Engine
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S&S Cycle - 124" Power Packages fits '17-'21 M8 Oil-Cooled Engines
S&S Cycle
$2,699.95 - $3,695.95S&S Cycle - 124" Power Packages fits '17-'20 M8 Oil-Cooled Engines This bolt-on Power Package increases your 107" M8 Engine to 124". It comes in a wrinkle black finish and is available with or without fin highlighting. You can also choose between a...$2,699.95 - $3,695.95 -
Trask - Assualt Series Cam Covers fits '17-Up Harley M8 Models
Trask Performance
$429.95Trask - Assualt Series Cam Covers fits '17-Up Harley M8 Models Transparent for viewing internal engine components Matches Assault series of air cleaners Made in the U.S.A. Fitment: 2020 Harley-Davidson CVO Tri Glide...$429.95 -
James Gaskets - Cam Quick Change Gasket Seal Kit Metal w/ Bead - fits '70-'92 FLT, FXR, Softail
James Gaskets
$41.95James Gaskets Gasket Kits use state of the art materials and production methods to make the best gaskets available. Made in the USA Fitment: '70-'92 FLT, FXR, Softail$41.95 -
On Sale
Accel - Oil Pressure Switches fits '41-'83 Big Twin Models
Accel
MSRP: $43.56Now: $24.99Was: $44.95Accel - Oil Pressure Switches fits '41-'83 Big Twin Models Features: The Accel Oil Pressure Switches are reliable and will protect your motorcycle engine. Heavy duty contacts, brass ferrules and corrosion resistant plated steel shells are used for...MSRP: $43.56Now: $24.99Was: $44.95 -
James Gaskets - Gasket O-Ring Kit, Cam Quick Change - fits '99-Up Twin Cams
James Gaskets
$56.95James Gaskets Twin Cam Gasket Kits uses state of the art materials and production methods to make the best gaskets available. Made in the USA Fitment: '99-Up Twin Cam Models$56.95 -
James Gaskets - Twin Cam Top End Gasket Kit w/ MLS Head Gaskets - fits '99-'04
James Gaskets
$144.95James Gaskets Twin Cam Gasket Kits uses state of the art materials and production methods to make the best gaskets available. Made in the USA Fitment: '99-'04 Twin Cam Models$144.95 -
Colony - Cylinder Base Nut Set - Chrome fits '57-'84 XLR
Colony Machine
$39.99Colony C chrome cylinder base nuts. Fits: XLR 1957-1984$39.99 -
V-Twin - 883-1200cc Cylinder and Piston Conversion Kit fits '86-'03 XL - Silver
V-Twin Mfg
MSRP: $713.81$648.92V-Twin's 1200cc XL conversion cylinder and piston set includes 2 silver finished with milled edge fin cylinders. Cylinders have fitted Wiseco moly 9.5:1 reverse dome piston and ring set. Order rocker box gasket set, base/head gaskets separately. Fits: ...MSRP: $713.81$648.92 -
Colony - 8401-8 Rocker Shaft Cadmium End Cap Type Nuts with Washers fits '79-'83 FLT, '71-'84 FX, '82-'83 FXR Models
Colony Machine
MSRP: $21.52$18.29Colony - 8401-8 Rocker Shaft Cadmium End Cap Type Nuts with Washers fits '79-'83 FLT, '71-'84 FX, '82-'83 FXR Models Rocker arm shaft end nut kit contains 4 cap nuts and washers with cadmium. Fitment: FLT 1979-1983 FX 1971-1984 FXR 1982-1983 FL...MSRP: $21.52$18.29 -
Harddrive - 13-106 - Front Motor Mount Dyna Fx 91-17
HardDrive
$121.95Harddrive - 13-106 - Front Motor Mount Dyna Fx 91-17FeaturesGlobal Trade Item Number: 191361166525Quality replacement urethane rubber motor mountsFor Touring, Dyna and FXR modelsFitment2012-2016Harley DavidsonFLD Dyna Switchback2016-2017Harley...$121.95 -
V-Twin - 40-1872 - M8 Oil Control Valve
V-Twin Mfg
$33.19V-Twin - 40-1872 - M8 Oil Control ValveDescriptionOil control valve for air cooled engines on M8 models. Fits:FLT 2017-UPAdditional Information UOM1 - EA ManufacturerV-Twin OriginImported$33.19 -
V-Twin - 40-0831 - Oil Line Retainer Set
V-Twin Mfg
