Engine
7737 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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Hastings - 2M4805005 - Piston Rings - 3.750" + 0.005" - 96" Twin Cam
Hastings
$107.08Hastings - 2M4805005 - Piston Rings - 3.750" + 0.005" - 96" Twin CamFeaturesIncludes top compression rings, second compression rings, and oil control ringsTop Compression Rings are Barrel FaceHelps...$107.08 -
Hastings - 2M5069 - Piston Rings - 3.000" Standard - 883 XL Evolution
Hastings
$46.17Hastings - 2M5069 - Piston Rings - 3.000" Standard - 883 XL EvolutionFeaturesIncludes top compression rings, second compression rings, and oil control ringsTop Compression Rings are Barrel FaceHelps...$46.17 -
Hastings - 2C5231 - Piston Rings - 107" Motor - 3.937" Standard - M8
Hastings
$80.88Hastings - 2C5231 - Piston Rings - 107" Motor - 3.937" Standard - M8FeaturesIncludes top compression rings, second compression rings, and oil control ringsTop compression rings are Barrel FaceCoated...$80.88 -
Hastings - 2M4805010 - Piston Rings - 3.750" + 0.010" - 96" Twin Cam
Hastings
$112.53Hastings - 2M4805010 - Piston Rings - 3.750" + 0.010" - 96" Twin CamFeaturesIncludes top compression rings, second compression rings, and oil control ringsTop Compression Rings are Barrel FaceHelps...$112.53 -
Je Pistons - 391730 - Piston Kit - 4.320" - M8
Je Pistons
$729.99Je Pistons - 391730 - Piston Kit - 4.320" - M8FeaturesPropriety aligned grain flow forging technology for maximum tensile strength suited for high performance enviromentCermic crown coating protects...$729.99 -
Jagg Oil Coolers - 751-FP2600-0323 - Fan-Assisted Oil Cooler Kit - Vertical - Fits 1999-2016 Dresser (except Twin-Cooled models), 2000-2017 Softail; 1984-1998 FLT/FLHT/FLHR/FLTR, 1984-1999 FXST/FLST and 1991-1998 FXD
Jagg Oil Coolers
$574.95Jagg Oil Coolers - 751-FP2600-0323 - Fan-Assisted Oil Cooler Kit - VerticalFeaturesDesigned to perform as well at low speeds and stop-and-go traffic as on the open highwayIncludes cooler,...$574.95 -
Jagg Oil Coolers - 4702 - Oil Filter Adapter - Offset
Jagg Oil Coolers
$170.95Jagg Oil Coolers - 4702 - Oil Filter Adapter - OffsetFeaturesAutomatic thermostatic oil bypass valve allows oil to bypass the oil cooler until reaching operating temperature for faster vehicle...$170.95 -
Jagg Oil Coolers - AK4700-VRF - Viscosity Regulated Flow Actuator Kit
Jagg Oil Coolers
$15.95Jagg Oil Coolers - AK4700-VRF - Viscosity Regulated Flow Actuator KitFeaturesReplaces thermostatic actuator element in offset oil filter adapter with new Viscosity Regulated Flow (VRF) actuatorAfter...$15.95 -
Jagg Oil Coolers - 4500 - Oil Filter Adapter - Big Twin/Sportster
Jagg Oil Coolers
$129.95Jagg Oil Coolers - 4500 - Oil Filter Adapter - Big Twin/SportsterFeaturesMachined with sweeping internal flow passages for optimal flow characteristics from billet aluminum and anodized with a...$129.95 -
Je Pistons - 394140 - Piston Kit - 4.320" - M8
Je Pistons
$729.99Je Pistons - 394140 - Piston Kit - 4.320" - M8FeaturesPropriety aligned grain flow forging technology for maximum tensile strength suited for high performance enviromentCermic crown coating protects...$729.99 -
Je Pistons - 391731 - Piston Kit - 4.250" - M8
Je Pistons
MSRP: $694.99$682.99Je Pistons - 391731 - Piston Kit - 4.250" - M8FeaturesPropriety aligned grain flow forging technology for maximum tensile strength suited for high performance enviromentCermic crown coating protects...MSRP: $694.99$682.99 -
Je Pistons - 394138 - Piston Kit - 4.250" - M8
Je Pistons
$729.99Je Pistons - 394138 - Piston Kit - 4.250" - M8FeaturesPropriety aligned grain flow forging technology for maximum tensile strength suited for high performance enviromentCermic crown coating protects...$729.99 -
Je Pistons - 394100 - Piston Kit - 4.310" - M8
Je Pistons
