Engine
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Feuling - Endurance Beehive® Standard 6mm Valve Stem Valve Springs with Titanium Retainers Fits Harley '17-Up M8 Model
Feuling
$609.95Feuling - Endurance Beehive® Standard 6mm Valve Stem Valve Springs with Titanium Retainers Fits Harley '17-Up M8 Model Features Made from premium stress-relieved conical ovate wire Feature extremely high-level of fatigue life Use a much smaller...$609.95 -
Feuling - 465 HP+ Camchest Kit fits '17-Up M8 Twin-Cooled™ Motors
$1,795.95Feuling - 465 HP+ Camchest Kit fits '17-Up M8 Twin-Cooled™ Motors Features Quieter and smoother engine operation Increase oil pressure, scavenge volume and engine oil flow 15-35 degree cooler engine temperatures 15-30 degree cooler oil...$1,795.95 -
Feuling - 465 HP+ Camchest Kit fits '17-Up M8 Oil-Cooled Motors
$1,795.95Feuling - 465 HP+ Camchest Kit fits '17-Up M8 Oil-Cooled Motors Features Quieter and smoother engine operation Increase oil pressure, scavenge volume and engine oil flow 15-35 degree cooler engine temperatures 15-30 degree cooler oil...$1,795.95 -
Rough Crafts - Grooved Cam Cover fits '17 & Up M8 Softail Models (Choose Finish)
Rough Crafts
$359.95Rough Crafts - Grooved Cam Cover fits '17 & Up M8 Softail Models These Grooved Cam Covers come complete with all of the necessary mounting hardware for a quick and easy installation. Available in your choice of a black or chrome finish...$359.95 -
Rough Crafts - Grooved Rocker Box Cover fits '17 & Up M8 Softail Models (Choose Finish)
Rough Crafts
$699.95 - $769.95Rough Crafts - Grooved Rocker Box Cover fits '17 & Up M8 Softail Models These Grooved Rocker Box Covers come complete with all of the necessary mounting hardware for a quick and easy installation. Available in your choice of a black or chrome finish...$699.95 - $769.95 -
S&S Cycle - 128" Power Packages fits '17-'21 M8 Water/Oil-Cooled Engines
S&S Cycle
$3,289.95 - $3,359.95S&S Cycle - 128" Power Packages fits '17-'20 M8 Water/Oil-Cooled Engines This Power Package increases your 114"/117" with a 4-1/2" stroke M8 to 128". It is available in a wrinkle black or black granite finish and your choice of cylinders with or...$3,289.95 - $3,359.95 -
Colony Machine - Engine Bolt Kits fits '17-'21 Touring Models
Colony Machine
$243.95Colony Machine - Engine Bolt Kits fits '17-'20 Touring Models The Colony Machine Engine Bolt Kit is a fully equipped, chrome plated kit that is 100% manufactured in the U.S.A. Colony Machine is a choice brand among custom motorcycle builders,...$243.95 -
Performance Machine - Rocker Box Covers fits '17-'21 M-Eight
Performance Machine
$1,026.95Performance Machine - Rocker Box Covers fits '17-'20 M-Eight These Rocker Box Covers were created to be designed the way that best fits your bike's style. They are available in chrome, contrast cut or platinum cut finishes. Features Direct...$1,026.95 -
Roland Sands Design Clarity Cam Cover - fits '01-'17 Twin Cam w/o Cam Position Sensor ( exc. '01-'08 FL)
Roland Sands Design
$571.95Roland Sands Design Clarity Cam Cover - fits '01-'17 Twin Cam w/o Cam Position Sensor ( exc. '01-'08 FL) Features Allows for viewing of the internal moving engine components CNC-machined from billet aluminum Hardware included Contrast Cut™...$571.95 -
Feuling Reaper 521 Camshaft for Harley Milwaukee Eight 2017-Up
$319.95Feuling Reaper 521 Camshaft for Harley Milwaukee Eight 2017-Up Description: Produce more power and torque in the riding rpm range, improving throttle response, acceleration and fuel mileage Smooth camshaft lobe ramps are easier on valvetrain...$319.95 -
