Engine
8284 parts
Harley engine parts for Evo, Twin Cam, Milwaukee-Eight and Sportster motors. Jump to cams, big bore kits, heads, gaskets and seals or engine covers. Free US shipping over $100.
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Revolution Performance, Llc - RP4060VMF - Piston Ring Set
Revolution Performance
$69.95Revolution Performance, Llc - RP4060VMF - Piston Ring SetFeaturesrevolution performance logoGas nitride-coated rings offer the ultimate compatibility with nickel-silicon-carbide-plated...$69.95 -
Revolution Performance, Llc - RP3937VMF - Piston Ring Set
Revolution Performance
$69.95Revolution Performance, Llc - RP3937VMF - Piston Ring SetFeaturesrevolution performance logoGas nitride-coated rings offer the ultimate compatibility with nickel-silicon-carbide-plated...$69.95 -
S&S Cycle - 940-0014 - Replacement Piston Rings - 4.125" - Standard
S&S Cycle
$85.95S&S Cycle - 940-0014 - Replacement Piston Rings - 4.125" - StandardFeaturesReplacement ring sets for S&S pistons onlyRings come as sets for two pistonsMade in the USASpecs$85.95 -
S&S Cycle - 940-0013 - Replacement Piston Rings - 4.125" - +0.020"
S&S Cycle
$84.95S&S Cycle - 940-0013 - Replacement Piston Rings - 4.125" - +0.020"FeaturesReplacement ring sets for S&S pistons onlyRings come as sets for two pistonsMade in the USASpecs$84.95 -
S&S Cycle - 106-3709A - Replacement Piston Rings - 3.927" - Standard
S&S Cycle
$74.95S&S Cycle - 106-3709A - Replacement Piston Rings - 3.927" - StandardFeaturesReplacement ring sets for S&S pistons onlyRings come as sets for two pistonsMade in the USASpecs$74.95 -
S&S Cycle - 106-4422A - Replacement Piston Rings - 3.927" - +0.010"
S&S Cycle
$78.95S&S Cycle - 106-4422A - Replacement Piston Rings - 3.927" - +0.010"FeaturesReplacement ring sets for S&S pistons onlyRings come as sets for two pistonsMade in the USASpecs$78.95 -
S&S Cycle - 94-1200X - Replacement Piston Rings - 3.625" - Standard
S&S Cycle
MSRP: $61.95$54.95S&S Cycle - 94-1200X - Replacement Piston Rings - 3.625" - StandardFeaturesReplacement ring sets for S&S pistons onlyRings come as sets for two pistonsMade in the USASpecsMSRP: $61.95$54.95 -
S&S Cycle - 106-3964A - Piston Kit for Hot Set Up Kits® - +.020"
S&S Cycle
$617.95S&S Cycle - 106-3964A - Piston Kit for Hot Set Up Kits® - +.020"FeaturesPiston kit includes set of forged pistons, rings, wristpins, and clips for a complete motorWill fit up to a 4-5/8" strokeMade...$617.95 -
Permatex - 25238 - Right Stuff - Gray - 3 U.S. fl oz.
Permatex
$31.95Permatex - 25238 - Right Stuff - Gray - 3 U.S. fl oz.FeaturesSpecifically designed to perform under higher torque loads caused by engines with closely spaced bolt patternsSeals instantlyBlowout...$31.95 -
Permatex - 81878 - Silicone Gasket Maker - 3 oz. net wt.
Permatex
$12.35Permatex - 81878 - Silicone Gasket Maker - 3 oz. net wt.FeaturesMSDS Migration DataFor high operating temperaturesLow odor, noncorrosiveSuperior adhesionMore oil resistant than conventional...$12.35 -
Pc Racing - PCS1 - Flo® "Spin-on" Oil Filter - Gunmetal Gray
PC Racing
$159.95Pc Racing - PCS1 - Flo® "Spin-on" Oil Filter - Gunmetal GrayFeaturesFlows 7 times more than paper or synthetic filters while filtering to 35 microns (absolute, 1 pass test)Built-in 17 mm drilled hex...$159.95 -
Namz - NOSC-VO1-P - Oil Sending Unit Cover - Vertical - Milled - Polished
Namz Custom Cycle
$59.95Namz - NOSC-VO1-P - Oil Sending Unit Cover - Vertical - Milled - PolishedFeaturesFits over sensor and connectorMade from billet aluminumMade in the USASpecs<$59.95 -
Namz - NOSC-SO1-P - Oil Sending Unit Cover - Vertical - Smooth - Polished
Namz Custom Cycle
$59.95Namz - NOSC-SO1-P - Oil Sending Unit Cover - Vertical - Smooth - PolishedFeaturesFits over sensor and connectorMade from billet aluminumMade in the USASpecs<$59.95 -
Namz - NOSC-HO1-P - Oil Sending Unit Cover - Horizontal - Milled - Polished
Namz Custom Cycle
$59.95Namz - NOSC-HO1-P - Oil Sending Unit Cover - Horizontal - Milled - PolishedFeaturesFits over sensor and connectorMade from billet aluminumMade in the USASpecs$59.95 -