$729.99Je Pistons - 394100 - Piston Kit - 4.310" - M8FeaturesPropriety aligned grain flow forging technology for maximum tensile strength suited for high performance enviromentCermic crown coating protects...$729.99 -
Je Pistons - 370252 - Piston Kit - M8
Je Pistons
$472.99Je Pistons - 370252 - Piston Kit - M8FeaturesForged from 2618-T6 aluminum for better aligned grain flow and higher tensile strengthSkirt coating aids in optimal break-in for performance...$472.99 -
Je Pistons - 370251 - Piston Kit - M8
Je Pistons
$472.99Je Pistons - 370251 - Piston Kit - M8FeaturesForged from 2618-T6 aluminum for better aligned grain flow and higher tensile strengthSkirt coating aids in optimal break-in for performance...$472.99 -
Je Pistons - 370246 - Piston Kit - M8
Je Pistons
$472.99Je Pistons - 370246 - Piston Kit - M8FeaturesForged from 2618-T6 aluminum for better aligned grain flow and higher tensile strengthSkirt coating aids in optimal break-in for performance...$472.99 -
Je Pistons - 370244 - Piston Kit - M8
Je Pistons
$472.99Je Pistons - 370244 - Piston Kit - M8FeaturesForged from 2618-T6 aluminum for better aligned grain flow and higher tensile strengthSkirt coating aids in optimal break-in for performance...$472.99 -
Je Pistons - 370250 - Piston Kit - M8
Je Pistons
$472.99Je Pistons - 370250 - Piston Kit - M8FeaturesForged from 2618-T6 aluminum for better aligned grain flow and higher tensile strengthSkirt coating aids in optimal break-in for performance...$472.99 -
Je Pistons - 370249 - Piston Kit - M8
Je Pistons
$472.99Je Pistons - 370249 - Piston Kit - M8FeaturesForged from 2618-T6 aluminum for better aligned grain flow and higher tensile strengthSkirt coating aids in optimal break-in for performance...$472.99 -
Je Pistons - 370247 - Piston Kit - M8
Je Pistons
$472.99Je Pistons - 370247 - Piston Kit - M8FeaturesForged from 2618-T6 aluminum for better aligned grain flow and higher tensile strengthSkirt coating aids in optimal break-in for performance...$472.99 -
Je Pistons - 324722 - Piston Kit - 98" - Twin Cam
Je Pistons
$472.99Je Pistons - 324722 - Piston Kit - 98" - Twin CamFeaturesMachined from 2618-T6 high-tensile forged aluminumDome/dish features smooth flowing radii; requires no deburring or preparationJE designs are...$472.99 -
Je Pistons - 324720 - Piston Kit - 95" - Twin Cam
Je Pistons
$472.99Je Pistons - 324720 - Piston Kit - 95" - Twin CamFeaturesMachined from 2618-T6 high-tensile forged aluminumDome/dish features smooth flowing radii; requires no deburring or preparationJE designs are...$472.99 -
Je Pistons - 317212 - Piston Kit - 107" - Twin Cam
Je Pistons
$545.99Je Pistons - 317212 - Piston Kit - 107" - Twin CamFeaturesMachined from 2618-T6 high-tensile forged aluminumDome/dish features smooth flowing radii; requires no deburring or preparationJE designs are...$545.99 -
Je Pistons - 324716 - Piston Kit - 95" - Twin Cam
Je Pistons
$472.99Je Pistons - 324716 - Piston Kit - 95" - Twin CamFeaturesMachined from 2618-T6 high-tensile forged aluminumDome/dish features smooth flowing radii; requires no deburring or preparationJE designs are...$472.99 -
Je Pistons - 317211 - Piston Kit - 107" - Twin Cam
Je Pistons
$545.99Je Pistons - 317211 - Piston Kit - 107" - Twin CamFeaturesMachined from 2618-T6 high-tensile forged aluminumDome/dish features smooth flowing radii; requires no deburring or preparationJE designs are...$545.99 -
Hiflofiltro - HF174B - Oil Filter - Black
Hiflofiltro
$8.74Hiflofiltro - HF174B - Oil Filter - BlackFeaturesThe original HifloFiltro® factory was founded in 1955 and has been manufacturing filters for the OEM motor industry since 1963With the experience of...$8.74 -
K & N - KN-174B - Oil Filter - Black
K&N
$17.99K & N - KN-174B - Oil Filter - BlackFeaturesK&N delivers a premium oil filter which is built with a synthetic media specifically designed to withstand the high concentrates of synthetic racing oilsA...$17.99 -
