Engine
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Out of stock
Cometic - C9790 - Head Gaskets Stock Bore Twin Cam Pair 2/Pk Oe#16775-99
Cometic
$59.50Cometic - C9790 - Head Gaskets Stock Bore Twin Cam Pair 2/Pk Oe#16775-99FeaturesAt Cometic Gasket, our goal is to offer the latest in gasket technologyMaterials, manufacturing processes and gasket designs are constantly improving to match the higher...$59.50 -
Out of stock
Cometic - C9807F - Complete Est Gasket Twin Cam Kit
Cometic
$191.39Cometic - C9807F - Complete Est Gasket Twin Cam KitFeaturesGlobal Trade Item Number: 191070031152At Cometic Gasket, our goal is to offer the latest in gasket technologyMaterials, manufacturing processes and gasket designs are constantly improving to...$191.39 -
Out of stock
Cometic - C9840 - Rocker Box Gasket Twin Cam Kit Twin Cam
Cometic
$42.21Cometic - C9840 - Rocker Box Gasket Twin Cam Kit Twin CamFeaturesAt Cometic Gasket, our goal is to offer the latest in gasket technologyMaterials, manufacturing processes and gasket designs are constantly improving to match the higher level of...$42.21 -
Out of stock
Cometic - C9844 - Top End Est Gasket Twin Cam Kit
Cometic
$147.46Cometic - C9844 - Top End Est Gasket Twin Cam KitFeaturesAt Cometic Gasket, our goal is to offer the latest in gasket technologyMaterials, manufacturing processes and gasket designs are constantly improving to match the higher level of performance for...$147.46 -
Out of stock
Cometic - C9845 - Top End Est Gasket Twin Cam Kit
Cometic
$147.46Cometic - C9845 - Top End Est Gasket Twin Cam KitFeaturesAt Cometic Gasket, our goal is to offer the latest in gasket technologyMaterials, manufacturing processes and gasket designs are constantly improving to match the higher level of performance for...$147.46 -
Out of stock
Cometic - C9846F - Complete Est Gasket Evo Big Twin Kit Oe#17041-92-A
Cometic
$353.56Cometic - C9846F - Complete Est Gasket Evo Big Twin Kit Oe#17041-92-AFeaturesAt Cometic Gasket, our goal is to offer the latest in gasket technologyMaterials, manufacturing processes and gasket designs are constantly improving to match the higher level...$353.56 -
Out of stock
Cometic - C9850 - Top End Est Gasket Evo Big Twin Kit
Cometic
$140.45Cometic - C9850 - Top End Est Gasket Evo Big Twin KitFeaturesAt Cometic Gasket, our goal is to offer the latest in gasket technologyMaterials, manufacturing processes and gasket designs are constantly improving to match the higher level of performance...$140.45 -
Out of stock
Cometic - C9851 - Top End Est Gasket Evo Big Twin Kit Oe#17033-83-A
Cometic
$140.45Cometic - C9851 - Top End Est Gasket Evo Big Twin Kit Oe#17033-83-AFeaturesAt Cometic Gasket, our goal is to offer the latest in gasket technologyMaterials, manufacturing processes and gasket designs are constantly improving to match the higher level of...$140.45 -
Out of stock
Cometic - C9894-040 - Head Gasket .040" Twin Cam 2/Pk
Cometic
$59.50Cometic - C9894-040 - Head Gasket .040" Twin Cam 2/PkFeaturesAt Cometic Gasket, our goal is to offer the latest in gasket technologyMaterials, manufacturing processes and gasket designs are constantly improving to match the higher level of performance...$59.50 -
Out of stock
Cometic - C9894-051 - Head Gasket .051" Twin Cam 2/Pk
Cometic
$59.50Cometic - C9894-051 - Head Gasket .051" Twin Cam 2/PkFeaturesAt Cometic Gasket, our goal is to offer the latest in gasket technologyMaterials, manufacturing processes and gasket designs are constantly improving to match the higher level of performance...$59.50 -
