Engine
7735 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 - C9215 - Main Drive Gear Seal - Big Twin/M8
Cometic
$14.95Cometic - C9215 - Main Drive Gear Seal - Big Twin/M8FeaturesHigh-quality products for long-term reliabilityManufactured from premium fuel-resistant materials that will not creep, crack or become...$14.95 -
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 - C9262 - Main Shaft Seal - EVO
Cometic
$10.95Cometic - C9262 - Main Shaft Seal - EVO Features High-quality products for long-term reliability Manufactured from premium fuel-resistant materials that will not creep, crack or become...$10.95 -
Cometic - C10363 - Crankcase Gasket - 0.012"
Cometic
$51.95Cometic - C10363 - Crankcase Gasket - 0.012"FeaturesHigh-quality products for long term reliabilityManufactured from premium fuel-resistant materials that will not creep, crack or become brittleMade...$51.95 -
Cometic - C10232 - Muffler Gasket - M8/FXST/XL
Cometic
$42.07Cometic - 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...$42.07 -
Cometic - C10362 - Head Gasket - 0.024"
Cometic
$92.95Cometic - C10362 - Head Gasket - 0.024"FeaturesHigh-quality products for long-term reliabilityManufactured from premium fuel-resistant materials that will not creep, crack or become...$92.95 -
Cometic - C10362-HB - Cylinder Head/Base Gasket Kit
Cometic
$145.95Cometic - 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...$145.95 -
Cometic - C10361 - Base Gasket - 0.010"
Cometic
$52.95Cometic - 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 ...$52.95 -
Cometic - C10359 - Rocker Box Rebuild Gasket 88"/96"/103" with O-Rings and Tappet Gaskets - Twin Cam
Cometic
$66.95Cometic - C10359 - Rocker Box Rebuild Gasket 88"/96"/103" with O-Rings and Tappet Gaskets - Twin CamFeaturesPremium materials used for specific applications to provide a long, service free lifeKit...$66.95 -
Cometic - C10358-036 - Head Gasket - 4.125" - .036" - MLX - Twin Cam
Cometic
$92.95Cometic - 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...$92.95 -
Cometic - C10348-036 - Head Gasket - 4.500" x 0.036" - M8
Cometic
$92.95Cometic - 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...$92.95 -
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
$92.95Cometic - 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...$92.95 -
Cometic - C10336-036 - Head Gasket - 4.320" x 0.036" - M8
Cometic
$92.95Cometic - 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...$92.95 -
Cometic - C10336-032 - Head Gasket - 4.320" x 0.032" - M8
Cometic
$92.95Cometic - 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...$92.95 -
Cometic - C10345-036 - Head Gasket - 3.937" x 0.036" - M8
Cometic
$92.95Cometic - 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...$92.95 -
Cometic - C10275 - Complete Engine/Primary Gasket Kit - Fits 2017-2023 M-Eight Softail, 4.250" bore, 0040" head gaskets
Cometic
$365.95Cometic - 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,...$365.95 -
Cometic - C10271 - Complete Engine/Primary Gasket Kit - Fits 2017-2023 M-Eight Softail, 4.075" bore, 0.040" head gaskets
Cometic
$365.95Cometic - 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,...$365.95 -
Cometic - C10269 - Complete Engine/Primary Gasket Kit - Fits 2017-2023 M-Eight Softail, 3.937" bore, 0.040" head gaskets
Cometic
$365.95Cometic - 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,...$365.95 -
Cometic - C10266 - Complete Engine/Primary Gasket Kit - Fits 2017-2023 M-Eight Touring, 4.250" bore, 0.040" head gaskets
Cometic
$365.95Cometic - 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,...$365.95 -
Cometic - C10256 - Motor Gasket Kit - M8
Cometic
$280.41Cometic - C10256 - Motor Gasket Kit - M8FeaturesEvery gasket in these kit uses the best materials possible for its intended applicationMade in the USASpecs$280.41 -
Cometic - C10252 - Motor Gasket Kit - M8
