Engine
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Colony - 9000-4 Acorn-Style Head Bolt Cover fits '84-'E85 Evolution Big Twin Models
Colony Machine
$27.95Colony - 9000-4 Acorn-Style Head Bolt Cover fits '84-'E85 Evolution Big Twin Models Features: Cover the unsightly factory 12-point headbolts; come complete with setscrews 7/16" size Fitment 1985 Harley-Davidson Fat Bob...$27.95 -
Colony - 8441-1 5/8"-18 Crankcase/Oil Tank Cap Timing Plug fits '86-'95 Sportster Models
Colony Machine
$7.95Colony - 8441-1 5/8"-18 Crankcase/Oil Tank Cap Timing Plug fits '86-'95 Sportster Models Features: Timing plugs in a variety of styles and fitments Include kit for stripped timing plug holes Fitment 2000 Harley-Davidson FXR...$7.95 -
Colony - 11/16"-16 Acorn/Oversized Timing Plug Crankcase/Oil Tank with Special Tap fits '86-'95 Sportster Models
Colony Machine
$51.95Colony - 11/16"-16 Acorn/Oversized Timing Plug Crankcase/Oil Tank with Special Tap fits '86-'95 Sportster Models Features: Timing plugs in a variety of styles and fitments Include kit for stripped timing plug...$51.95 -
Colony - 5/8"-18 Hex Crankcase Timing Plug (OEM #704, 720)
Colony Machine
$8.95Colony - 5/8"-18 Hex Crankcase Timing Plug (OEM #704, 720) Features: Timing plugs in a variety of styles and fitments Include kit for stripped timing plug holes Fitment 1983-1985 Harley-Davidson Sportster 1000...$8.95 -
Colony - Oil Vent Fitting fits '36-'64 Big Twin Models (OEM #63533-15) - Chrome
Colony Machine
$17.95Colony - Oil Vent Fitting fits '36-'64 Big Twin Models (OEM #63533-15) - Chrome Features: Chrome-plated oil line fittings are exact duplicates of original types Can be used with braided stainless steel or stock rigid steel lines Made in the U.S.A...$17.95 -
Colony - Pushrod Tube Cover Conversion Kit fits '91-'03 Sportster Models
Colony Machine
$155.95Colony - Pushrod Tube Cover Conversion Kit fits '91-'03 Sportster Models Features: Complete kit includes four adapter rings, four inner tubes, four bottom tubes, four clips, four spring covers, four springs, four spring washers and all seals For use...$155.95 -
Colony - 9876-2 Chrome Oil Screen Plug fits '70-'80 Big Twin Models (OEM #657)
Colony Machine
$10.95Colony - 9876-2 Chrome Oil Screen Plug fits '70-'80 Big Twin Models (OEM #657) Features: Oil Screen plug for Big Twin models Made in the USA Fitment 1984 Harley-Davidson Electra Glide Special...$10.95 -
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 1984 Harley-Davidson Electra Glide Special FLHX - - 1983-1984 Harley-Davidson Low Rider...$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 that includes studs, nuts and hex...$6.95 -
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 top-to-bottom of the camchest Provide maximum...$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 motor Fitment FLT 1999-2016 FLST 1999-2017 FXST...$46.83 -
Drag Specialties - Rear Brake Master Cylinder Cover Kit fits '99-'04 Touring, '00-'05 Softail Models (OEM#s 45057-99, 42455-99, 45042-99,45149-99C)
Drag Specialties
$27.25Drag Specialties - Rear Brake Master Cylinder Cover Kit fits '99-'04 Touring, '00-'05 Softail Models (OEM#s 45057-99, 42455-99, 45042-99,45149-99C) Features: Includes gasket and mounting screws Fitment 2005 Harley-Davidson Softail...$27.25 -
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 screws$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 gaskets for installation on both heads. Fitment FLT...$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 gaskets for installation on both heads. Fitment FLT...$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 -
Feuling - Fast Install Push Rods fits '99-'17 Twin Cam Models
Feuling
$221.95Feuling - Fast Install Push Rods fits '99-'17 Twin Cam Models FEULING® FAST Install adjustable pushrods are made from the same great design as the regular install FEULING® adjustable pushrods but feature a slightly shorter tapered tube and come...$221.95 -
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' section). Available in your choice of black or chrome finish...$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 the machine! Available in your choice of a Chrome,...$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 OEM-style time...$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 - 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 2015-2016 Harley-Davidson Road Glide Special...$88.99 -
Drag Specialties - Replacement Gerotor Feed for Twin Cam 88” & 96” Applications
Drag Specialties
$28.57Drag Specialties - Replacement Gerotor Feed for Twin Cam 88” & 96” Applications Fitment 2016-2017 Harley-Davidson Low Rider S FXDLS 2015-2016 Harley-Davidson Road Glide Special...$28.57 -
Feuling - Panhead/Shovelhead Stainless Steel Head Bolt Kit - Silver
Feuling
$129.95Feuling - Panhead/Shovelhead Stainless Steel Head Bolt Kit - Silver This kit features precision rolled threads for the best engagement possible. This will prevent galling and instead promote better, regular torque loading. Features Tensile...$129.95 -
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 consistent torque loading. Features Tensile...$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 torque loading. The wide underhead flange design gives...$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. Features Gas nitrided and final surface...$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, oil line mounting bases, head mount bolts, head...$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, 2022 Harley-Davidson CVO Tri Glide...$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.S.A...$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 bolt washers. Made in the U.S.A...$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. Made in the U.S.A. Fitment 2020,...$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. NOTE: U.S. Patent #5,615,898 and #363,979...$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. Features Large breather fitting option allows for greater...$411.95 -
Kodlin - Black Rear Engine Guards fits '18-'23 M8 Softail Models
Kodlin
$299.99Kodlin - Black Rear Engine Guards fits '18-'23 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 exhaust. Spacing and fitment varies depending on...$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 connecting rods that are ideal for...MSRP: $1,999.95$1,995.95 -
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 cylinder heads. It comes complete with cylinders,...$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 under the normal size and are not honed. NOTE:...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 existing S&S® stock bore stroker kit...MSRP: $1,999.95$1,995.95 -
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 engine into a street-ready and reliable machine...MSRP: $1,550.95$1,540.95
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.