$68.21V-Twin - 40-0831 - Oil Line Retainer SetDescriptionOil line retainer set.Set of Five. Fits:FXST 2003-2013Additional Information UOM5 - SET ManufacturerV-Twin OriginImported 2025 Catalog Pages424$68.21 -
V-Twin - 37-9181 - Chrome Engine Mount Allen Screw Set
Gardner-Westcott
MSRP: $46.58$45.27V-Twin - 37-9181 - Chrome Engine Mount Allen Screw SetDescriptionChrome engine mount screw set with allen type screws for 4- speed transmissions connects engine mounts, front, top and r ear to frame. Fits:FL 1948-1984Additional Information UOM1 - KIT ...MSRP: $46.58$45.27 -
V-Twin - 31-1306 - Engine Mount Shim .036 inch
V-Twin Mfg
MSRP: $41.71$40.88V-Twin - 31-1306 - Engine Mount Shim .036 inch Description Engine mount shim has a thickness of .036". Fits: FXST 1984-1998 FX 1971-1984 EL 1936-1940 FL 1941-1984 Additional Information UOM 5 -...MSRP: $41.71$40.88 -
V-Twin - 16-9724 - Oil Pressure Sender Unit Wrench Tool
Motorshop
$58.48V-Twin - 16-9724 - Oil Pressure Sender Unit Wrench ToolDescriptionReversible ratcheting type wrench has a socket type head for easy removal and installation of oil pressure switch and fits Evolution models. Fits:FXST 1984-1998FXD 1991-1994FXR...$58.48 -
V-Twin - 14-0375 - Valve Guide Seals
V-Twin Mfg
$29.11V-Twin - 14-0375 - Valve Guide SealsDescriptionSifton valve guides seals are metal type with rubber insert for Shovelhead engines. Fits:FLT 1979-1983FXR 1982-1983FL 1981-1984FX 1981-1984Additional Information UOM10 - PK ManufacturerV-Twin ...$29.11 -
V-Twin - 12-1416 - Chrome Oil Line Fitting
Motorshop
$33.32V-Twin - 12-1416 - Chrome Oil Line FittingDescriptionChrome, 90 street elbow oil line fitting has 1/8" NPT male x 1/8 " NPT female thread. Fits:FXST 1984-1998FXR 1982-1994FLT 1979-1998FX 1971-1984FXD 1991-1998FLST 1986-1998FL 1968-1984Additional...$33.32 -
V-Twin - 11-1684 - OE Front Rocker Box Breather Valve
OE
MSRP: $37.91$33.77V-Twin - 11-1684 - OE Front Rocker Box Breather ValveDescriptionOE front breather valve for the rocker box. Fits:XL 2007-UPAdditional Information OEM No.26012-07 UOM1 - EA ManufacturerOE OriginUSA 2025 Catalog Pages857MSRP: $37.91$33.77 -
V-Twin - 11-1408 - M8 Pushrod Cover Kit Gloss Black
Motorshop
$97.53V-Twin - 11-1408 - M8 Pushrod Cover Kit Gloss BlackDescriptionPushrod cover kit for M8 models includes all necessary pieces for complete pushrod cover installation. Features a gloss black finish to highlight the M8 engine.Will work with stock or...$97.53 -
V-Twin - 11-1073 - Pushrod Cover Cup Set Brass
Motorshop
$47.34V-Twin - 11-1073 - Pushrod Cover Cup Set BrassDescriptionPushrod cover spring cup set is machined of solid brass and polished.Set of four. Fits:FXD 1991-2017FX 1971-1984EL 1936-1940FL 1941-1984XL 1957-1989FLST 1986-2017FXST 1984-2017FXR 1984-1994FLT...$47.34 -
V-Twin - 11-0871 - Piston Wrist Pin and Lock Kit
Motorshop
$24.83V-Twin - 11-0871 - Piston Wrist Pin and Lock KitDescriptionWrist pin and lock kit includes two wrist pins and four lock rings. Fits:FXST 1984-1998FLT 1984-1998FXD 1991-1998FXR 1984-1994FLST 1986-1998Additional Information OEM No.22764-83 UOM1 - KIT ...$24.83 -
Drag Specialties - DS246010 - Rocker Oil Line Set - Chrome - Shovelhead
Drag Specialties
$32.91Drag Specialties - DS246010 - Rocker Oil Line Set - Chrome - ShovelheadFeaturesChromed steel overhead oil line set includes crossover line and crankcase-to-rocker box lineComplete with fittings and seals, which are also available separatelySpecsBase...$32.91 -
Trask - TM-017-RK - Assault Cam Cover Repair Kit - Twin Cam
Trask Performance