Cometic
$286.95Cometic - C10252 - Motor Gasket Kit - M8FeaturesEvery gasket in these kit uses the best materials possible for its intended applicationMade in the USASpecs$286.95 -
Cometic - C10223 - Top End Gasket Kit with 0.040" Head Gasket - M8
Cometic
$257.95Cometic - C10223 - Top End Gasket Kit with 0.040" Head Gasket - M8FeaturesHead gasket material allows heat to be drawn away from the combustion ring and dissipated evenly across the gasket surface to...$257.95 -
Cometic - C10219 - Top End Gasket Kit with 0.040" Head Gasket - M8
Cometic
$252.39Cometic - C10219 - Top End Gasket Kit with 0.040" Head Gasket - M8FeaturesHead gasket material allows heat to be drawn away from the combustion ring and dissipated evenly across the gasket surface to...$252.39 -
Cometic - C10217 - Top End Gasket Kit with 0.040" Head Gasket - M8
Cometic
$257.95Cometic - C10217 - Top End Gasket Kit with 0.040" Head Gasket - M8FeaturesHead gasket material allows heat to be drawn away from the combustion ring and dissipated evenly across the gasket surface to...$257.95 -
Cometic - C10242 - Base Gasket - Gen-2 Embossing - M8
Cometic
$33.95Cometic - C10242 - Base Gasket - Gen-2 Embossing - M8FeaturesCenter or shim layer is uncoated stainless steel, which can be varied to accommodate multiple thickness requirementsOuter layers are...$33.95 -
Cometic - C10167-HB-030 - Cylinder Head/Base Gasket - M8
Cometic
$84.12Cometic - C10167-HB-030 - Cylinder Head/Base Gasket - M8FeaturesKit features Multi-Layer Steel (MLS) gaskets and two outer Viton®-coated embossed spring steel layers with an inner steel layer to...$84.12 -
Cometic - C10167-036 - Cylinder Head Gasket - 4.145" - M8
Cometic
$63.07Cometic - C10167-036 - Cylinder Head Gasket - 4.145" - M8FeaturesQuality materials developed for maximum performance tolerances and longevityMLS (Mutli-Layer Steel) head gaskets promote an even...$63.07 -
Cometic - C10167-030 - Cylinder Head Gasket - 4.145" - M8
Cometic
$63.07Cometic - C10167-030 - Cylinder Head Gasket - 4.145" - M8FeaturesQuality materials developed for maximum performance tolerances and longevityMLS (Mutli-Layer Steel) head gaskets promote an even...$63.07 -
Cometic - C10167 - Cylinder Head Gasket - 4.145" - M8
Cometic
$64.95Cometic - C10167 - Cylinder Head Gasket - 4.145" - M8FeaturesQuality materials developed for maximum performance tolerances and longevityMLS (Mutli-Layer Steel) head gaskets promote an even torque...$64.95 -
Cometic - C10166-HB-030 - Cylinder Head/Base Gasket - M8
Cometic
$84.12Cometic - C10166-HB-030 - Cylinder Head/Base Gasket - M8FeaturesKit features Multi-Layer Steel (MLS) gaskets and two outer Viton®-coated embossed spring steel layers with an inner steel layer to...$84.12 -
Cometic - C10166-030 - Cylinder Head Gasket - 4.075" - M8
Cometic
$63.07Cometic - C10166-030 - Cylinder Head Gasket - 4.075" - M8FeaturesQuality materials developed for maximum performance tolerances and longevityMLS (Mutli-Layer Steel) head gaskets promote an even...$63.07 -
Cometic - C10166 - Cylinder Head Gasket - 4.095" - M8
Cometic
$64.95Cometic - C10166 - Cylinder Head Gasket - 4.095" - M8FeaturesQuality materials developed for maximum performance tolerances and longevityMLS (Mutli-Layer Steel) head gaskets promote an even torque...$64.95 -
Cometic - C10164-HB-030 - Cylinder Head/Base Gasket - M8
Cometic
$84.12Cometic - C10164-HB-030 - Cylinder Head/Base Gasket - M8FeaturesKit features Multi-Layer Steel (MLS) gaskets and two outer Viton®-coated embossed spring steel layers with an inner steel layer to...$84.12 -
Cometic - C10165 - Cylinder Head Gasket - 4.000" - M8
Cometic
$63.07Cometic - C10165 - Cylinder Head Gasket - 4.000" - M8FeaturesQuality materials developed for maximum performance tolerances and longevityMLS (Mutli-Layer Steel) head gaskets promote an even torque...$63.07
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.