Drag Specialties Muffler Support for Harley Sportster '80 to Early '84
Drag Specialties
$103.99Drag Specialties Muffler Support for Harley Sportster '80 to Early '84 Drag Specialties Muffler Support for Harley Sportster '80 to Early '84 replaces Harley-Davidson OEM part number 65599-80A. 1" OD steel tubing Made in the U.S.A. Fitment: ...$103.99 -
Paughco - Rear Heat Shield for Drag Pipes DBC-2620
Paughco
$139.95Paughco Rear Heat Shield for Drag Pipes (DBC-2620) This heat shield is made for use with the Paughco Drag Pipes Fits Harley 70-84 FX Models w/ Swingarm Frame (DBC-2620).$139.95 -
Paughco - Rear Heat Shield for FX Models
Paughco
$139.95Paughco Front Heat Shield This heat shield is made for use with various Paughco brand exhaust systems.$139.95 -
Paughco - Rear Heat Shield
Paughco
$139.95Paughco Rear Heat Shield This heat shield is made for use with various Paughco brand exhaust systems.$139.95 -
S&S - Valve Spring Kit - Fits Harley '17-'18 M8 Models
S&S Cycle
$395.95S&S Valve Spring Kit For 2017-2018 M8 Models This replacement valve spring kit by S&S includes springs, top collars, keepers, valve seal/bottom collar; for Harley-Davidson Milwaukee Eight models between 2017-2018. Features: Include springs,...$395.95 -
Drag Specialties - Top Motor Mount - Fits Harley '86-'94 Sportster XL Models
Drag Specialties
$67.93Drag Specialties Top Motor Mount Top Motor Mount for your Harley Sportster by Drag Specialties. Features: High-quality, chrome motor mount Bolts not included unless noted Fitment: YearMakeModel 1986 - 1987 Harley-Davidson XLH...$67.93 -
Feuling - 12 Point Engine Fastener Kit - fits '18 Softail
$309.95Feuling 12 Point Engine Fastener Kit for 2018 Harley Softail Models This Primary/Transmission stainless steel kit includes primary, engine-to-transmission, derby cover, transmission clutch release cover, top bearing housing cover, and transmission top...$309.95 -
Gardner-Westcott - Rocker Box Cover Sets
Gardner-Westcott
$35.95 - $53.95Gardner-Westcott Rocker Box Cover Sets: Made in the USA '66-'81, '81-'84 Shovelhead requires drilling to 3/8 diameter hole All Sets are chrome plated except for the one polished option$35.95 - $53.95 -
HardDrive - Oil Filter Housing
HardDrive
$89.95The HarDrive Oil Filter Housing: Meets OEM specifications Chrome finish Accepts all EVO style oil filters$89.95 -
On Sale
Feuling - Oil Pumps - fits '99-'06 Twin Cam (exc. '06 Dyna)
MSRP: $507.95Now: $499.99Was: $507.95Fueling Oil Pumps : 7075 billet aluminum with military spec hard anodized, blue printed and designed for the racer The 7075 alloy is 50% harder and stronger then 6061 aluminum and holds tighter tolerance under temperature More pressure volume and...MSRP: $507.95Now: $499.99Was: $507.95 -
S&S - Billet Oil Pump Kit - fits '78-'84 Big Twin Models
S&S Cycle
$715.95The S&S Billet Oil Pump Kit: Kit includes oil pump, universal cover with top and bottom feeds, mounting bolts, supply and return gears, drive shaft with keys and snap rings, check ball and spring, pressure relief valve and spring, check ball and...$715.95 -
Colony - 8144-34 Cadmium Stock Engine Case Bolt Kit fits '79-'84 FX/FL, '84-'95 FXST, '86-'95 FLST Models
Colony Machine
MSRP: $59.60$57.93Colony - 8144-34 Cadmium Stock Engine Case Bolt Kit fits '79-'84 FX/FL, '84-'95 FXST, '86-'95 FLST Models Engine case kit includes all the necessary hardware to bolt together engine cases. Fitment: FLT 1979-1995 FX 1979-1984 FXR 1982-1994 FXST...MSRP: $59.60$57.93 -
On Sale
Colony - Acorn Engine Case Bolt Kit - Chrome fits Harley FL, FX, FXD (see desc.)
