Engine
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Cometic - Primary Gasket Kit fits '18-'22 M8 Softail Models
Cometic
$86.05Cometic - Primary Gasket Kit fits '18-'22 M8 Softail Models This kit features Cometic's proprietary AFM (Aluminum Foamette Material) gaskets. These gaskets have an aluminum core with a chemically blown, compounded nitrile synthetic rubber which is...$86.05 -
Cometic - Primary Gasket Kit fits '94-'06 Softail & '94-'05 Dyna Glide Models
Cometic
$138.55Cometic - Primary Gasket Kit fits '94-'06 Softail & '94-'05 Dyna Glide Models This kit features Cometic's proprietary AFM (Aluminum Foamette Material) gaskets. These gaskets have an aluminum core with a chemically blown, compounded nitrile synthetic...$138.55 -
Cometic - Breather Assembly Gasket Kit fits '03-'17 Twin Cam Models (Sold Each)
Cometic
$20.95Cometic - Breather Assembly Gasket Kit fits '03-'17 Twin Cam Models (Sold Each) This kit comes with all necessary gaskets/seals for a full breather rebuild assembly. Please Note: Breather assembly rebuild kit includes two metal breather plates, two...$20.95 -
Cometic - Primary Gasket Kit fits '17-'22 M8 Touring Models
Cometic
$87.10Cometic - Primary Gasket Kit fits '17-'22 M8 Touring Models This kit features Cometic's proprietary AFM (Aluminum Foamette Material) gaskets. These gaskets have an aluminum core with a chemically blown, compounded nitrile synthetic rubber which is...$87.10 -
Cometic - Primary Gasket Kit fits '91-'03 Sportster Models
Cometic
$56.65Cometic - Primary Gasket Kit fits '91-'03 Sportster Models This kit features Cometic's proprietary AFM (Aluminum Foamette Material) gaskets. These gaskets have an aluminum core with a chemically blown, compounded nitrile synthetic rubber which is bonded...$56.65 -
Cometic - Primary Gasket Kit fits '77-'90 Sportster Models
Cometic
$56.65Cometic - Primary Gasket Kit fits '77-'90 Sportster Models This kit features Cometic's proprietary AFM (Aluminum Foamette Material) gaskets. These gaskets have an aluminum core with a chemically blown, compounded nitrile synthetic rubber which is bonded...$56.65 -
Cometic - Primary Gasket Kit fits '07-'16 Touring & H-D FL Trike Models
Cometic
$121.75Cometic - Primary Gasket Kit fits '07-'16 Touring & H-D FL Trike Models This kit features Cometic's proprietary AFM (Aluminum Foamette Material) gaskets. These gaskets have an aluminum core with a chemically blown, compounded nitrile synthetic...$121.75 -
Cometic - C9449 - Oil Pump Inner Small O-Ring
Cometic
$3.10Cometic - C9449 - Oil Pump Inner Small O-RingFeaturesHigh-quality products for long-term reliabilityManufactured 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 -
Cometic - Primary Gasket Kit fits '06-'17 Dyna & '07-'17 Softail Models
Cometic
$121.75Cometic - Primary Gasket Kit fits '06-'17 Dyna & '07-'17 Softail Models This kit features Cometic's proprietary AFM (Aluminum Foamette Material) gaskets. These gaskets have an aluminum core with a chemically blown, compounded nitrile synthetic...$121.75 -
V-Twin - 15-0477 - Cylinder Head Gasket Set .030 inch
Cometic
$75.57V-Twin - 15-0477 - Cylinder Head Gasket Set .030 inchDescriptionCylinder head gasket set is .030 and features a 3-5/8" bore.Sold as a pair. Set can be used with 1270 XL big bore kit. Fits:FXST 1984-1998FLT 1984-1998FXD 1991-1998XL 1986-2003FXR...$75.57 -
Cometic - C10377-030 - Head Gasket - 4.250" - .030" - Center Cooled - MLS - M8
Cometic
$59.95Cometic - C10377-030 - Head Gasket - 4.250" - .030" - Center Cooled - MLS - M8FeaturesHigh-quality products for long-term reliabilityManufactured from premium fuel-resistant materials that will not creep, crack or become brittleMLX Gasket...$59.95 -