Out of stock
Cometic - C9920 - Complete Est Gasket Twin Cam Kit
Cometic
$207.99Cometic - C9920 - Complete Est Gasket Twin Cam KitFeaturesFitment1999-2006Harley DavidsonFLHR Road King1999-2006Harley DavidsonFLHTC Electra Glide Classic1999-2006Harley DavidsonFLHTCU Electra Glide Ultra Classic2006Harley DavidsonFLHX Street...$207.99 -
Out of stock
Cometic - C9944F1 - Sportster Cam Cover Gasket Sportster 1/Pk Oe#25263-90D
Cometic
$10.01Cometic - C9944F1 - Sportster Cam Cover Gasket Sportster 1/Pk Oe#25263-90DFeaturesAt Cometic Gasket, our goal is to offer the latest in gasket technologyMaterials, manufacturing processes and gasket designs are constantly improving to match the higher...$10.01 -
Out of stock
Cometic - C9949 - Top End Est Gasket Twin Cam Kit
Cometic
$150.79Cometic - C9949 - Top End Est Gasket Twin Cam KitFeaturesAt Cometic Gasket, our goal is to offer the latest in gasket technologyMaterials, manufacturing processes and gasket designs are constantly improving to match the higher level of performance for...$150.79 -
Out of stock
Cometic - C9951 - Top End Est Gasket Twin Cam Kit
Cometic
$147.46Cometic - C9951 - Top End Est Gasket Twin Cam KitFeaturesAt Cometic Gasket, our goal is to offer the latest in gasket technologyMaterials, manufacturing processes and gasket designs are constantly improving to match the higher level of performance for...$147.46 -
Out of stock
Cometic - C9955 - Tappet Block Gasket .032" Evo Sportster 2/Pk Oe#17976-04
Cometic
$11.74Cometic - C9955 - Tappet Block Gasket .032" Evo Sportster 2/Pk Oe#17976-04FeaturesAt Cometic Gasket, our goal is to offer the latest in gasket technologyMaterials, manufacturing processes and gasket designs are constantly improving to match the higher...$11.74 -
Out of stock
Cometic - C9971 - Top End Est Gasket Evo Sportster Kit Oe#17049-04
Cometic
$140.45Cometic - C9971 - Top End Est Gasket Evo Sportster Kit Oe#17049-04FeaturesAt Cometic Gasket, our goal is to offer the latest in gasket technologyMaterials, manufacturing processes and gasket designs are constantly improving to match the higher level of...$140.45 -
Out of stock
Cometic - C9997F1 - Derby Cover Gasket Big Twin Ea 1/Pk Oe#25416-99C
Cometic
$8.12Cometic - C9997F1 - Derby Cover Gasket Big Twin Ea 1/Pk Oe#25416-99CFeaturesAt Cometic Gasket, our goal is to offer the latest in gasket technologyMaterials, manufacturing processes and gasket designs are constantly improving to match the higher level of...$8.12 -
Out of stock
James Gaskets - 17955-48-FLR - Gasket Seal Pushrod Cover Rubber Kit 17955-48-Flr
James Gaskets
$14.50James Gaskets - 17955-48-FLR - Gasket Seal Pushrod Cover Rubber Kit 17955-48-FlrFeaturesGenuine James Gaskets uses state of the art materials and production methods to make the best gaskets availableMade in the U.S.A.$14.50 -
Out of stock
James Gaskets - 63800-48-K - Gasket Reb Side Oil Filter Kit Filter 63800-48-K
James Gaskets
$20.95James Gaskets - 63800-48-K - Gasket Reb Side Oil Filter Kit Filter 63800-48-KFeaturesGenuine James Gaskets uses state of the art materials and production methods to make the best gaskets availableMade in the U.S.A.$20.95 -
Out of stock
James Gaskets - 17955-36-XL - Gasket Seal Pushrod Cover Cork Kit 17955-36-Xl
James Gaskets
