Engine
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Colony - Head Bolt Kit fits '48-'84 Big Twin Models (OEM #16814-40, 6469)
Colony Machine
$85.95Colony - Head Bolt Kit fits '48-'84 Big Twin Models (OEM #16814-40, 6469) Features: Hardened to OEM specifications to prevent stretching Made in the U.S.A. Fitment 1977 Harley-Davidson 1200 Low Rider...$85.95 -
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 '54-'67 Big Twin Models (OEM #26377-54) - Chrome
Colony Machine
$13.95Colony - Oil Relief Plug fits '54-'67 Big Twin Models (OEM #26377-54) - Chrome Features: Made in the U.S.A. Fitment 1965-1967 Harley-Davidson Electra Glide FL - - 1965-1967 Harley-Davidson 1200 Electra Glide...$13.95 -
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 - 9644-2 Chrome OEM-Style Oil Pump Plug fits '84-'99 Evolution Big Twin Models (OEM #26263-80)
Colony Machine
$10.95Colony - 9644-2 Chrome OEM-Style Oil Pump Plug fits '84-'99 Evolution Big Twin Models (OEM #26263-80) Features: Made in the U.S.A. Fitment 1999 Harley-Davidson Softail Night Train FXSTB - - 1998 Harley-Davidson Road King...$10.95 -
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 -
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 OEM style kit is a complete kit that includes studs, nuts and hex...$36.95 -
Feuling - 543 Series HP+® Chain Drive Camchest Kit fits '99-'06 Twin Cam Models (Except '06 Dyna Glide)
Feuling
MSRP: $1,795.95$1,595.95Feuling - 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...MSRP: $1,795.95$1,595.95 -
V-Twin - Rocker Box Breather Kit fits '99-'16 FLT, '99-'17 FLST/FXST/FXD Models (OEM #17650-02)
V-Twin Manufacturing
$34.36V-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...$34.36 -
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
$22.39Drag 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...$22.39 -
Drag Specialties - Harley Touring Clutch Master Cylinder Cover (OEM #36700130, 41700442, 36700129, 36700094) - Chrome
Drag Specialties
$35.65 - $43.81Drag Specialties - Harley Touring Clutch Master Cylinder Cover (OEM #36700130, 41700442, 36700129, 36700094) - Chrome Features: Constructed from 6061 aluminum Includes gasket and mounting screws$35.65 - $43.81 -
V-Twin - Chrome Top Engine Mount Stabilizer fits '05-'17 Dyna Models
V-Twin Manufacturing
$149.77V-Twin - Chrome Top Engine Mount Stabilizer fits '05-'17 Dyna Models V-Twin's Chrome Finish Top Motor Mount Stabilizer Kit comes with adjustable stabilizer links and all necessary hardware to ensure a hassle-free installation. The rubber isolated links...$149.77 -
V-Twin - Black V₂ Rocker Box Set fits '92-'99 Big Twin Models
V-Twin Manufacturing
$409.61V-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...$409.61 -
V-Twin - Black V₂ Rocker Box Set fits '84-'91 Big Twin Models
V-Twin Manufacturing
$328.01V-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...$328.01 -
V-Twin - Cam Covers fit '17 & Up M8 Models
V-Twin Manufacturing
$144.54 - $144.70V-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$144.54 - $144.70 -
On Sale
S&S Cycle - 136" Big Bore Cylinder Kit fits '17 & Up M8 Engines
S&S Cycle
MSRP: $1,599.95Now: $1,439.96Was: $1,599.95S&S Cycle - 136" Big Bore Cylinder Kit fits '17 & Up M8 Engines S&S Cycle's Big Bore Cylinder & Piston Kit delivers a mighty bore increase (4.320") that, in turn, delivers a huge power increase! It is compatible with stock crankcases,...MSRP: $1,599.95Now: $1,439.96Was: $1,599.95Qty in Cart: 0Quantity:Price:MSRP: $1,599.95Now: $1,439.96Was: $1,599.95Subtotal: -
On Sale
S&S Cycle - Oil Change Kit W/ Oil Filter fits '17-'21 Harley M8 Models
S&S Cycle
$107.15 - $110.83S&S Cycle - Oil Change Kit W/ Oil Filter fits '17-'21 Harley M8 Models S&S Cycle's Oil Change Kit delivers regular viscosity and resists thermal breakdown and oxidation at elevated temperatures. It provides superior lubrication for decreased...$107.15 - $110.83 -
Drag Specialties - Oil Filter Assembly fits '40-'84 Touring Models
Drag Specialties
