Engine
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Colony - Oil Relief Plug fits '68-'80 Big Twin Models (OEM #26377-68)
Colony Machine
$13.95Colony - Oil Relief Plug fits '68-'80 Big Twin Models (OEM #26377-68) Features: Made in the U.S.A. Fitment$13.95 -
Colony - 8110-12 Chrome Oil Pump Mounting Hardware fits '36-'67 Big Twin Models (OEM #7035, 27691)
Colony Machine
$6.95Colony - 8110-12 Chrome Oil Pump Mounting Hardware fits '36-'67 Big Twin Models (OEM #7035, 27691) Features: 1/4"-24 hard-to-find hex nuts come in a six-pack OEM style kit is a complete kit$6.95 -
Colony - 8740-19 Chrome Oil Pump Mounting Hardware fits '36-'67 Big Twin Models (OEM #24819-36, 24820-36, 3834)
Colony Machine
$36.95Colony - 8740-19 Chrome Oil Pump Mounting Hardware fits '36-'67 Big Twin Models (OEM #24819-36, 24820-36, 3834) Features: 1/4"-24 hard-to-find hex nuts come in a six-pack$36.95 -
Feuling - 543 Series HP+® Chain Drive Camchest Kit fits '99-'06 Twin Cam Models (Except '06 Dyna Glide)
Feuling
$1,649.95Feuling - 543 Series HP+® Chain Drive Camchest Kit fits '99-'06 Twin Cam Models (Except '06 Dyna Glide) Features: For '99-'06 Twin Cam except for '06 Dyna All necessary components from...$1,649.95 -
V-Twin - Rocker Box Breather Kit fits '99-'16 FLT, '99-'17 FLST/FXST/FXD Models (OEM #17650-02)
V-Twin Mfg
$46.83V-Twin - Rocker Box Breather Kit fits '99-'16 FLT, '99-'17 FLST/FXST/FXD Models (OEM #17650-02) Rocker box breather kit is for Twin Cam models Please Note: Sold each, however 2 kits are required per...$46.83 -
Drag Specialties - Harley Touring Clutch Master Cylinder Cover (OEM #36700130, 41700442, 36700129, 36700094) - Chrome
Drag Specialties
$44.47 - $56.13Drag Specialties - Harley Touring Clutch Master Cylinder Cover (OEM #36700130, 41700442, 36700129, 36700094) - Chrome Features: Constructed from 6061 aluminum Includes gasket and mounting...$44.47 - $56.13 -
V-Twin - Black V₂ Rocker Box Set fits '92-'99 Big Twin Models
V-Twin Mfg
$548.54V-Twin - Black V₂ Rocker Box Set fits '92-'99 Big Twin Models ViTwin's V₂ Rocker Box Set is an exact, machined die-cast cover. The set is complete with six pieces, including all of the necessary...$548.54 -
V-Twin - Black V₂ Rocker Box Set fits '84-'91 Big Twin Models
V-Twin Mfg
$388.70V-Twin - Black V₂ Rocker Box Set fits '84-'91 Big Twin Models ViTwin's V₂ Rocker Box Set is an exact, machined die-cast cover. The set is complete with six pieces, including all of the necessary...$388.70 -
V-Twin - Cam Covers fit '17 & Up M8 Models
V-Twin Mfg
$163.57 - $168.64V-Twin - Cam Covers fit '17 & Up M8 Models Available in your choice of a chrome, black or titanium finish. Fitment FLST 2018-UPFLT 2017-UPFXST 2018-UP$163.57 - $168.64 -
Drag Specialties - Oil Filter Assembly fits '40-'84 Touring Models
Drag Specialties
$152.20Drag Specialties - Oil Filter Assembly fits '40-'84 Touring Models This assembly can be dismantled, and the filter can be replaced with the Drop-In Filter Element DS275202 (See 'Also Bought'...$152.20 -
Performance Machine - Scallop Cam Cover fits '01-'17 Twin Cam Models W/O Cam Position Cover
Performance Machine
