Engine
8832 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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Cometic - C9745 - Head Gasket - 3.750" x .040" - 88"/96" - '99-'13 Twin Cam
Cometic
$61.90Cometic - C9745 - Head Gasket - 3.750" x .040" - 88"/96" - '99-'13 Twin CamFeaturesHigh-quality products for long-term reliabilityManufactured from premium fuel-resistant materials that will not...$61.90 -
Cometic - C9722 - Head Gasket - 3.875" x .040" - 95"/103" - '99-'16 Twin Cam
Cometic
$61.90Cometic - C9722 - Head Gasket - 3.875" x .040" - 95"/103" - '99-'16 Twin CamFeaturesHigh-quality products for long-term reliabilityManufactured from premium fuel-resistant materials that will not...$61.90 -
Cometic - C9690 - Head Gasket - 3.625" x .030" - '84-'99 EVO
Cometic
$61.90Cometic - C9690 - Head Gasket - 3.625" x .030" - '84-'99 EVOFeaturesHigh-quality products for long-term reliabilityManufactured from premium fuel-resistant materials that will not creep, crack or...$61.90 -
Cometic - C9689 - Head Gasket - Standard - 3.500" x .040" - '84-'99 EVO/'88-'22 XL 1200
Cometic
$61.90Cometic - C9689 - Head Gasket - Standard - 3.500" x .040" - '84-'99 EVO/'88-'22 XL 1200FeaturesHigh-quality products for long-term reliabilityManufactured from premium fuel-resistant materials that...$61.90 -
Cometic - C9691 - Head Gasket - 3.625" x .040" - '84-'99 EVO
Cometic
$61.90Cometic - C9691 - Head Gasket - 3.625" x .040" - '84-'99 EVOFeaturesHigh-quality products for long-term reliabilityManufactured from premium fuel-resistant materials that will not creep, crack or...$61.90 -
Cometic - C9780 - Top End Gasket Kit - 95" - Twin Cam - EST
Cometic
$181.60Cometic - C9780 - Top End Gasket Kit - 95" - Twin Cam - ESTFeaturesEST (Extreme Sealing Technology) gasket kit includes embossed stainless steel head, base, and rocker gaskets covered with a...$181.60 -
Cometic - C9779 - Top End Gasket Kit - Twin Cam 88 - EST
Cometic
$183.70Cometic - C9779 - Top End Gasket Kit - Twin Cam 88 - ESTFeaturesEST (Extreme Sealing Technology) gasket kit includes embossed stainless steel head, base, and rocker gaskets covered with a proprietary...$183.70 -
Cometic - C9635 - Top End Gasket - Big Twin - EST
Cometic
$142.75Cometic - C9635 - Top End Gasket - Big Twin - ESTFeaturesEST (Extreme Sealing Technology) gasket kit includes embossed stainless steel head, base, and rocker gaskets covered with a proprietary rubber...$142.75 -
Ciro - 70026 - Caps - Engine/Bolt/Cover - Fluted/Spike - Black - Twin Cam
Ciro
$69.99Ciro - 70026 - Caps - Engine/Bolt/Cover - Fluted/Spike - Black - Twin CamFeaturesMade from strong ABS composite that is designed to handle the engine heat and to be removed and reinstalled when...$69.99 -
Ciro - 70025 - Caps - Engine/Bolt/Cover - Crown/Diamond-Cut - Black - Twin Cam
Ciro
$74.99Ciro - 70025 - Caps - Engine/Bolt/Cover - Crown/Diamond-Cut - Black - Twin CamFeaturesMade from strong ABS composite that is designed to handle the engine heat and to be removed and reinstalled when...$74.99 -
Ciro - 70021 - Caps - Engine/Bolt/Cover - Crown/Diamond-Cut - Chrome - M8
Ciro
$74.99Ciro - 70021 - Caps - Engine/Bolt/Cover - Crown/Diamond-Cut - Chrome - M8FeaturesMade from strong ABS composite that is designed to handle the engine heat and to be removed and reinstalled when...$74.99 -
Ciro - 70023 - Caps - Engine/Bolt/Cover - Fluted/Spike - Chrome - M8
Ciro
$69.99Ciro - 70023 - Caps - Engine/Bolt/Cover - Fluted/Spike - Chrome - M8FeaturesMade from strong ABS composite that is designed to handle the engine heat and to be removed and reinstalled when...$69.99 -
Ciro - 70022 - Caps - Engine/Bolt/Cover - Crown/Diamond-Cut - Black - M8
Ciro
$74.99Ciro - 70022 - Caps - Engine/Bolt/Cover - Crown/Diamond-Cut - Black - M8FeaturesMade from strong ABS composite that is designed to handle the engine heat and to be removed and reinstalled when...$74.99 -