Hiflofiltro - HF175 - Oil Filter
Hiflofiltro
$8.74Hiflofiltro - HF175 - Oil FilterFeaturesGlobal Trade Item Number: 824225110753Provides unbeatable performance and exceptional value, Hiflo filters are the best-selling brand of aftermarket filters...$8.74 -
Hiflofiltro - HF171CRC - Performance Oil Filter - Chrome
Hiflofiltro
$13.76Hiflofiltro - HF171CRC - Performance Oil Filter - ChromeFeaturesHeavy-duty steel casing features a pre-drilled welded hex nut for easy removal and installationPerformance filters feature premium high...$13.76 -
Hiflofiltro - HF170CRC - Performance Oil Filter - Chrome
Hiflofiltro
$13.76Hiflofiltro - HF170CRC - Performance Oil Filter - ChromeFeaturesHeavy-duty steel casing features a pre-drilled welded hex nut for easy removal and installationPerformance filters feature premium high...$13.76 -
Hiflofiltro - HF171BRC - Performance Oil Filter - Black
Hiflofiltro
$10.21Hiflofiltro - HF171BRC - Performance Oil Filter - BlackFeaturesHeavy-duty steel casing features a pre-drilled welded hex nut for easy removal and installationPerformance filters feature premium high...$10.21 -
K & N - KN-564 - Performance Oil Filter - Buell/Can-Am
K&N
$15.99K & N - KN-564 - Performance Oil Filter - Buell/Can-AmFeaturesK&N delivers a premium oil filter which is built with a synthetic media specifically designed to withstand the high concentrates of...$15.99 -
Feuling Parts - 2022 - Offset Oil Filter Mount - Black
Feuling
$179.95Feuling Parts - 2022 - Offset Oil Filter Mount - BlackFeaturesSandwich-style mounts allow easy hook-up of any style remote oil cooler or additional oil filter set upDesigned with pressure relief...$179.95 -
Hiflofiltro - HF177 - Oil Filter - Black
Hiflofiltro
$9.11Hiflofiltro - HF177 - Oil Filter - BlackFeaturesThe original HifloFiltro® factory was founded in 1955 and has been manufacturing filters for the OEM motor industry since 1963With the experience of...$9.11 -
Hiflofiltro - HF564 - Oil Filter
Hiflofiltro
$9.89Hiflofiltro - HF564 - Oil FilterFeaturesGlobal Trade Item Number: 824225111385Provides unbeatable performance and exceptional value, Hiflo filters are the best-selling brand of aftermarket filters...$9.89 -
Horsepower, Inc - HPI-OC-1 - Oil Filter Mount - Polished - Fits 1999-2006 Twin Cam "A" motors (except 06 Dyna)
Horsepower, Inc
$169.95Horsepower, Inc - HPI-OC-1 - Oil Filter Mount - PolishedFeatures6061 billet aluminum construction with a polished finishOptimized oil passages flow almost 30% more efficiently than others on the...$169.95 -
K & N - KN-177 - Oil Filter - Black
K&N
$17.99K & N - KN-177 - Oil Filter - BlackFeaturesK&N delivers a premium oil filter which is built with a synthetic media specifically designed to withstand the high concentrates of synthetic racing oilsA...$17.99 -
Feuling Parts - 3088 - Vented Dipstick - Black - M8 Touring/Trike
Feuling
$299.95Feuling Parts - 3088 - Vented Dipstick - Black - M8 Touring/Trike Features Billet dipsticks vent/breathe excessive crank case pressure from the oil tank through a PCV style breather, consisting...$299.95 -
Dakota Digital - SEN-1043 - Oil Temperature Sending Unit - 1/8" NPT
Dakota Digital
$35.00Dakota Digital - SEN-1043 - Oil Temperature Sending Unit - 1/8" NPTFeaturesOil temperature sensor screws into crankcase, oil reserve tank, or oil lineDrilling and tapping may be required to fit...$35.00 -
Eastern Motorcycle Parts - A-37090-98 - Left Pushrod End - Fits 1999-2016 FLT/FLHT/FLHX/FLHR/FLTR, 2000-2025 Softail and 1999-2017 Dyna w/ mechanical clutch (2.255"); repl. OEM #37090-98 COVERS &; 1998 FLT/FXD/FXDWG, 1998-1999 FXST/FLST
Eastern Motorcycle Parts
$24.95Eastern Motorcycle Parts - A-37090-98 - Left Pushrod EndFeaturesMade in the U.S.A.Replacement Part for OEM Number(s): 3709098Specs$24.95
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.