$398.95 - $438.95Performance Machine - Scallop Cam Cover fits '01-'17 Twin Cam Models W/O Cam Position Cover The Formula Cam Covers from Performance Machine feature a special polycarbonate lens for a glimpse inside...$398.95 - $438.95 -
Drag Specialties - Cam Cover fits '17-'22 M8 Model (Repl. OEM #25700367) - Matte Black
Drag Specialties
$153.65Drag Specialties - Cam Cover fits '17-'22 M8 Model (Repl. OEM #25700367) - Matte Black This cam cover accepts OEM gaskets and mounting hardware. Features Die-cast aluminum construction Accepts$153.65 -
Drag Specialties - Rocker Box Cover fits '66-'84 Shovelhead Models - Polished Aluminum
Drag Specialties
$784.35Drag Specialties - Rocker Box Cover fits '66-'84 Shovelhead Models - Polished Aluminum This cover comes to you in a stunning polished aluminum finish. Features Includes both front and rear...$784.35 -
Drag Specialties - Oil Pump Assembly fits '73-'91 Big Twin Models
Drag Specialties
$294.63Drag Specialties - Oil Pump Assembly fits '73-'91 Big Twin Models This is a high-quality replacement cast aluminum pump body with steel gears and a shaft. Features Raw cast aluminum...$294.63 -
Drag Specialties - Replacement Gerotor Scavenge for Twin Cam 88” & 96” Applications
Drag Specialties
$88.99Drag Specialties - Replacement Gerotor Scavenge for Twin Cam 88” & 96” Applications Fitment 2016-2017 Harley-Davidson Low Rider S FXDLS$88.99 -
Feuling - Ironhead Stainless Steel Head Bolt Kit fits '57-'73 Sportster Models - Silver
Feuling
$119.95Feuling - Ironhead Stainless Steel Head Bolt Kit fits '57-'73 Sportster Models - Silver This kit features precision rolled threads for the utmost engagement. This prevents galling and promotes more...$119.95 -
Feuling - Engine Case Dress Up Bolt Fastener Kit fits '17-'22 Touring Models
Feuling
$129.95Feuling - Engine Case Dress Up Bolt Fastener Kit fits '17-'22 Touring Models This kit features precision-rolled threads for the utmost engagement in order to stop galling and deliver better regular...$129.95 -
Feuling - Gorilla Rocker Shaft and Bolt Kit fits '99-'01 Harley Model
Feuling
$279.95Feuling - Gorilla Rocker Shaft and Bolt Kit fits '99-'01 Harley Model This kit is recommended for all Twin Cam engines, especially for engines running higher lift camshafts and heavier valve springs...$279.95 -
Feuling - 12-Point External Engine Fastener Kit fits '18-'22 Softail Models
Feuling
$399.95Feuling - 12-Point External Engine Fastener Kit fits '18-'22 Softail Models This kit comes with a cam cover, lifter covers, rocker covers, case bolts, washers, center head bolts/horn/engine mount,...$399.95 -
James Gaskets - Cam Change Gasket Kit fits '17-'21 M8 Softail Models
James Gaskets
$48.95James Gaskets - Cam Change Gasket Kit fits '17-'21 M8 Softail Models This kit comes with all of the required gaskets, seals, O-rings and cork washers for doing a cam change. Fitment 2020,...$48.95 -
James Gaskets - James Rubber Rocker Box Gasket fits '86-'90 XL 883 Models
James Gaskets
$68.95James Gaskets - James Rubber Rocker Box Gasket fits '86-'90 XL 883 Models This kit comes complete with all of the necessary inner, upper and lower rocker box gaskets and bolt washers. Made in the U...$68.95 -