Namz - NOSC-VO1-B - Oil Sending Unit Cover - Vertical - Milled - Black
Namz Custom Cycle
$59.95Namz - NOSC-VO1-B - Oil Sending Unit Cover - Vertical - Milled - BlackFeaturesFits over sensor and connectorMade from billet aluminumMade in the USASpecs$59.95 -
Namz - NOSC-SO1-B - Oil Sending Unit Cover - Horizontal - Smooth - Black
Namz Custom Cycle
$59.95Namz - NOSC-SO1-B - Oil Sending Unit Cover - Horizontal - Smooth - BlackFeaturesFits over sensor and connectorMade from billet aluminumMade in the USASpecs$59.95 -
Namz - NOSC-HO1-B - Oil Sending Unit Cover - Horizontal - Milled - Black
Namz Custom Cycle
$59.95Namz - NOSC-HO1-B - Oil Sending Unit Cover - Horizontal - Milled - BlackFeaturesFits over sensor and connectorMade from billet aluminumMade in the USASpecs$59.95 -
Kibblewhite - 20-20830 - Valve Seal Installer - EVO
Kibblewhite
$8.58Kibblewhite - 20-20830 - Valve Seal Installer - EVOFeaturesReplacement seal installers for Valve Guide Seal Installation Tools setSpecs$8.58 -
Kibblewhite - 20-20835 - Valve Seal - Installation Tool - Set
Kibblewhite
$38.33Kibblewhite - 20-20835 - Valve Seal - Installation Tool - SetFeaturesPrecision fitment onto the seal OD to help the builder center the seal over the valve guide so that a few light strikes from a...$38.33 -
Lang Tools - 950 - Gasket Punch Hole - Set - 11-Piece
Lang Tools
$70.95Lang Tools - 950 - Gasket Punch Hole - Set - 11-PieceFeaturesTen punch sizes: 1/4\Designed to cut holes and internal radii in gaskets and other soft materialContains 11 pieces, 10 punches and one...$70.95 -
Kibblewhite - 20-21260 - Compression Release Valve - M10 - 1.250"
Kibblewhite
$49.71Kibblewhite - 20-21260 - Compression Release Valve - M10 - 1.250"FeaturesState-of-the-art design to help reduce hot start issues and starter/battery loadsHave 5-7 Newtons of closing force...$49.71 -
Kibblewhite - 20-21255 - Compression Release Valve - M10 - 1.380"
Kibblewhite
$49.71Kibblewhite - 20-21255 - Compression Release Valve - M10 - 1.380"FeaturesState-of-the-art design to help reduce hot start issues and starter/battery loadsHave 5-7 Newtons of closing force...$49.71 -
Kibblewhite - 20-21250 - Compression Release Valve - M10 - 1.050"
Kibblewhite
$49.71Kibblewhite - 20-21250 - Compression Release Valve - M10 - 1.050"FeaturesState-of-the-art design to help reduce hot start issues and starter/battery loadsHave 5-7 Newtons of closing force...$49.71 -
Kb Performance - KB426C.STD - Piston Kit - 3.750" Standard - 10.5:1 CR - 88" Twin Cam
KB Performance
$295.95Kb Performance - KB426C.STD - Piston Kit - 3.750" Standard - 10.5:1 CR - 88" Twin CamFeaturesManufactured from high-strength, T-5 heat-treated, 390 hypereutectic aluminum alloyAllows a tighter fit...$295.95 -
Kb Performance - KB426C.020 - Piston Kit - 3.750" +0.020" - 10.5:1 CR - 88" Twin Cam
KB Performance
$295.95Kb Performance - KB426C.020 - Piston Kit - 3.750" +0.020" - 10.5:1 CR - 88" Twin CamFeaturesManufactured from high-strength, T-5 heat-treated, 390 hypereutectic aluminum alloyAllows a tighter fit and...$295.95 -
Kb Performance - KB425C.030 - Piston Kit - 3.750" +0.030" - 8.8:1 CR - 88" Twin Cam
KB Performance
$287.95Kb Performance - KB425C.030 - Piston Kit - 3.750" +0.030" - 8.8:1 CR - 88" Twin CamFeaturesManufactured from high-strength, T-5 heat-treated, 390 hypereutectic aluminum alloyAllows a tighter fit and...$287.95 -
Kb Performance - KB425C.020 - Piston Kit - 3.750" +0.020" - 8.8:1 CR - 88" Twin Cam
KB Performance
$287.95Kb Performance - KB425C.020 - Piston Kit - 3.750" +0.020" - 8.8:1 CR - 88" Twin CamFeaturesManufactured from high-strength, T-5 heat-treated, 390 hypereutectic aluminum alloyAllows a tighter fit and...$287.95 -
Kb Performance - KB425C.010 - Piston Kit - 3.750" +0.010" - 8.8:1 CR - 88" Twin Cam
KB Performance
$287.95Kb Performance - KB425C.010 - Piston Kit - 3.750" +0.010" - 8.8:1 CR - 88" Twin CamFeaturesManufactured from high-strength, T-5 heat-treated, 390 hypereutectic aluminum alloyAllows a tighter fit and...$287.95 -
