Engine
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Feuling Parts - 1077 - Valve Guide Seals - For 0.530" Guide - 5/16" Valve Stem - Screamin' Eagle Cylinder Heads - Fits 0.530" guide (" valve for most Screamin' Eagle heads (4 pk.), " valve for most Screamin' Eagle heads)
Feuling
$15.95Feuling Parts - 1077 - Valve Guide Seals - For 0.530" Guide - 5/16" Valve Stem - Screamin' Eagle Cylinder HeadsFeaturesHigh-quality Viton® valve guide sealsDesigned to handle high engine temperatures...$15.95 -
Goodridge - P816-06-02SCH - Oil Line Fitting - Straight - 1/8" NPT
Goodridge
MSRP: $8.61$7.95Goodridge - P816-06-02SCH - Oil Line Fitting - Straight - 1/8" NPTFeaturesFemale fittings match stainless steel braided hoses to form complete oil line assembliesMade in the USASpecsMSRP: $8.61$7.95 -
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...$61.90 -
Wiseco - 3537X - Ring Set
Wiseco
$52.95Wiseco - 3537X - Ring SetFeaturesInclude rings for one piston onlyWiseco rings fit only Wiseco pistons.Specs$52.95 -
S&S Cycle - 94-1210X - Replacement Piston Rings - 3.625" - Standard
S&S Cycle
$67.95S&S Cycle - 94-1210X - Replacement Piston Rings - 3.625" - StandardFeaturesReplacement ring sets for S&S pistons onlyRings come as sets for two pistonsMade in the USASpecs$67.95 -
S&S Cycle - 31-6018 - Oil Pump Relief Spring - Fits 1936-1999 Big Twin (except Twin Cam); repl. OEM #26207-83 (Relief valve spring, 1966-1984)
S&S Cycle
$6.95S&S Cycle - 31-6018 - Oil Pump Relief SpringFeaturesThis premium quality, steel-alloy oil pump pressure relief spring actually increases engine oil pressure by 2-3 psi, and does not interfere with...$6.95 -
S&S Cycle - 93-4022 - Pushrod Cover O-Ring Kit - Fits 2017-2025 M-Eight, 1999-2017 Twin Cam and 1986-2003 XL; 1984-1999 Evolution Big Twin
S&S Cycle
$12.95S&S Cycle - 93-4022 - Pushrod Cover O-Ring KitFeaturesFor O-ring style bottom coverIncludes all parts for four pushrods: top, middle and bottom O-ringsSpecs$12.95 -
S&S Cycle - 93-5120 - Quickee Pushrods - Big Twin
S&S Cycle
$224.95S&S Cycle - 93-5120 - Quickee Pushrods - Big TwinFeaturesFeatures revolutionary design - allows quicker, easier installation without the removal of the rocker covers.4375” diameter Chromoly...$224.95 -
S&S Cycle - 31-4009 - Cam Bearing - Big Twin
S&S Cycle
$17.95S&S Cycle - 31-4009 - Cam Bearing - Big Twin Features Superior quality OE replacement bearings Made in the U.S.A. Specs$17.95 -
Kibblewhite - 71036-4 - Valve Seal - Fits L1970-1984 Shovelhead (0.562")
Kibblewhite
$8.16Kibblewhite - 71036-4 - Valve SealFeaturesMade in the U.S.A.Replacement Part for OEM Number(s): 1800081SpecsL$8.16 -
Hastings - 6164 - Piston Rings - 3.498" Standard - Evolution Big Twin
Hastings
$37.85Hastings - 6164 - Piston Rings - 3.498" Standard - Evolution Big TwinFeaturesIncludes top compression rings, second compression rings, and oil control ringsTop Compression Rings are Barrel FaceCast...$37.85 -
Feuling Parts - 9962 - Head Temperature Sensor - Fits 1999-2017 Twin Cam (EFI); repl. OEM #32446-99
Feuling
$29.95Feuling Parts - 9962 - Head Temperature Sensor Features Electronic engine management sensor found on the cylinder head Measures the temperature of the cylinder head Data is then sent to the ECU...$29.95 -
Feuling Parts - 7086 - Conversion Oil System - OE+ - Twin Cam
Feuling
$639.95Feuling Parts - 7086 - Conversion Oil System - OE+ - Twin CamFeaturesUpgrade to the stock oiling system, delivering increased oil pressure and return scavenging volumes from billet oil pump and...$639.95 -
Feuling Parts - 7030 - Oil Pump - OE+ - Twin Cam
Feuling
$319.95Feuling Parts - 7030 - Oil Pump - OE+ - Twin CamFeaturesMade of 6061 billet aluminum with high-flow 2" chromoly gerotor gearsOil pumps increase oil pressure and scavenge return volumeFeuling® OE+...$319.95 -