Cometic - C10377 - Head Gasket - 4.250" - .040" - Center Cooled - MLS - M8
Cometic
$59.95Cometic - C10377 - Head Gasket - 4.250" - .040" - Center Cooled - MLS - M8FeaturesHigh-quality products for long-term reliabilityManufactured from premium fuel-resistant materials that will not creep, crack or become brittleMLX Gasket...$59.95 -
Cometic - C10348-052 - Head Gasket - 4.500" - .052" - 4.515" ID Coolant - MLX - M8
Cometic
$86.00Cometic - C10348-052 - Head Gasket - 4.500" - .052" - 4.515" ID Coolant - MLX - M8FeaturesHigh-quality products for long-term reliabilityManufactured from premium fuel-resistant materials that will not creep, crack or become brittleMLX Gasket...$86.00 -
Cometic - C10378-030 - Head Gasket - 4.310" - .036" - Center Cooled - MLS - M8
Cometic
$59.95Cometic - C10378-030 - Head Gasket - 4.310" - .036" - Center Cooled - MLS - M8FeaturesHigh-quality products for long-term reliabilityManufactured from premium fuel-resistant materials that will not creep, crack or become brittleMLX Gasket...$59.95 -
Cometic - C10378 - Head Gasket - 4.310" - .040" - Center Cooled - MLS - M8
Cometic
$59.95Cometic - C10378 - Head Gasket - 4.310" - .040" - Center Cooled - MLS - M8FeaturesHigh-quality products for long-term reliabilityManufactured from premium fuel-resistant materials that will not creep, crack or become brittleMLX Gasket...$59.95 -
Cometic - C9223 - Manifold/Head Gasket - S&S
Cometic
$8.35Cometic - C9223 - Manifold/Head Gasket - S&SFeaturesViton gaskets feature a stainless steel core with a .001"-thick coating of Viton rubber on both sides.Made in the U.S.A.SpecsMaterialVitonUnits4 PackRiding StyleStreetProduct NameSealTypeIntake Manifold$8.35 -
Cometic - C9167 - Rocker Box Gasket Kit with seals 0.530" OD Value guides - Screamin' Eagle
Cometic
$56.65Cometic - C9167 - Rocker Box Gasket Kit with seals 0.530" OD Value guides - Screamin' EagleFeaturesPremium materials used for specific applications to provide a long, service free lifeInclude all gaskets, seals, O-rings and quality bolt seals needed when...$56.65 -
Cometic - C9934 - Head Gasket - S&S Super Sidewinder - 4.125" - .045"
Cometic
$61.90Cometic - C9934 - Head Gasket - S&S Super Sidewinder - 4.125" - .045"FeaturesHigh-quality products for long-term reliabilityManufactured from premium fuel-resistant materials that will not creep, crack or become brittleMulti-Layer Steel (MLS) gasket...$61.90 -
Cometic - C9917 - Top End Gasket - 4" - S&S
Cometic
$142.75Cometic - C9917 - Top End Gasket - 4" - S&SFeaturesEST gasket kit includes embossed stainless steel head, base and rocker gaskets covered with a proprietary rubber materialMaterial allows heat to be drawn away from the combustion ring and dissipated...$142.75 -
Cometic - C9933 - Head Gasket - S&S Super Sidewinder Plus - +4.125" - .040"
Cometic
$61.90Cometic - C9933 - Head Gasket - S&S Super Sidewinder Plus - +4.125" - .040"FeaturesHigh-quality products for long-term reliabilityManufactured from premium fuel-resistant materials that will not creep, crack or become brittleMulti-Layer Steel (MLS)...$61.90 -
Cometic - C9935 - Base Gasket - S&S Super Sidewinder Plus - +4.125" - .010"
Cometic
$33.55Cometic - C9935 - Base Gasket - S&S Super Sidewinder Plus - +4.125" - .010"FeaturesHigh quality products for long-term reliabilityManufactured from premium fuel-resistant materialsViton gaskets feature a stainless steel core with a .001" thick coating of...$33.55 -
Cometic - C9932 - Head Gasket - S&S Super Sidewinder Plus - +4.125" - .036"
Cometic