Hastings - 2M6164030 - Piston Rings - 3.498" + 0.030" - Evolution Big Twin
Hastings
$52.52Hastings - 2M6164030 - Piston Rings - 3.498" + 0.030" - Evolution Big TwinFeaturesIncludes top compression rings, second compression rings, and oil control ringsTop Compression Rings are Barrel...$52.52 -
Hastings - 2M6164020 - Piston Rings - 3.498" + 0.020" - Evolution Big Twin
Hastings
$55.21Hastings - 2M6164020 - Piston Rings - 3.498" + 0.020" - Evolution Big TwinFeaturesIncludes top compression rings, second compression rings, and oil control ringsTop Compression Rings are Barrel...$55.21 -
Hastings - 2M6164010 - Piston Rings - 3.498" + 0.010" - Evolution Big Twin
Hastings
$52.52Hastings - 2M6164010 - Piston Rings - 3.498" + 0.010" - Evolution Big TwinFeaturesIncludes top compression rings, second compression rings, and oil control ringsTop Compression Rings are Barrel...$52.52 -
Hastings - 2M6164 - Piston Rings - 3.498" Standard - Evolution Big Twin
Hastings
$52.52Hastings - 2M6164 - Piston Rings - 3.498" Standard - Evolution Big TwinFeaturesIncludes top compression rings, second compression rings, and oil control ringsTop Compression Rings are Barrel...$52.52 -
Hastings - 2M6127020 - Piston Rings - 3.498" + 0.020" - 80" Big Twin
Hastings
$87.21Hastings - 2M6127020 - Piston Rings - 3.498" + 0.020" - 80" Big TwinFeaturesIncludes top compression rings, second compression rings, and oil control ringsTop Compression Rings are Barrel FaceHelps...$87.21 -
Hastings - 2M6127040 - Piston Rings - 3.498" + 0.040" - 80" Big Twin
Hastings
$87.21Hastings - 2M6127040 - Piston Rings - 3.498" + 0.040" - 80" Big TwinFeaturesIncludes top compression rings, second compression rings, and oil control ringsTop Compression Rings are Barrel FaceHelps...$87.21 -
Hastings - 2M6127010 - Piston Rings - 3.498" + 0.010" - 80" Big Twin
Hastings
$87.21Hastings - 2M6127010 - Piston Rings - 3.498" + 0.010" - 80" Big TwinFeaturesIncludes top compression rings, second compression rings, and oil control ringsTop Compression Rings are Barrel FaceHelps...$87.21 -
Hastings - 2M6164005 - Piston Rings - 3.498" + 0.005" - Evolution Big Twin
Hastings
$52.52Hastings - 2M6164005 - Piston Rings - 3.498" + 0.005" - Evolution Big TwinFeaturesIncludes top compression rings, second compression rings, and oil control ringsTop Compression Rings are Barrel...$52.52 -
Jims - 2171 - Cam Cover Large O-Ring
Jims
MSRP: $16.95$16.75Jims - 2171 - Cam Cover Large O-RingFeaturesFits most cam coversMade in the U.S.A.SpecsRiding StyleMSRP: $16.95$16.75 -
Jims - 2170 - Cam Cover Small O-Ring
Jims
MSRP: $5.95$5.45Jims - 2170 - Cam Cover Small O-Ring Features Fits most cam covers Made in the U.S.A. SpecsMSRP: $5.95$5.45 -
Gardner-Westcott - 7-113PLN-2X1.5 - Oil Gauge Fitting - 1-1/2" Nipple - 1/8" NPT
Gardner-Westcott
$7.95Gardner-Westcott - 7-113PLN-2X1.5 - Oil Gauge Fitting - 1-1/2" Nipple - 1/8" NPTFeaturesOil Gauge fittings for 1/8" NPTSpecs$7.95 -
Gardner-Westcott - 7-100PE-2 - Oil Gauge Elbow Fitting - 1/8" NPT - 90°
Gardner-Westcott
$14.95Gardner-Westcott - 7-100PE-2 - Oil Gauge Elbow Fitting - 1/8" NPT - 90 FeaturesOil Gauge fittings for 1/8" NPTSpecs$14.95
About Engine
Harley Engine Parts for Rebuilds and Performance
From a fresh gasket set to a full big bore build, we stock the Harley engine parts you need to rebuild, maintain or wake up your motor. Match parts to your engine: Evo, Twin Cam, Milwaukee-Eight and Sportster parts don't swap across.
Shop Engine Parts
- Camshafts
- Big bore kits
- Cylinders
- Heads
- Pushrods
- Lifters
- Rockers
- Gaskets & seals
- Oil pumps
- Oil filters
- Motor mounts
- Engine covers
We carry engine parts from S&S Cycle, Drag Specialties, V-Twin Mfg, Alloy Art, HardDrive and Rocker Lockers. Pair your build with an air cleaner and exhaust that let it breathe.
Not Sure It Fits?
Year, model and engine all matter, and plenty of parts look the same but aren't. If you can't tell whether something fits your bike, hit us up with your year and model and we'll check it before you order.