Ciro - 70008 - Caps - Rocker Box/Bolt - Peaked - Black
Ciro
$39.99Ciro - 70008 - Caps - Rocker Box/Bolt - Peaked - BlackFeaturesPrecision fit and simple press-on installationCover up old, dull or rusty boltsMade from stamped steelFor Twin Cam engines.Specs$39.99 -
Cometic - C9328F5 - Cam Cover Gasket - Big Twin
Cometic
$11.50Cometic - C9328F5 - Cam Cover Gasket - Big TwinFeaturesHigh-quality products for long-term reliabilityGaskets available in multiple types to best suit the intended applicationManufactured from...$11.50 -
Cometic - C10189 - Breather Assembly O-Ring
Cometic
$3.10Cometic - C10189 - Breather Assembly O-RingFeaturesManufactured from premium fuel-resistant materials that will not creep, crack or become brittleMade in the U.S.A.Replacement Part for OEM Number(s):...$3.10 -
Covingtons - C3082-B - Valve Cover - Diamondback - Black - M8
Covington's Customs
$1,641.95Covingtons - C3082-B - Valve Cover - Diamondback - Black - M8FeaturesCNC machined billet aluminumValve Cover for M8 enginesMade in the USASpecs$1,641.95 -
Covingtons - C3082-C - Valve Cover - Diamondback - Chrome - M8
Covington's Customs
$1,641.95Covingtons - C3082-C - Valve Cover - Diamondback - Chrome - M8FeaturesCNC machined billet aluminumValve Cover for M8 enginesMade in the USASpecs$1,641.95 -
Covingtons - C1292-B - Rocker Box Cover - Dimpled Black - Twin Cam
Covington's Customs
$823.95Covingtons - C1292-B - Rocker Box Cover - Dimpled Black - Twin CamFeaturesReplaces OEM topCNC-machined billet aluminumIncludes gaskets and hardwareMade in the USASpecs$823.95 -
Covingtons - C1286-C - Valve Cover - Smooth - Chrome - M8
Covington's Customs
$1,514.95Covingtons - C1286-C - Valve Cover - Smooth - Chrome - M8FeaturesCNC machined billet aluminumValve Cover for M8 enginesMade in the USASpecs$1,514.95 -
Ciro - 73051 - Front Engine Stabilizer Link Cover - Fits 2009-2024 FLHT/FLHR/FLHX/FLTR
Ciro
$33.99Ciro - 73051 - Front Engine Stabilizer Link CoverFeaturesQuick and easy installationClean and classic lookBlack powdercoated aluminum will provide an easy-to-clean, long-lasting finishKeeps the...$33.99 -
Covingtons - C1283-C - Rocker Box Valve Covers - Smooth Chrome - Twin Cam
Covington's Customs
$1,140.95Covingtons - C1283-C - Rocker Box Valve Covers - Smooth Chrome - Twin CamFeaturesCNC-machined billet aluminum constructionMeasure approximately 2-3/4" tallSold in pairsMade in the USASpecs$1,140.95 -
Cometic - C10232 - Muffler Gasket - M8/FXST/XL
Cometic
$41.95Cometic - C10232 - Muffler Gasket - M8/FXST/XL Features High-quality products for long-term reliability Manufactured from premium fuel-resistant materials that will not creep, crack or become...$41.95 -
Cometic - C10362 - Head Gasket - 0.024"
Cometic
$86.05Cometic - C10362 - Head Gasket - 0.024"FeaturesHigh-quality products for long-term reliabilityManufactured from premium fuel-resistant materials that will not creep, crack or become...$86.05 -
Cometic - C10362-HB - Cylinder Head/Base Gasket Kit
Cometic
$134.35Cometic - C10362-HB - Cylinder Head/Base Gasket KitFeaturesContains a pair of 106 mm bore MLX Multi layer steel with stopper layer head gaskets, and a pair of Single Layer Steel (SLS) base gaskets...$134.35 -
Cometic - C10361 - Base Gasket - 0.010"
Cometic
$49.30Cometic - C10361 - Base Gasket - 0.010"FeaturesHigh quality products for long-term reliabilityManufactured from premium fuel-resistant materialsViton gaskets feature a stainless steel core with a ...$49.30 -
Cometic - C10358-036 - Head Gasket - 4.125" - .036" - MLX - Twin Cam
Cometic
$86.05Cometic - C10358-036 - Head Gasket - 4.125" - .036" - MLX - Twin CamFeaturesManufactured from premium fuel-resistant materials that will not creep, crack or become brittle4.125" big bore is a popular...$86.05 -
Cometic - C10358-032 - Head Gasket - 4.125" - .032" - MLX - Twin Cam
Cometic