$61.90Cometic - C9932 - Head Gasket - S&S Super Sidewinder Plus - +4.125" - .036"FeaturesHigh-quality products for long-term reliabilityManufactured from premium fuel-resistant materials that will not creep, crack or become brittleMulti-Layer Steel (MLS)...$61.90 -
Cometic - C9931 - Head Gasket - S&S Super Sidewinder Plus - +4.125" - .030"
Cometic
$61.90Cometic - C9931 - Head Gasket - S&S Super Sidewinder Plus - +4.125" - .030"FeaturesHigh-quality products for long-term reliabilityManufactured from premium fuel-resistant materials that will not creep, crack or become brittleMulti-Layer Steel (MLS)...$61.90 -
Cometic - C9930 - Head Gasket - S&S Super Sidewinder Plus - +4.125" - .027"
Cometic
$61.90Cometic - C9930 - Head Gasket - S&S Super Sidewinder Plus - +4.125" - .027"FeaturesHigh-quality products for long-term reliabilityManufactured from premium fuel-resistant materials that will not creep, crack or become brittleMulti-Layer Steel (MLS)...$61.90 -
Cometic - C9767 - Top End Gasket - Big Bore - Big Twin - EST
Cometic
$176.35Cometic - C9767 - Top End Gasket - Big Bore - Big Twin - ESTFeaturesEST (Extreme Sealing Technology) gasket kit includes embossed stainless steel head, base, and rocker gaskets covered with a proprietary rubber materialHead gasket material allows heat to...$176.35 -
Cometic - C9766 - Top End Gasket Kit - Big Bore - Big Twin - EST
Cometic
$142.75Cometic - C9766 - Top End Gasket Kit - Big Bore - Big Twin - ESTFeaturesEST (Extreme Sealing Technology) gasket kit includes embossed stainless steel head, base, and rocker gaskets covered with a proprietary rubber materialHead gasket material allows...$142.75 -
Cometic - C9762 - Top End Gasket Kit - XL1200 - EST
Cometic
$142.75Cometic - C9762 - Top End Gasket Kit - XL1200 - ESTFeaturesEST (Extreme Sealing Technology) gasket kit includes embossed stainless steel head, base, and rocker gaskets covered with a proprietary rubber materialHead gasket material allows heat to be drawn...$142.75 -
Cometic - C9765 - Rocker Gasket - EST - XL
Cometic
$65.05Cometic - C9765 - Rocker Gasket - EST - XLFeaturesPremium materials used for specific applications to provide a long, service free lifeKits include all gaskets, seals, O-rings and quality bolt seals needed when servicing both rocker boxesMade in the U.S...$65.05 -
Cometic - C9764 - Rocker Gasket - EST - XL
Cometic
$65.05Cometic - C9764 - Rocker Gasket - EST - XLFeaturesPremium materials used for specific applications to provide a long, service free lifeKits include all gaskets, seals, O-rings and quality bolt seals needed when servicing both rocker boxesMade in the U.S...$65.05 -
Cometic - C9763 - Top End Gasket Kit - XL1200 - EST
Cometic
$142.75Cometic - C9763 - Top End Gasket Kit - XL1200 - ESTFeaturesEST (Extreme Sealing Technology) gasket kit includes embossed stainless steel head, base, and rocker gaskets covered with a proprietary rubber materialHead gasket material allows heat to be drawn...$142.75 -
Cometic - C9752 - Rocker Gasket - EST - Big Twin
Cometic
$65.05Cometic - C9752 - Rocker Gasket - EST - Big TwinFeaturesPremium materials used for specific applications to provide a long, service free lifeKits include all gaskets, seals, O-rings and quality bolt seals needed when servicing both rocker boxesMade in...$65.05 -
Cometic - C9761 - Top End Gasket Kit - XL1100 - EST
Cometic
$142.75Cometic - C9761 - Top End Gasket Kit - XL1100 - ESTFeaturesEST (Extreme Sealing Technology) gasket kit includes embossed stainless steel head, base, and rocker gaskets covered with a proprietary rubber materialHead gasket material allows heat to be drawn...$142.75 -
