Engine
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Colony - 8139-34 Motor Case Acorn Hardware Kit fits '70-'78 Big Twin Models
Colony Machine
$70.95Colony - 8139-34 Motor Case Acorn Hardware Kit fits '70-'78 Big Twin Models Features: Individual acorn bolt and nut sets for specific applications Includes washers Made in the USA Fitment 1978 Harley-Davidson Electra Glide...$70.95 -
Colony - Replacement Cylinder Stud Set fits '85-'99 Evolution Big Twin Models (OEM #16837-85B)
Colony Machine
$101.95Colony - Replacement Cylinder Stud Set fits '85-'99 Evolution Big Twin Models (OEM #16837-85B) Features: Heat-treated for strength and durability Equal or surpass original equipment Fitment 2000 Harley-Davidson FXR...$101.95 -
Colony - Cylinder Base Stud Set fits '78-'84 Big Twin Models (OEM #16837-78)
Colony Machine
$39.95Colony - Cylinder Base Stud Set fits '78-'84 Big Twin Models (OEM #16837-78) Features: Heat-treated for strength and durability Equal or surpass original equipment Made in the U.S.A. Fitment 1984 Harley-Davidson Electra Glide Special...$39.95 -
Colony - Cylinder Base Nut Kit fits '57-'85 Sportster Models (OEM #0123, 7804)
Colony Machine
$19.95Colony - Cylinder Base Nut Kit fits '57-'85 Sportster Models (OEM #0123, 7804) Features: Individual chrome bolt and nut sets for specific applications Made in the U.S.A. Fitment 1983-1985 Harley-Davidson Sportster 1000...$19.95 -
Colony - Cylinder Base Nut Kit fits '48-'84 Big Twin Models
Colony Machine
$35.95Colony - Cylinder Base Nut Kit fits '48-'84 Big Twin Models Features: For use on specific applications Made in the U.S.A. Fitment 1984 Harley-Davidson Electra Glide Special FLHX - - 1983-1984 Harley-Davidson Low Rider...$35.95 -
Colony - Cylinder Base Acorn Hardware Kit fits '78-'84 Big Twin Models
Colony Machine
$28.95Colony - Cylinder Base Acorn Hardware Kit fits '78-'84 Big Twin Models Features: Individual acorn bolt and nut sets for specific applications Made in the U.S.A. Fitment 1984 Harley-Davidson Electra Glide Special...$28.95 -
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 - 8224-8 Rocker Shaft End Plug fits '71-'84 Shovelhead & '71-'85 Sportster Models (OEM #17448-71A, 7875)
Colony Machine
$47.95Colony - 8224-8 Rocker Shaft End Plug fits '71-'84 Shovelhead & '71-'85 Sportster Models (OEM #17448-71A, 7875) Features: Complete sets stock-style replacement rocker shaft end plugs, nuts, and washers Made in the U.S.A...$47.95 -
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 - 1/2"-13 Standard Drain Plug Transmission/Motor Case/Oil Tank w/ Brass Gasket (OEM #62702-52, 707) - Chrome
Colony Machine
$9.95Colony - 1/2"-13 Standard Drain Plug Transmission/Motor Case/Oil Tank w/ Brass Gasket (OEM #62702-52, 707) - Chrome Features: Made in the USA$9.95 -
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 - 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 -
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 -
Colony - 8144-34 Cadmium Stock Engine Case Bolt Kit fits '79-'84 FX/FL, '84-'95 FXST, '86-'95 FLST Models
Colony Machine
$59.60Colony - 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...$59.60 -
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
$59.60Colony - 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 1970-1978$59.60 -
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 '66-'84 FL and '71-'84 FX
Colony Machine
$22.99Cylinder head engine brace mount. Fits: FL 1966-1984 FX 1971-1984$22.99 -
On Sale
Colony - Cylinder Head Engine Brace Mount - Cadmium fits '48-'65 FL
Colony Machine
MSRP: $23.04Now: $22.99Was: $23.04Cylinder head engine brace mount with a cadmium finish. Fits: FL 1948-1965MSRP: $23.04Now: $22.99Was: $23.04 -
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 -
On Sale
Colony - Upper and Lower Allen Motor Mount Kit - fits '70-'84 FL, '71-'84 FX
Colony Machine
MSRP: $46.25Now: $44.99Was: $46.25Upper and lower allen motor mount kit Fits: FL 1970-1984 FX 1971-1984MSRP: $46.25Now: $44.99Was: $46.25 -
Colony - 9212-16 Cadmium Headbolt Kit fits '73-'85 Sportster Models
Colony Machine
$52.70Colony - 9212-16 Cadmium Headbolt Kit fits '73-'85 Sportster Models Headbolt kit with a cadmium finish. Fitment: XL 1973-1985$52.70 -
On Sale
Colony - Acorn Headbolt Cover Kit - Chrome fits '73-'84 XL
Colony Machine
MSRP: $58.35Now: $51.99Was: $58.35Colony's acorn type headbolt cover kit has a chrome finish. Fits: XL 1973-1984MSRP: $58.35Now: $51.99Was: $58.35 -
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: $109.98Colony 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: $109.98 -
On Sale
Colony - Tappet Block Screw Kit - Cadmium fits '57-'85 XL
Colony Machine
MSRP: $14.72Now: $12.99Was: $14.72Colony tappet block screw kit with a cadmium finish. Fits: XL 1957-1985MSRP: $14.72Now: $12.99Was: $14.72 -
Colony - Rocker Box Screw Kit - fits '77-'85 XL
Colony Machine
$40.16Colony rocker box screw kit without stud is available in chrome or cadmium finish Fits:XL 1977-1985$40.16 -
On Sale
Colony - Rocker Box Allen Screws - Chrome fits '57-'76 XL
Colony Machine
MSRP: $36.96Now: $32.99Was: $36.96Rocker Box allen screws. Chrome finish Fits: XL 1957-1976MSRP: $36.96Now: $32.99Was: $36.96 -
Colony - 9830-28 Cadmium Rocker Box Screw Kit fits '57-'76 Sportster Models
Colony Machine
$33.98Colony - 9830-28 Cadmium Rocker Box Screw Kit fits '57-'76 Sportster Models Rocker box screw kit with a cadmium finish. Fitment: XL 1957-1976$33.98 -
On Sale
Colony - Upper Pushrod Cover Inner fits '57-'78 XL, '41-'78 FL
Colony Machine
MSRP: $44.27Now: $39.99Was: $44.27Colony Upper Pushrod Cover (Inner). OEM No: 17935-66 Fits: EL 1936-1940 FL 1941-1978 FX 1971-1978 XL 1957-1978MSRP: $44.27Now: $39.99Was: $44.27 -
Colony - Upper Pushrod Cover Set fits '86-'90 XL Sportster
Colony Machine
$64.78Chrome upper pushrod cover set includes 2-13/16" long clips Fits: XL 1986-1990$64.78 -
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: $33.36Acorn 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: $33.36 -
On Sale
Colony - Cam Cover Screw Set fits Harley FL, FX (see desc.) - Chrome
Colony Machine
MSRP: $17.00Now: $15.99Was: $17.00Colony Chrome cam cover screw set. Fits:FL 1970-1984FX 1971-1984FLT 1979-1992FXR 1982-1992FXST 1984-1992FLST 1986-1992FXD 1991-1992MSRP: $17.00Now: $15.99Was: $17.00
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.