$86.05Cometic - C10358-032 - Head Gasket - 4.125" - .032" - MLX - Twin CamFeaturesManufactured from premium fuel-resistant materials that will not creep, crack or become brittle4.125" big bore is a popular...$86.05 -
Cometic - C10348-036 - Head Gasket - 4.500" x 0.036" - M8
Cometic
$86.05Cometic - C10348-036 - Head Gasket - 4.500" x 0.036" - M8FeaturesMLX Gasket (Multi-Layer-Xtreme) features an extra “stopper” fold-over layer providing a torque limiting surface that prevents yielding...$86.05 -
Cometic - C10347-036 - Head Gasket - 4.430" x 0.036" - M8
Cometic
$86.05Cometic - C10347-036 - Head Gasket - 4.430" x 0.036" - M8FeaturesMLX Gasket (Multi-Layer-Xtreme) features an extra “stopper” fold-over layer providing a torque limiting surface that prevents yielding...$86.05 -
Cometic - C10336-040 - Head Gasket - 4.320" x 0.040" - M8
Cometic
$86.05Cometic - C10336-040 - Head Gasket - 4.320" x 0.040" - M8FeaturesMLX Gasket (Multi-Layer-Xtreme) features an extra “stopper” fold-over layer providing a torque limiting surface that prevents yielding...$86.05 -
Cometic - C10336-036 - Head Gasket - 4.320" x 0.036" - M8
Cometic
$86.05Cometic - C10336-036 - Head Gasket - 4.320" x 0.036" - M8FeaturesMLX Gasket (Multi-Layer-Xtreme) features an extra “stopper” fold-over layer providing a torque limiting surface that prevents yielding...$86.05 -
Cometic - C10336-032 - Head Gasket - 4.320" x 0.032" - M8
Cometic
$86.05Cometic - C10336-032 - Head Gasket - 4.320" x 0.032" - M8FeaturesMLX Gasket (Multi-Layer-Xtreme) features an extra “stopper” fold-over layer providing a torque limiting surface that prevents yielding...$86.05 -
Cometic - C10345-036 - Head Gasket - 3.937" x 0.036" - M8
Cometic
$86.05Cometic - C10345-036 - Head Gasket - 3.937" x 0.036" - M8FeaturesMLX Gasket (Multi-Layer-Xtreme) features an extra “stopper” fold-over layer providing a torque limiting surface that prevents yielding...$86.05 -
Cometic - C10275 - Complete Engine/Primary Gasket Kit - Fits 2017-2023 M-Eight Softail, 4.250" bore, 0040" head gaskets
Cometic
$340.15Cometic - C10275 - Complete Engine/Primary Gasket KitFeaturesEvery gasket in the kit uses the best materials possible for its intended applicationComplete kit includes motor gasket kit plus primary,...$340.15 -
Cometic - C10271 - Complete Engine/Primary Gasket Kit - Fits 2017-2023 M-Eight Softail, 4.075" bore, 0.040" head gaskets
Cometic
$340.15Cometic - C10271 - Complete Engine/Primary Gasket KitFeaturesEvery gasket in the kit uses the best materials possible for its intended applicationComplete kit includes motor gasket kit plus primary,...$340.15 -
Cometic - C10269 - Complete Engine/Primary Gasket Kit - Fits 2017-2023 M-Eight Softail, 3.937" bore, 0.040" head gaskets
Cometic
$340.15Cometic - C10269 - Complete Engine/Primary Gasket KitFeaturesEvery gasket in the kit uses the best materials possible for its intended applicationComplete kit includes motor gasket kit plus primary,...$340.15 -
Cometic - C10266 - Complete Engine/Primary Gasket Kit - Fits 2017-2023 M-Eight Touring, 4.250" bore, 0.040" head gaskets
Cometic
$340.15Cometic - C10266 - Complete Engine/Primary Gasket KitFeaturesEvery gasket in the kit uses the best materials possible for its intended applicationComplete kit includes motor gasket kit plus primary,...$340.15 -
Cometic - C10260 - Complete Engine/Primary Gasket Kit - Fits 2017-2023 M-Eight Touring, 3.937" bore, 0.040" head gaskets
Cometic
$330.70Cometic - C10260 - Complete Engine/Primary Gasket KitFeaturesEvery gasket in the kit uses the best materials possible for its intended applicationComplete kit includes motor gasket kit plus primary,...$330.70 -
Cometic - C10256 - Motor Gasket Kit - M8
Cometic
$267.70Cometic - C10256 - Motor Gasket Kit - M8FeaturesEvery gasket in these kit uses the best materials possible for its intended applicationMade in the USASpecs$267.70
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.