$39.95Trask - TM-017-RK - Assault Cam Cover Repair Kit - Twin CamFeaturesIncludes everything to repair Trask Assault Series Cam CoversMade in the USACam covers (sold separately).SpecsProduct NameRepair KitColor/FinishRawModelAssaultRiding...$39.95 -
Alloy Art - CRA-1 - Compression Release Adapter - 14 mm x 3/4"
Alloy Art
$20.95Alloy Art - CRA-1 - Compression Release Adapter - 14 mm x 3/4"FeaturesDesigned to be used in twin plug headsAccept .650”/10mm x 1.0 compression release valvesSold eachMade in the U.S.A.SpecsProduct NameAdapterConnector AngleStraightSize14 mm -...$20.95 -
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 USASpecsTypeReplacementUnitsSetRiding StyleStreetPiston Size ImperialStandardBore Size...$67.95 -
S&S Cycle - 16-0235 - Intake Manifold O-Ring - Super B/E
S&S Cycle
$11.95S&S Cycle - 16-0235 - Intake Manifold O-Ring - Super B/E Features Made from the highest-quality materials available Made in the USA Specs Color/Finish Black Model Super E Riding Style Street Units Each Product...$11.95 -
Kibblewhite - 71036-4 - Valve Seal
Kibblewhite
$8.16Kibblewhite - 71036-4 - Valve SealFeaturesMade in the U.S.A.Replacement Part for OEM Number(s): 1800081SpecsLength Imperial0.400''Product NameSealUnits4 PackRiding StyleStreetTypeValve GuideStem Diameter Imperial0...$8.16 -
Hastings - 2M4941 - Piston Rings - 3.875" Standard - 95"/103" Big Bore - Twin Cam
Hastings
$97.95Hastings - 2M4941 - Piston Rings - 3.875" Standard - 95"/103" Big Bore - Twin CamFeaturesIncludes top compression rings, second compression rings, and oil control ringsTop Compression Rings are Barrel FaceHelps in the the heat transfer process between...$97.95 -
Feuling Parts - 1230 - Rocker Shaft Shims - 0.003"/0.005"/0.010" - M8
Feuling
$79.95Feuling Parts - 1230 - Rocker Shaft Shims - 0.003"/0.005"/0.010" - M8FeaturesQuiet your engine by tightening the rocker arm to cylinder head end play clearanceFeuling recommends an ideal side clearance of 0.0035” - 0.005” for optimum rocker arm oil psi...$79.95 -
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): 8977SpecsUnitsEachTypeClosed EndProduct NameBearingRiding StyleStreetFitment1980 Harley-Davidson 1200 Electra Glide...$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 bolt seals needed when servicing both rocker boxesMade in...$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.SpecsColor/FinishChromeTypeBoltTypeRocker BoxBase ColorSilverProduct...$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, crack or become brittleViton® gasket features a stainless...$10.95 -
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 cam changeMade in the USAReplacement Part for OEM...$39.85 -
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 Color/Finish Black Mounting Position Rear Riding...$646.95 -
Andrews - 291127 - Camshaft - EV27 - Evolution Big Twin
Andrews
$251.95Andrews - 291127 - Camshaft - EV27 - Evolution Big TwinFeaturesCapable of 6000+ rpm with stock springs and no valve floatBolt-in street cam with fast open and close rampsUses stock springs; works with carbs or fuel injectionPulls from 1500 to 6000...$251.95 -
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 Number(s):...$179.95 -
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 -
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 and spring, pressure relief valve and spring, check...MSRP: $499.95$445.95 -
Colony - 9634-4 Chrome Oil Pump Check and Relief Valve Plug fits '84-'98 FXST, '82-'94 FXR, '91-'98 FXD Models
Colony Machine
MSRP: $28.64$26.77Colony - 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 1981-1998 FXST 1984-1998 FXR 1982-1994 FXD 1991-1998 FL...MSRP: $28.64$26.77
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.