Feuling Parts - 7320 - Camchest Kit - OE+ Hydraulic Cam Chain Conversion - 525 Series - Twin Cam
Feuling
$1,839.95Feuling Parts - 7320 - Camchest Kit - OE+ Hydraulic Cam Chain Conversion - 525 Series - Twin CamFeaturesKit includes Feuling® OE+® oil pump, OE+® camplate, Reaper® series conversion camshafts, HP+®...$1,839.95 -
Feuling Parts - 1076 - Valve Guide Seals - For 7.00 mm Valve Stem - 88"/96"/103" Twin Cam | XL
Feuling
$15.95Feuling Parts - 1076 - Valve Guide Seals - For 7.00 mm Valve Stem - 88"/96"/103" Twin Cam | XLFeaturesHigh-quality Viton® valve guide sealsDesigned to handle high engine temperatures with a built-in...$15.95 -
Feuling Parts - 2074 - Inner Cam Bearing - Big Twin
Feuling
$18.95Feuling Parts - 2074 - Inner Cam Bearing - Big TwinFeaturesBearings are heavy-duty full-complement style designed to accept the higher loads and demands of performance enginesManufactured by Koyo®...$18.95 -
Feuling Parts - 2076 - Inner Cam Bearings
Feuling
$32.95Feuling Parts - 2076 - Inner Cam BearingsFeaturesInner cam bearings are heavy-duty full-complement style designed to accept the higher loads and demands of performance enginesManufactured by Koyo®...$32.95 -
Eastern Motorcycle Parts - A-8977 - Bearing
Eastern Motorcycle Parts
$41.95Eastern Motorcycle Parts - A-8977 - BearingFeaturesReplacement mainshaft bearing for 5-speed Big TwinsReplacement Part for OEM Number(s): 8977Specs$41.95 -
Cometic - C9588 - Rocker Box Gasket Kit - Twin Cam
Cometic
$46.15Cometic - C9588 - Rocker Box Gasket Kit - Twin CamFeaturesPremium materials used for specific applications to provide a long, service free lifeKits include all gaskets, seals, O-rings and quality...$46.15 -
Ciro - 70007 - Caps - Rocker Box/Bolt - Peaked - Chrome
Ciro
$39.99Ciro - 70007 - Caps - Rocker Box/Bolt - Peaked - ChromeFeaturesPrecision fit and simple press-on installationCover up old, dull or rusty boltsMade from stamped steelFor Twin Cam engines.Specs$39.99 -
Cometic - C10127 - Cylinder Base Gasket O-Ring Kit - 110" - Twin Cam
Cometic
$10.95Cometic - C10127 - Cylinder Base Gasket O-Ring Kit - 110" - Twin CamFeaturesHigh-quality products for long-term reliabilityManufactured from premium fuel-resistant materials that will not creep,...$10.95 -
Cometic - C9646F1 - Oil Pan Gasket - Dyna
Cometic
$13.60Cometic - C9646F1 - Oil Pan Gasket - DynaFeaturesAluminum Foamette Material gaskets feature an aluminum core and a chemically blown, compounded nitrile synthetic rubber coating that is bonded to the...$13.60 -
Cometic - C10178 - Cam Change Gasket Kit - M8
Cometic
$39.85Cometic - C10178 - Cam Change Gasket Kit - M8FeaturesComponents made from premium materials for long life and correct fitmentIncludes all necessary gaskets, seals, O-rings and cork washers to do a...$39.85 -
Cometic - C9130 - Gasket Kit - EVO/Big Twin
Cometic
$110.20Cometic - C9130 - Gasket Kit - EVO/Big TwinFeaturesEST (Extreme Sealing Technology) gasket kit includes embossed stainless steel head, base, and rocker gaskets covered with a proprietary rubber...$110.20 -
Custom Cycle Engineering - DMM 2014-2 - Rear Motor Mount - Dyna
Custom Cycle Engineering
$646.95Custom Cycle Engineering - DMM 2014-2 - Rear Motor Mount - Dyna Features Motor mount system replaces the inadequate stock mounts Made in the U.S.A. Specs$646.95 -
Alloy Art - NGMP-2 - Front Engine Mount - Black
Alloy Art
$179.95Alloy Art - NGMP-2 - Front Engine Mount - Black Features Lighter and stronger than stock CNC Machined Aluminum construction. Hardware included Made in the USA Replacement Part for OEM...$179.95 -
James Gasket - Cam Cover Gasket fits '93-'99 Evolution Models (Metal w/ Silicone (OEM #25225-93))
James Gaskets
