instead of 7–10 minutes with the original pump),
The result is a cooler, smoother-running engine that is reliably lubricated even with performance upgrades. Installation is simple, identical to the original pump, so no additional modifications are required.

The CHP return pump is the ideal complement to the CHP high-performance oil pump, designed to balance its increased flow rate. With wider gears, the return capacity is increased by about 40%, ensuring more efficient oil circulation within the engine.
The pump is fully compatible with original Harley-Davidson feed pumps and can therefore also be used in stock configurations. Installation is identical to the original pump, with no additional modifications required.
The Big Twin version features a 10° angled fitting, allowing the oil line to route neatly past the frame — especially useful in tight installation spaces.

With the CHP pump installed oil feed volume is substantialy increased and the stock scavenger system might reach its limit. This conversion kit for the scavenger pump raises volume by about 40% for a more effective oil return. It includes all necessary longer small parts.

Reproductions of the cast-iron oil pumps for Harley-Davidson Big Twin models from 1941 to 1967 (Knucklehead, Panhead, and Early Shovelhead engines). The version up to 1949 has been upgraded with the wider .38” mm feed gears used in pumps from 1950 onward, providing increased oil flow. Delivery is fully pre-assembled.

Reproductions of the aluminum oil pumps for 1200 and 1340 Shovelhead and Evolution Harley-Davidson models from 1973–1999. The pump channeling from 1973 onward was changed compared to the earlier models from 1968 and made more efficient. Delivery is complete and pre-assembled, including all gears, drive shaft, check valve, bypass valve, and gaskets. A very high-quality replacement for the original and for anyone who finds the appearance of an S&S oil pump too “polished.”

Stock replacement oil pumps for K models and Sportster 1952-1976.

Stock replacement oil pumps as used on Sportster models 1977-2020.

Complete oil pump assemblies to solve oil supply problems on all Harley-Davidson OHV Big Twin engines from Knucklehead to Evolution. Can be used to update bikes with earlier cast iron pumps or as a direct replacement on later models with aluminum pumps. The pump body is CNC machined from billet aluminum which enhances the overall appearance of any engine. Compared to 1936-67 pumps the S&S product delivers 33% more oil. For maximum versatility they feature various fittings to either duplicate the original oil line routing or tailor one to suit custom requirements. Installations on engines from 1936–69 are strictly bolt-on, also engines 1981-up require no modifications. Other crankcase year groups require a simple drilling or plugging step. For this purpose a special metal drill jig is required and available.

The S&S High Volume High Pressure (HVHP) billet oil pump is a high capacity pump that was designed for the S&S Super Sidewinder Plus Engines. The SSW+ engines feature piston cooling jets that spray oil on the underside of the pistons. In order to supply enough oil for the cooling jets in addition to the oil requirements of the rest of the engine, a more efficient pump was needed. Although the HVHP oil pumps are very similar in appearance to the standard S&S billet pumps, there are several important differences.
Special design features: A new tooth profile with fewer, but larger teeth, provides increased oil volume for both supply and return sides of the pump., Supply gears are 9% wider than stock or standard S&S oil pumps to give the HVHP pump even more oil capacity., Return gears are 28% wider than stock or standard S&S pumps to insure that the additional volume of oil supplied to the engine is scavenged and returned to the oil tank, preventing oil carry over from the crankcase breather., In spite of wider supply and return gears, the HVHP pump is no thicker than stock and uses the stock oil pump drive shaft. , The universal cover has a number of oil feed and return options allowing maximum flexibility for customized installations., Each pump includes supply and return gears, drive shaft, snap rings, miscellaneous hose fittings, gaskets and mounting hardware.,

The Daytona performance oil pumps are a great and economic replacement for worn or damaged tired stock pumps. They deliver more pressure and volume on both the oil feed and oil discharge side.