$15.95James Gaskets - 17955-36-XL - Gasket Seal Pushrod Cover Cork Kit 17955-36-XlFeaturesGenuine James Gaskets uses state of the art materials and production methods to make the best gaskets availableMade in the U.S.A.Fitment1972-1979Harley DavidsonXLH1000...$15.95 -
Out of stock
James Gaskets - 18000-57-K - Gasket Seal Valve Stem In/Ex Early Xl Kit 18000-57-K
James Gaskets
$11.50James Gaskets - 18000-57-K - Gasket Seal Valve Stem In/Ex Early Xl Kit 18000-57-KFeaturesGenuine James Gaskets uses state of the art materials and production methods to make the best gaskets availableMade in the U.S.A.Fitment1972-1985Harley...$11.50 -
Out of stock
Kpmi - 20-2014 - Black Diamond Exhaust Valve Hd Sporster 1200Cc 86-03
KPMI
$30.95Kpmi - 20-2014 - Black Diamond Exhaust Valve Hd Sporster 1200Cc 86-03FeaturesAll KPMI Black Diamond® stainless steel valves are impregnated by a special German process to a depth of .002”, with a surface build up of .0002”. This “Black Diamond®” process...$30.95 -
Out of stock
Kpmi - 20-20322 - Black Diamond Intake Valve Hd Twin Cam 88-103" 05-11
KPMI
$37.95Kpmi - 20-20322 - Black Diamond Intake Valve Hd Twin Cam 88-103" 05-11FeaturesAll KPMI Black Diamond® stainless steel valves are impregnated by a special German process to a depth of .002”, with a surface build up of .0002”. This “Black Diamond®” process...$37.95 -
Out of stock
Kpmi - 20-4257 - Black Diamond Intake Valve Hd Panhead 48-65
KPMI
$30.95Kpmi - 20-4257 - Black Diamond Intake Valve Hd Panhead 48-65FeaturesAll KPMI Black Diamond® stainless steel valves are impregnated by a special German process to a depth of .002”, with a surface build up of .0002”. This “Black Diamond®” process improves...$30.95 -
Out of stock
Kpmi - 20-4171R - Black Diamond Intake Valve Hd Evolution 84-99
KPMI
$29.81Kpmi - 20-4171R - Black Diamond Intake Valve Hd Evolution 84-99FeaturesAll KPMI Black Diamond® stainless steel valves are impregnated by a special German process to a depth of .002”, with a surface build up of .0002”. This “Black Diamond®” process...$29.81 -
Out of stock
Kpmi - 20-4196 - Black Diamond Intake Valve Hd Sportster 70-83
KPMI
$37.55Kpmi - 20-4196 - Black Diamond Intake Valve Hd Sportster 70-83FeaturesAll KPMI Black Diamond® stainless steel valves are impregnated by a special German process to a depth of .002”, with a surface build up of .0002”. This “Black Diamond®” process...$37.55 -
Out of stock
Kpmi - 20-20122 - Spring Kit .600 Lift Hd Twin Cam
KPMI
$280.95Kpmi - 20-20122 - Spring Kit .600 Lift Hd Twin CamFeaturesWound from Premium Kobe Super-Clean Chrome Silicon Wire. KPMI valve springs are heat-treated, stress relieved and shot peened to insure maximum performance and life. Springs are engineered for...$280.95 -
Out of stock
Kpmi - 20-2050C - Guide Intake Std Cast Iron Hd Shovelhead 78-83
KPMI
$9.71Kpmi - 20-2050C - Guide Intake Std Cast Iron Hd Shovelhead 78-83FeaturesFitment1983Harley DavidsonFLHTC Electra Glide Classic1982-1983Harley DavidsonFXR Super Glide1980-1982Harley DavidsonFXB Sturgis1978-1983Harley DavidsonFXE Super Glide1979-1981Harley...$9.71 -
Out of stock
Kpmi - 20-4320 - Guide In / Ex Std. Bronze Hd Evolution 87-99
KPMI
$37.93Kpmi - 20-4320 - Guide In / Ex Std. Bronze Hd Evolution 87-99FeaturesFitment1994-2004Harley DavidsonFLHR Road King1984-2004Harley DavidsonFLHTC Electra Glide Classic1989-2004Harley DavidsonFLHTCU Electra Glide Ultra Classic1986-1994Harley DavidsonFXR...$37.93 -
Out of stock
Kpmi - 20-4321 - Guide In / Ex +0.001 Bronze Hd Evolution 87-99
KPMI