Cometic - C9753 - Rocker Gasket - EST - Big Twin
Cometic
$65.05Cometic - C9753 - Rocker Gasket - EST - Big TwinFeaturesPremium materials used for specific applications to provide a long, service free lifeKits include all gaskets, seals, O-rings and quality bolt seals needed when servicing both rocker boxesMade in...$65.05 -
Cometic - C9066 - Rocker Box Gasket - SLS - XL
Cometic
$47.20Cometic - C9066 - Rocker Box Gasket - SLS - XLFeaturesPremium materials used for specific applications to provide a long, service free lifeKits include all gaskets, seals, O-rings and quality bolt seals needed when servicing both rocker boxesMade in the...$47.20 -
Cometic - C9760 - Top End Gasket Kit - XL883 - EST
Cometic
$142.75Cometic - C9760 - Top End Gasket Kit - XL883 - ESTFeaturesEST (Extreme Sealing Technology) gasket kit includes embossed stainless steel head, base, and rocker gaskets covered with a proprietary rubber materialHead gasket material allows heat to be drawn...$142.75 -
Cometic - C9078 - Rocker Box Gasket
Cometic
$47.20Cometic - C9078 - Rocker Box GasketFeaturesPremium materials used for specific applications to provide a long, service free lifeKits include all gaskets, seals, O-rings and quality bolt seals needed when servicing both rocker boxesMade in the U.S.A...$47.20 -
Cometic - C9553 - Cylinder Base Gasket - .020" - XL
Cometic
$33.55Cometic - C9553 - Cylinder Base Gasket - .020" - XLFeaturesHigh-quality products for long-term reliabilityManufactured from premium fuel-resistant materials that will not creep, crack or become brittleViton® gasket features a stainless steel core with a ...$33.55 -
Cometic - C9555 - Cylinder Base Gasket - 3.625" - .020" - XL
Cometic
$33.55Cometic - C9555 - Cylinder Base Gasket - 3.625" - .020" - XLFeaturesHigh-quality products for long-term reliabilityManufactured from premium fuel-resistant materials that will not creep, crack or become brittleViton® gasket features a stainless steel...$33.55 -
Cometic - C9552 - Cylinder Base Gasket - 3.625" - .020" - EVO
Cometic
$33.55Cometic - C9552 - Cylinder Base Gasket - 3.625" - .020" - EVOFeaturesHigh-quality products for long-term reliabilityManufactured from premium fuel-resistant materials that will not creep, crack or become brittleViton® gasket features a stainless steel...$33.55 -
Cometic - C9551 - Cylinder Base Gasket - 3.500" - .020" - EVO
Cometic
$33.55Cometic - C9551 - Cylinder Base Gasket - 3.500" - .020" - EVOFeaturesHigh-quality products for long-term reliabilityManufactured from premium fuel-resistant materials that will not creep, crack or become brittleViton® gasket features a stainless steel...$33.55
Harley Engine
At Deadbeat Customs, we offer a wide selection of Harley engine parts built for performance, reliability, and long-lasting power. Whether you're rebuilding a vintage motor or upgrading a modern setup, we’ve got the top-end and bottom-end components you need to get the job done right.
We carry engine parts for a wide range of Harley Davidson models, including Dyna, Sportster, FXR, Touring, Softail, Shovelhead, and Panhead. From the classic Evo 1340 and Shovelhead to Twin Cam 88/96/103/110, and the modern Milwaukee-Eight 107/114/117, our catalog covers nearly every era of Harley engine design.
Choose from trusted brands like S&S Cycle, Fueling, Vance & Hines, and more—known for producing high-quality components that meet or exceed OEM standards.
Explore our full collection of Harley engine parts today and build your motor with confidence—because whether it’s vintage or modern, your Harley deserves the best from the inside out.