Engine
8832 parts
Harley engine parts for Evo, Twin Cam, Milwaukee-Eight and Sportster motors. Jump to cams, big bore kits, heads, gaskets and seals or engine covers. Free US shipping over $100.
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Colony - 7711-18 Cadmium Cylinder Headbolt fits '31-'36 V, '37-'48 U Models
Colony Machine
$108.78Colony - 7711-18 Cadmium Cylinder Headbolt fits '31-'36 V, '37-'48 U Models Cadmium cylinder headbolt for use on 74" and 80" Side Valve motors with aluminum heads Fitment: V 1931-1936 U...$108.78 -
Colony - 7711-18-45 Cadmium Headbolt fits '29-'52 WL, '29-'73 G Models
Colony Machine
$99.22Colony - 7711-18-45 Cadmium Headbolt fits '29-'52 WL, '29-'73 G Models Cadmium headbolt, stock with aluminum heads for 45" side valve models Order washers separately Fitment: WL 1929-1952 G...$99.22 -
Colony - 7712-36 Cadmium Headbolt fits '29-'52 WL, '29-'73 G Models
Colony Machine
$107.23Colony - 7712-36 Cadmium Headbolt fits '29-'52 WL, '29-'73 G Models Cadmium headbolt for side valve models. Fitment: WL 1929-1952 G 1929-1973$107.23 -
Colony - 7713-20 Cadmium Stock 61" Cylinder Head Bolt fits '36-'39 EL Model
Colony Machine
MSRP: $75.40$74.65Colony - 7713-20 Cadmium Stock 61" Cylinder Head Bolt fits '36-'39 EL Model Cadmium 61" cylinder head bolt Fitment: EL 1936-1939MSRP: $75.40$74.65 -
Colony - 7714-20 Cadmium Stock Cylinder Head Bolt fits '40-'47 FL Model
Colony Machine
MSRP: $75.28$74.53Colony - 7714-20 Cadmium Stock Cylinder Head Bolt fits '40-'47 FL Model Cadmium stock cylinder head bolt Fitment: FL 1940-1947MSRP: $75.28$74.53 -
Colony - 7813-8 Chrome Cylinder Base Nut fits '79-'83 FLT, '78-'84 FL/FX Models
MSRP: $38.11$28.95Colony - 7813-8 Chrome Cylinder Base Nut fits '79-'83 FLT, '78-'84 FL/FX Models Chrome cylinder base nut Fitment: FLT 1979-1983 FXR 1982-1983 FL 1978-1984 FX 1978-1984MSRP: $38.11$28.95 -
Colony - Pushrod Kit fits '57-'85 Sportster w/ Solid Lifters (OEM #17904-57)
Colony Machine
$57.95Colony - Pushrod Kit fits '57-'85 Sportster w/ Solid Lifters (OEM #17904-57) Features: Aircraft-grade aluminum tubing Heat-treated steel tips$57.95 -
Colony - Cylinder Base XLR Type Nut fits '57-'84 Sportster Models
Colony Machine
$35.95Colony - Cylinder Base XLR Type Nut fits '57-'84 Sportster Models Features: For use on specific applications Made in the U.S.A. Fit$35.95 -
Thrashin Supply Co. - Gen 2 Smooth M8 Cam Cover fits '24+ Touring Model
Thrashin Supply
$114.95 - $124.95Thrashin Supply Co. - Gen 2 Smooth M8 Cam Cover fits '24+ Touring Model Features: Slim design and cut away corner for improved floorboard clearance Hardware included$114.95 - $124.95 -
Colony - Motor Case Stud Kit fits '79-'95 Big Twin Models - Cadmium
Colony Machine
$57.95Colony - Motor Case Kit fits '79-'95 Big Twin Models - Cadmium Features: Contain all necessary hardware to bolt together stock motor cases Made in the U.S.A.$57.95 -
Colony - Motor Case Stud Kit fits '65-'69 Shovelhead Model (OEM #24806-36, 24809-30)
Colony Machine
$57.95Colony - Motor Case Kit fits '65-'69 Shovelhead Model (OEM #24806-36, 24809-30) Features: Contain all necessary hardware to bolt together stock motor cases Made in the U.S.A.$57.95 -
Colony - Motor Case Stud Kit fits '48-'64 Panhead Model (OEM #24806-36, 24809-30)
Colony Machine
$57.95Colony - Motor Case Kit fits '48-'64 Panhead Model (OEM #24806-36, 24809-30) Features: Contain all necessary hardware to bolt together stock motor cases Made in the U.S.A.$57.95 -
Drag Specialties - Replacement Oil Filler Plug
Drag Specialties
$14.79Drag Specialties - Replacement Oil Filler Plug Features: Replacement oil filler plug for oil tanks$14.79 -
Colony - Head Bolt Kit fits '57-'72 Sportster Models (OEM #4714W)
Colony Machine
$69.95Colony - Head Bolt Kit fits '57-'72 Sportster Models (OEM #4714W) Features: Hardened to OEM specifications to prevent stretching Made in the U.S.A.$69.95 -
Burly Brand - Black Brawler Kit fits M8 Softail Models
Burly Brand
$252.95 - $351.95Burly Brand - Black Brawler Kit fits M8 Softail Models Features: Designed to grind down during impacts to prevent bike from catching and flipping Functions as a highway bar for a secure grip and...$252.95 - $351.95 -
Colony - Replacement Cylinder Stud Set fits '99-'17 Twin Cam Models (OEM #16834-99/A)
Colony Machine