$37.93Kpmi - 20-4321 - Guide In / Ex +0.001 Bronze Hd Evolution 87-99FeaturesFitment1994-2004Harley DavidsonFLHR Road King1984-2004Harley DavidsonFLHTC Electra Glide Classic1989-2004Harley DavidsonFLHTCU Electra Glide Ultra Classic1986-1994Harley DavidsonFXR...$37.93 -
Out of stock
Kpmi - 20-20690C - Guide Intake Std Cast Iron Hd Twin Cam 88-103" 05-11
KPMI
$11.95Kpmi - 20-20690C - Guide Intake Std Cast Iron Hd Twin Cam 88-103" 05-11FeaturesFitment2014-2017Harley DavidsonXL1200T Super Low Touring2015-2016Harley DavidsonFLRT Freewheeler2015-2016Harley DavidsonFLHTCUL Electra Glide Ultra Classic Low2015-2016Harley...$11.95 -
Out of stock
Kpmi - 20-20700C - Guide Exhaust Std Cast Iron Hd Twin Cam 88-103" 05-11
KPMI
$11.95Kpmi - 20-20700C - Guide Exhaust Std Cast Iron Hd Twin Cam 88-103" 05-11FeaturesFitment2014-2017Harley DavidsonXL1200T Super Low Touring2015-2016Harley DavidsonFLRT Freewheeler2015-2016Harley DavidsonFLHTCUL Electra Glide Ultra Classic Low2015-2016Harley...$11.95 -
Out of stock
Kpmi - 20-2033 - Guide Ex +0.003 Bronze Hd Pan 48-65 & Shovel 66-77
KPMI
$34.40Kpmi - 20-2033 - Guide Ex +0.003 Bronze Hd Pan 48-65 & Shovel 66-77$34.40 -
Out of stock
Kpmi - 20-2064C - Guide Ex +0.004 Cast Iron Hd Shovelhead 78-83
KPMI
$9.71Kpmi - 20-2064C - Guide Ex +0.004 Cast Iron Hd Shovelhead 78-83FeaturesFitment1983Harley DavidsonFLHTC Electra Glide Classic1982-1983Harley DavidsonFXR Super Glide1980-1982Harley DavidsonFXB Sturgis1980-1983Harley DavidsonFXE Super Glide1980-1981Harley...$9.71 -
Out of stock
Kpmi - 20-20702C - Guide Ex +.002 Cast Iron Hd Twin Cam 88-103 2005-13
KPMI
$11.95Kpmi - 20-20702C - Guide Ex +.002 Cast Iron Hd Twin Cam 88-103 2005-13FeaturesFitment2014-2017Harley DavidsonXL1200T Super Low Touring2015-2016Harley DavidsonFLRT Freewheeler2015-2016Harley DavidsonFLHTCUL Electra Glide Ultra Classic Low2015-2016Harley...$11.95 -
Out of stock
Kpmi - 20-2130C - Guide Ex Std Cast Iron Hd Evo 84-99 Sportster 86-03
KPMI
$8.95Kpmi - 20-2130C - Guide Ex Std Cast Iron Hd Evo 84-99 Sportster 86-03FeaturesFitment1994-2004Harley DavidsonFLHR Road King1984-2004Harley DavidsonFLHTC Electra Glide Classic1989-2004Harley DavidsonFLHTCU Electra Glide Ultra Classic1986-1994Harley...$8.95 -
Out of stock
Kpmi - 20-4322C - Guide In / Ex +0.002 Iron Hd Evo 84-99
KPMI
$9.71Kpmi - 20-4322C - Guide In / Ex +0.002 Iron Hd Evo 84-99FeaturesFitment1994-2004Harley DavidsonFLHR Road King1984-2004Harley DavidsonFLHTC Electra Glide Classic1989-2004Harley DavidsonFLHTCU Electra Glide Ultra Classic1986-1994Harley DavidsonFXR Super...$9.71 -
Out of stock
Kpmi - 20-4323 - Guide In / Ex +0.003 Bronze Hd Evo 84-99
KPMI
$37.93Kpmi - 20-4323 - Guide In / Ex +0.003 Bronze Hd Evo 84-99FeaturesFitment1994-2004Harley DavidsonFLHR Road King1984-2004Harley DavidsonFLHTC Electra Glide Classic1989-2004Harley DavidsonFLHTCU Electra Glide Ultra Classic1986-1994Harley DavidsonFXR Super...$37.93 -
Out of stock
Kpmi - 20-4323C - Guide In / Ex +0.003 Ron Hd Evo 84-99
KPMI
$9.71Kpmi - 20-4323C - Guide In / Ex +0.003 Ron Hd Evo 84-99FeaturesFitment1994-2004Harley DavidsonFLHR Road King1984-2004Harley DavidsonFLHTC Electra Glide Classic1989-2004Harley DavidsonFLHTCU Electra Glide Ultra Classic1986-1994Harley DavidsonFXR Super...$9.71 -
Out of stock
Kpmi - 20-2021C - Guide Intake +0.001 Cast Iron Hd Pan 48-65 & Shovel 66-77
KPMI
$9.71Kpmi - 20-2021C - Guide Intake +0.001 Cast Iron Hd Pan 48-65 & Shovel 66-77$9.71
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.