James Gaskets - James Rubber Rocker Box Gasket Kit W/ RCM Base Gaskets fits '04-'06 Sportster Models
James Gaskets
$91.95James Gaskets - James Rubber Rocker Box Gasket Kit W/ RCM Base Gaskets fits '04-'06 Sportster Models This kit comes complete with all of the necessary inner, upper and lower rocker box gaskets and...$91.95 -
James Gaskets - James Rocker Box Cover Gasket and Seal Kit fits '17-'21 M8 Softail Models
James Gaskets
$64.95James Gaskets - James Rocker Box Cover Gasket and Seal Kit fits '17-'21 M8 Softail Models This kit comes complete with all of the necessary inner, upper and lower rocker box gaskets and bolt washers...$64.95 -
James Gaskets - Standard Bore Metal Base Gaskets fits '86-'21 XL Models (Exc. '21 Sportster S/RH1250S)
James Gaskets
$44.95James Gaskets - Standard Bore Metal Base Gaskets fits '86-'21 XL Models (Exc. '21 Sportster S/RH1250S) These genuine James Gaskets base gaskets have a steel base with silicone beading on both sides...$44.95 -
Alloy Art - Raw M8CC Comp Cam Cover fits '17 & Up M8 Models
Alloy Art
$411.95Alloy Art - Raw M8CC Comp Cam Cover fits '17 & Up M8 Models This Cam Cover has a low-profile design, which brings in greater diameter headers even closer for more ground clearance...$411.95 -
Kodlin - Black Rear Engine Guards fits '18-'25 M8 Softail Models
Kodlin
$299.99Kodlin - Black Rear Engine Guards fits '18-'25 M8 Softail Models These black rear engine guards are built from steel and come with an oil cover and black crash pads. NOTE: Does not fit with stock...$299.99 -
S&S Cycle - 4⅝" Stroke Flywheel Assembly W/ Balancer Gear & Full Wrist Pin fits '17-'20 M8 Softail Models
S&S Cycle
MSRP: $1,999.95$1,995.95S&S Cycle - 4⅝" Stroke Flywheel Assembly W/ Balancer Gear & Full Wrist Pin fits '17-'20 M8 Softail Models This Stroke Flywheel Assembly W/ Balancer Gear & Full Wrist Pin comes with S&S high-strength...MSRP: $1,999.95$1,995.95 -
S&S Cycle - Chrome Die-Cast Rocker Box fits '99-'17 Twin Cam Motors
S&S Cycle
$1,091.95S&S Cycle - Chrome Die-Cast Rocker Box fits '99-'17 Twin Cam Motors Features Positive O-ring seal ensures leak-free operation Include rocker boxes,$1,091.95 -
S&S Cycle - Silver Powdercoat 95" Big Bore Kit fits '99-'06 Twin Cam Engines (3.875" Bore, 4" Stroke, 9.7:1 Comp. W/ Stock Heads)
S&S Cycle
$1,287.95S&S Cycle - Silver Powdercoat 95" Big Bore Kit fits '99-'06 Twin Cam Engines (3.875" Bore, 4" Stroke, 9.7:1 Comp. W/ Stock Heads) This Big Bore Kit produces outstanding outcomes with stock cylinder...$1,287.95 -
S&S Cycle - Stone Gray Powdercoat 117" Big Bore Kit fits '07-'17 Twin Cam Engines (4.125" Bore, 4⅜" Stroke, 10.5:1 Comp. W/ Stock Heads)
S&S Cycle
$1,643.95S&S Cycle - Stone Gray Powdercoat 117" Big Bore Kit fits '07-'17 Twin Cam Engines (4.125" Bore, 4⅜" Stroke, 10.5:1 Comp. W/ Stock Heads) This Big Bore Kit produces outstanding outcomes with stock...$1,643.95 -
S&S Cycle - Black Powdercoat 117" Big Bore Kit fits '07-'17 Twin Cam Engines (4.125" Bore, 4⅜" Stroke, 10.5:1 Comp. W/ Stock Heads)
S&S Cycle
$1,643.95S&S Cycle - Black Powdercoat 117" Big Bore Kit fits '07-'17 Twin Cam Engines (4.125" Bore, 4⅜" Stroke, 10.5:1 Comp. W/ Stock Heads) This Big Bore Kit produces outstanding outcomes with stock...$1,643.95 -