Colony Machine
MSRP: $70.95Now: $66.99Was: $70.95Engine case kit includes all the necessary hardware to bolt together engine cases. Fits: FL 1979-1984 FX 1979-1984 FXST 1984-1995 FXD 1991-1995 FLT 1979-1995 FLST 1986-1995 FXR 1982-1994MSRP: $70.95Now: $66.99Was: $70.95 -
Colony - 8141-34 Cadmium Stock Engine Case Bolt Kit fits '70-'78 FL, '71-'78 FX Models
Colony Machine
MSRP: $59.60$57.93Colony - 8141-34 Cadmium Stock Engine Case Bolt Kit fits '70-'78 FL, '71-'78 FX Models Engine case kit includes all the necessary hardware to bolt together engine cases. Fitment: FX 1971-1978 FL 1970-1978MSRP: $59.60$57.93 -
Colony - Engine Case Sprocket Shaft Seal - fits '41-54 FL, '36-'40 EL
Colony Machine
$28.99Sprocket shaft seal. Fits: EL 1936-1940 FL 1941-1954$28.99 -
Colony - Cylinder Head Engine Brace Mount - Cadmium fits '48-'65 FL
Colony Machine
MSRP: $23.04$22.99Cylinder head engine brace mount with a cadmium finish. Fits: FL 1948-1965MSRP: $23.04$22.99 -
Colony - Cylinder Head Engine Brace Mount - Parkerized fits '48-'65 FL
Colony Machine
$22.99Parkerized cylinder head engine brace mount. Fits: FL 1948-1965$22.99 -
Colony - Upper and Lower Allen Motor Mount Kit - fits '70-'84 FL, '71-'84 FX
Colony Machine
MSRP: $46.25$44.99Upper and lower allen motor mount kit Fits: FL 1970-1984 FX 1971-1984MSRP: $46.25$44.99 -
Colony - 9212-16 Cadmium Headbolt Kit fits '73-'85 Sportster Models
Colony Machine
MSRP: $52.70$51.22Colony - 9212-16 Cadmium Headbolt Kit fits '73-'85 Sportster Models Headbolt kit with a cadmium finish. Fitment: XL 1973-1985MSRP: $52.70$51.22 -
On Sale
Colony - Acorn Headbolt Cover Kit - Chrome fits '73-'84 XL
Colony Machine
MSRP: $58.35Now: $51.99Was: $56.71Colony's acorn type headbolt cover kit has a chrome finish. Fits: XL 1973-1984MSRP: $58.35Now: $51.99Was: $56.71 -
On Sale
Colony - Cylinder Head Bolt Set - Chrome fits '92-'98 FXST, FLST, FXD, FLT and '93-'04 XL
Colony Machine
MSRP: $109.98Now: $107.99Was: $132.11Colony cylinder head bolt set with a chrome finish. Fits: FXST 1992-1998 XL 1993-2004 FLST 1992-1998 FXD 1992-1998 FLT 1992-1998 UOM: 8 - SETMSRP: $109.98Now: $107.99Was: $132.11 -
On Sale
Colony - Tappet Block Screw Kit - Cadmium fits '57-'85 XL
Colony Machine
MSRP: $14.72Now: $12.99Was: $13.24Colony tappet block screw kit with a cadmium finish. Fits: XL 1957-1985MSRP: $14.72Now: $12.99Was: $13.24 -
Colony - Rocker Box Screw Kit - fits '77-'85 XL
Colony Machine
$35.78Colony rocker box screw kit without stud is available in chrome or cadmium finish Fits:XL 1977-1985$35.78 -
Colony - Rocker Box Allen Screws - Chrome fits '57-'76 XL
Colony Machine
MSRP: $36.96$32.99Rocker Box allen screws. Chrome finish Fits: XL 1957-1976MSRP: $36.96$32.99 -
Colony - 9830-28 Cadmium Rocker Box Screw Kit fits '57-'76 Sportster Models
Colony Machine
MSRP: $33.98$31.77Colony - 9830-28 Cadmium Rocker Box Screw Kit fits '57-'76 Sportster Models Rocker box screw kit with a cadmium finish. Fitment: XL 1957-1976MSRP: $33.98$31.77 -
Colony - Upper Pushrod Cover Inner fits '57-'78 XL, '41-'78 FL
Colony Machine
MSRP: $44.27$39.99Colony Upper Pushrod Cover (Inner). OEM No: 17935-66 Fits: EL 1936-1940 FL 1941-1978 FX 1971-1978 XL 1957-1978MSRP: $44.27$39.99 -
Colony - Upper Pushrod Cover Set fits '86-'90 XL Sportster
Colony Machine
MSRP: $64.78$62.96Chrome upper pushrod cover set includes 2-13/16" long clips Fits: XL 1986-1990MSRP: $64.78$62.96 -
Colony - Aluminum Alloy Pushrod Kit fits '57-'85 XL Sportster
Colony Machine
$57.95Colony pushrod sets are contructed of aluminum alloy with heat treated steel ends. Fits: XL 1957-1985 OEM No: 17904-57$57.95 -
On Sale
Colony - Acorn Tappet Base Screw Set - fits Harley '76 -Up FL, FX (see desc.) - Chrome
Colony Machine
MSRP: $33.36Now: $29.99Was: $31.19Acorn tappet base screw Screw does not have taper and fits 1976-up style lifter blocks only. Fits:FL 1976-1984FX 1976-1984FLT 1979-1998FXR 1982-1994FLST 1986-1998FXD 1991-1998MSRP: $33.36Now: $29.99Was: $31.19 -
Colony - Cam Cover Screw Set fits Harley FL, FX (see desc.) - Chrome
Colony Machine
MSRP: $17.00$15.99Colony Chrome cam cover screw set. Fits:FL 1970-1984FX 1971-1984FLT 1979-1992FXR 1982-1992FXST 1984-1992FLST 1986-1992FXD 1991-1992MSRP: $17.00$15.99
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.