$10.95James Gasket - Cam Cover Gasket fits '93-'99 Evolution Models (Metal w/ Silicone (OEM #25225-93)) Features: Replacement gaskets for cam chests$10.95 -
James Gasket - Oil Pump Gasket/Seal Kit with DL-Style Gasket fits '91-'03 Sportster Models
James Gaskets
$21.95James Gasket - Oil Pump Gasket/Seal Kit with DL-Style Gasket fits '91-'03 Sportster Models Features: Comes with new components that allow you to totally rebuild/rebush most oil pumps Made in the...$21.95 -
Drag Specialties - Paper Oil Filter with Spring fits '65-'82 FX/FL, '57-'78 Sportster Models (OEM #63835-87T, 63837-92T, 6383940-53)
Drag Specialties
$13.60Drag Specialties - Paper Oil Filter with Spring fits '65-'82 FX/FL, '57-'78 Sportster Models (OEM #63835-87T, 63837-92T, 6383940-53) Features: High-quality drop-in oil filter Fitment$13.60 -
Drag Specialties - Oil Filter fits 'L82-'84 FLH, 'L82-'86 FX/FXWG, '80-'E84 Sportster Models (OEM #63782-80A, 63810-80)
Drag Specialties
$10.45 - $12.55Drag Specialties - Oil Filter fits 'L82-'84 FLH, 'L82-'86 FX/FXWG, '80-'E84 Sportster Models (OEM #63782-80A, 63810-80) Features: High-quality spin-on filters are a dependable...$10.45 - $12.55 -
S&S Cycle - Billet Oil Pump fits '70-'91 Big Twin Models
S&S Cycle
MSRP: $499.95$445.95S&S Cycle - Billet Oil Pump fits '70-'91 Big Twin Models Features: Kit includes an oil pump with cover, mounting bolts, supply and return gears, drive shaft with keys and snap rings, check ball...MSRP: $499.95$445.95 -
S&S Cycle - Replacement Billet Oil Pump Gasket Kit
S&S Cycle
$17.95S&S Cycle - Replacement Billet Oil Pump Gasket Kit Features: Made in the U.S.A. Fitment$17.95 -
Colony - 8931-16 Rocker Box Cover Allen Screw fits '84-'98 FXST/FLT, '86-'UP XL, '91-'98 FXD Models - Chrome
Colony Machine
$26.48Colony - 8931-16 Rocker Box Cover Allen Screw fits '84-'98 FXST/FLT, '86-'UP XL, '91-'98 FXD Models - Chrome Chrome rocker box cover allen screw kit Fitment: FXST 1984-1998 FLT 1984-1998 XL...$26.48 -
Colony - 9634-4 Chrome Oil Pump Check and Relief Valve Plug fits '84-'98 FXST, '82-'94 FXR, '91-'98 FXD Models
Colony Machine
$29.45Colony - 9634-4 Chrome Oil Pump Check and Relief Valve Plug fits '84-'98 FXST, '82-'94 FXR, '91-'98 FXD Models Oil pump check and relief valve plug with a chrome finish. Fitment: FLT...$29.45 -
Colony - 9859-20 Lower Engine Mount Kit fits '89-'99 FLT, '89-'94 FXR Models
Colony Machine
$39.07Colony - 9859-20 Lower Engine Mount Kit fits '89-'99 FLT, '89-'94 FXR Models Chrome lower engine mount bolt kit. Fitment: FLT 1989-1999 FXR 1989-1994$39.07 -
V-Twin - Intake Manifold Seal Kit fits '90-'17 FLST/FXST, '88-'06 Sportster Models
V-Twin Mfg
$27.12V-Twin - Intake Manifold Seal Kit fits '90-'17 FLST/FXST, '88-'06 Sportster Models Manifold seal kit is to reseal late model manifolds with CV carburetor Fitment: FLST 1990-2017 FXD 1991-2017 FXST...$27.12 -
Wyatt Gatling - Shovelhead Chrome Rocker Box Line Kit fits '79-'83 FLT, '66-'84 FL, '82-'83 FXR Models
Wyatt Gatling
$67.58Wyatt Gatling - Shovelhead Chrome Rocker Box Line Kit fits '79-'83 FLT, '66-'84 FL, '82-'83 FXR Models Natural brass rocker box line kit includes "T" to oil the heads with 6mm brass tube and brass...$67.58 -
Colony - Hydraulic Pushrods fits '66-'84 Shovelhead w/ Hydraulic Lifters (OEM #17904-66)
Colony Machine
$74.95Colony - Hydraulic Pushrods fits '66-'84 Shovelhead w/ Hydraulic Lifters (OEM #17904-66) Features: Aircraft-grade aluminum tubing Heat-treated steel tips$74.95 -
Colony - Replacement Cylinder Stud Set fits '86-'22 Sportster Models (Except RH Sportster (OEM #16832-86A))
Colony Machine
$88.95Colony - Replacement Cylinder Stud Set fits '86-'22 Sportster Models (Except RH Sportster (OEM #16832-86A)) Features: Heat-treated for strength and durability Equal or surpass original...$88.95
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.