S&S Cycle - 4⅛" Bore Cylinders fits '07-'17 Twin Cam Engines W/ 124" Hot Set Up Kits
S&S Cycle
MSRP: $1,058.95$924.95S&S Cycle - 4⅛" Bore Cylinders fits '07-'17 Twin Cam Engines W/ 124" Hot Set Up Kits These Cylinders are built for 124" Hot Set Up Kits utilized in '99-'17 Twin Cam models and are bored slightly...MSRP: $1,058.95$924.95 -
S&S Cycle - 3⅝" Big Bore Cylinder & Big Bore Piston Kit fits '66-'84 Shovelhead Engines
S&S Cycle
MSRP: $1,999.95$1,995.95S&S Cycle - 3⅝" Big Bore Cylinder & Big Bore Piston Kit fits '66-'84 Shovelhead Engines This kit can be used to construct an 88" engine, or to replace the cylinders and piston in an engine with an...MSRP: $1,999.95$1,995.95 -
S&S Cycle - Wrinkle Black 80" Bore Cylinder & Piston Kit fits '84-'00 Evolution Big Twin Models W/ Stock or S&S Heads
S&S Cycle
$1,231.95S&S Cycle - Wrinkle Black 80" Bore Cylinder & Piston Kit fits '84-'00 Evolution Big Twin Models W/ Stock or S&S Heads S&S Cycle's 80" Bore Cylinder & Piston Kits feature S&S 3½" bore cylinders and...$1,231.95 -
S&S Cycle - Wrinkle Black 100" Bolt-In Sidewinder® 4" Big Bore Kit fits '99-'06 Twin Cam Engines
S&S Cycle
MSRP: $1,550.95$1,540.95S&S Cycle - Wrinkle Black 100" Bolt-In Sidewinder® 4" Big Bore Kit fits '99-'06 Twin Cam Engines This Big Bore Kit has a 10.5:1 compression ratio (W/ stock 85cc heads) that will transform your...MSRP: $1,550.95$1,540.95 -
S&S Cycle - Silver 110" Bolt-In Sidewinder® 4" Big Bore Kit fits '07-'17 Twin Cam Engines
S&S Cycle
$1,540.95S&S Cycle - Silver 110" Bolt-In Sidewinder® 4" Big Bore Kit fits '07-'17 Twin Cam Engines This Big Bore Kit has a 10.5:1 compression ratio (W/ stock 85cc heads) that will transform your engine into...$1,540.95 -
S&S Cycle - Natural Finish Evolution-Style Aluminum Cylinders fits '84-'99 Evolution Big Twin Engines
S&S Cycle
$840.95S&S Cycle - Natural Finish Evolution-Style Aluminum Cylinders fits '84-'99 Evolution Big Twin Engines S&S Cycle's Evolution-Style Aluminum Cylinders are stock replacement cylinders featuring a 3½"...$840.95 -
S&S Cycle - Silver XL883 to 1200 Conversion Kit fits '86-'20 XL 883 Models
S&S Cycle
$1,128.95S&S Cycle - Silver XL883 to 1200 Conversion Kit fits '86-'20 XL 883 Models This conversion kit installs in no time at all since the pistons are already fit to the cylinders, making them prepared for...$1,128.95 -
S&S Cycle - 4⅛" Bore Cylinders fits '99-'06 Twin Cam Engines W/ 124" Hot Set Up Kits
S&S Cycle
$924.95S&S Cycle - 4⅛" Bore Cylinders fits '99-'06 Twin Cam Engines W/ 124" Hot Set Up Kits These Bore Cylinders are built for 124" Hot Set Up Kits utilized in '99-'17 Twin Cam models and are bored...$924.95 -
S&S Cycle - Black Powdercoat Evolution-Style Aluminum Cylinders W/ Machined Fin Edges fits '84-'99 Evolution Big Twin Engines
S&S Cycle
$840.95S&S Cycle - Black Powdercoat Evolution-Style Aluminum Cylinders W/ Machined Fin Edges fits '84-'99 Evolution Big Twin Engines S&S Cycle's Evolution-Style Aluminum Cylinders are stock replacement...$840.95
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.