$101.95Drag 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...$101.95 -
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 -
On Sale
Arlen Ness - Finned Cam Cover fits '14-'21 Models W/ 111" or 116" Thunder Stroke® Engines
Arlen Ness
MSRP: $199.95Now: $179.96Was: $199.95Arlen Ness - Finned Cam Cover fits '14-'21 Models W/ 111" or 116" Thunder Stroke® Engines The Arlen Ness Finned Cam Cover has a 3D-sculpted design that matches the finned rocker box's on Indian 111" Thunderstroke engines...MSRP: $199.95Now: $179.96Was: $199.95 -
On Sale
Arlen Ness - 10-Gauge Cam Cover fits '17-'22 M8 Models
Arlen Ness
MSRP: $329.95Now: $296.96Was: $329.95Arlen Ness - 10-Gauge Cam Cover fits '17-'22 M8 Models This gauge cover is available in your choice of a chrome, black anodized w/ machined accents, titanium anodized or black anodized finish. Features Machined from 6061 T-6 forged aluminum Replaces OEM...MSRP: $329.95Now: $296.96Was: $329.95 -
Drag Specialties - Cam Cover fits '17-'22 M8 Model (Repl. OEM #25700367) - Matte Black
Drag Specialties
$122.35Drag 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...$122.35 -
Roland Sands Design - Nostalgia Points Cover fits '70-'99 Big Twin (Exc. Twin Cam Models) & '14-'21 Sportster Models (Exc. '21 Sportster S/RH 1250S Models)
Roland Sands Design
MSRP: $149.95$126.95Roland Sands Design - Nostalgia Points Cover fits '70-'99 Big Twin (Exc. Twin Cam Models) & '14-'21 Sportster Models (Exc. '21 Sportster S/RH 1250S Models) This points cover is machined from billet aluminum to exacting standards. Features Custom...MSRP: $149.95$126.95 -
Drag Specialties - Rocker Box Cover fits '66-'84 Shovelhead Models - Polished Aluminum
Drag Specialties
$883.27Drag 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...$883.27 -
Drag Specialties - Rocker Box Cover fits '66-'84 Shovelhead Models - Chrome
Drag Specialties
$913.87Drag Specialties - Rocker Box Cover fits '66-'84 Shovelhead Models - Chrome This cover comes to you in a nice chrome finish. Features Includes both front and rear pieces Fitment 1984 Harley-Davidson Electra Glide Special...$913.87 -
Drag Specialties - Replacement Gerotor Scavenge for Twin Cam 88” & 96” Applications
Drag Specialties
$60.13Drag 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...$60.13 -
Drag Specialties - Replacement Gerotor Feed for Twin Cam 88” & 96” Applications
Drag Specialties
$20.35Drag 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...$20.35 -
Feuling - Dress Up Engine Case Bolt Fastener Kit fits '00-'17 Twin Cam B Motors
Feuling
$129.95Feuling - Dress Up Engine Case Bolt Fastener Kit fits '00-'17 Twin Cam B Motors 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...$129.95 -
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 - Headbolt Kit fits '17-'22 M8 Models (3.125" Under Head Length)
Feuling
$399.95Feuling - Headbolt Kit fits '17-'22 M8 Models (3.125" Under Head Length) This kit features wide underhead flange bolts and hardened chamfered washers that provide even load distribution for the utmost surface sealing to prevent leaks. There are...$399.95 -
Feuling - ARP 12-Point Rocker Cover Fastener Bolt Kit - Evolution fits '84-'99 Big Twin Models
Feuling
$119.95Feuling - ARP 12-Point Rocker Cover Fastener Bolt Kit - Evolution fits '84-'99 Big Twin Models This kit features quality, 12-point heat-treated 8740 chrome moly steel bolts with a black oxide finish and/or Chrome depending on your selection. There are...$119.95 -
Feuling - Engine Case Dress Up Bolt Fastener Kit fits '17-'22 Touring Models
Feuling
$119.95Feuling - 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...$119.95 -
Feuling - Dress Up Engine Case Bolt Fastener Kit fits '18-'22 Softail Models
Feuling
$119.95Feuling - Dress Up Engine Case Bolt Fastener Kit fits '18-'22 Softail Models This kit features precision-rolled threads for the utmost engagement in order to prevent galling and deliver better consistent torque loading. The wide underhead flange design...$119.95
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.