$88.95Colony - Replacement Cylinder Stud Set fits '99-'17 Twin Cam Models (OEM #16834-99/A) Features: Heat-treated for strength and durability Equal or surpass original equipment$88.95 -
Colony - Allen Oil Pump Plug Kit fits Big Twin Models (OEM #26263-80)
Colony Machine
$10.95Colony - Allen Oil Pump Plug Kit fits Big Twin Models (OEM #26263-80) Features: Plug and plug kits designed for a variety of Harley-Davidson® oil systems Complete with washers (or O-rings if...$10.95 -
Colony - Motor Mount Hardware Kit for '84-'99 FXST/FLST
Colony Machine
$51.95Colony - Motor Mount Hardware Kit for '84-'99 FXST/FLST Features: Made in the U.S.A. Replacement Part for OEM: 3512$51.95 -
Colony - Brass Intake Manifold Seal fits '40-'54 Big Twin Models (OEM #27059-40)
Colony Machine
$24.95Colony - Brass Intake Manifold Seal fits '40-'54 Big Twin Models (OEM #27059-40) Features: Precision machined duplicates of original intake manifold seals, nuts and nipples Made in the U.S.A...$24.95 -
Colony - Intake Manifold Nipple fits '40-'54 Big Twin Models (OEM #27039-48)
Colony Machine
$21.95Colony - Intake Manifold Nipple fits '40-'54 Big Twin Models (OEM #27039-48) Features: Precision machined duplicates of original intake manifold seals, nuts and nipples Made in the U.S.A.$21.95 -
Colony - Rocker Arm Stud Kit fits '48-'65 Panhead Model (OEM #17647-48) - Parkerized
Colony Machine
$37.95Colony - Rocker Arm Stud Kit fits '48-'65 Panhead Model (OEM #17647-48) - Parkerized Features: High-quality studs and flexloc nuts Eight studs and nuts cover one cylinder head$37.95 -
Colony - Rocker Arm Nut Kit fits '48-'65 Panhead Model (OEM #7727) - Cadmium Plated
Colony Machine
$18.95Colony - Rocker Arm Nut Kit fits '48-'65 Panhead Model (OEM #7727) - Cadmium Plated Features: High-quality studs and flexloc nuts Eight studs and nuts cover one cylinder head$18.95 -
Colony - 8732-24 Chrome Aluminum Valve Cover Screw Kit fits '48-'65 Panhead Model (OEM #3578W)
Colony Machine
$45.95Colony - 8732-24 Chrome Aluminum Valve Cover Screw Kit fits '48-'65 Panhead Model (OEM #3578W) Features: Exact duplicate of original special screws used on Panhead valve covers Made in the U.S.A...$45.95 -
Colony - 8734-24 Chrome Valve Cover Screw Kit fits '48-'65 Panhead Model (OEM #3565W)
Colony Machine
$45.95Colony - 8734-24 Chrome Valve Cover Screw Kit fits '48-'65 Panhead Model (OEM #3565W) Features: Exact duplicate of original special screws used on Panhead valve covers$45.95 -
Colony - Rocker Cover Nut Strip Kit fits '36-'47 Big Twin Models (OEM #17535-38, 17537-38)
Colony Machine
$67.95Colony - Rocker Cover Nut Strip Kit fits '36-'47 Big Twin Models (OEM #17535-38, 17537-38) Features: Eight strips, four gaskets and 34 screws are included in the kit All holes are tapped for...$67.95 -
Colony - 8165-19 Cadmium Motor Mount Bolt Kit fits '36-'69 Big Twin Models (OEM #24791-36, 24794-36)
Colony Machine
$64.95Colony - 8165-19 Cadmium Motor Mount Bolt Kit fits '36-'69 Big Twin Models (OEM #24791-36, 24794-36) Features: Kit Includes top motor mount bolt, two 3/8"-24 x 31/4" bolts, two front engine...$64.95 -
Colony - Motor Case Stud Kit fits '40-'47 Knucklehead Model (OEM #24806-36, 24809-30)
Colony Machine
$57.95Colony - Motor Case Kit fits '40-'47 Knucklehead Model (OEM #24806-36, 24809-30) Features: Contain all necessary hardware to bolt together stock motor cases Made in the U.S.A.$57.95 -
Colony - 9883-20 Chrome Motor Case Bolt Kit fits '96-'98 Evolution Big Twin Models (OEM #3398, 3504A)
Colony Machine
$48.95Colony - 9883-20 Chrome Motor Case Bolt Kit fits '96-'98 Evolution Big Twin Models (OEM #3398, 3504A) Features: Includes all necessary hardware for bolting together the motor case Made in t$48.95 -
Colony - Oil Tappet Screen and O-Ring fits '00-'17 Softail Models (OEM #11301, 24983-00)
Colony Machine
$5.95Colony - Oil Tappet Screen and O-Ring fits '00-'17 Softail Models (OEM #11301, 24983-00) Features: High-quality replacement Made in the USA$5.95 -
Colony - Hydraulic Pushrods fits '53-'65 Panhead w/ Hydraulic Lifters (OEM #17905-35B)
Colony Machine
$74.95Colony - Hydraulic Pushrods fits '53-'65 Panhead w/ Hydraulic Lifters (OEM #17905-35B) Features: Aircraft-grade aluminum tubing Heat-treated steel tips$74.95 -
Colony - 11/16"-16 Crankcase/Oil Tank Hex Timing Plug fits '86-'95 Sportster Models (OEM #2326-38)
Colony Machine
$8.95Colony - 11/16"-16 Crankcase/Oil Tank Hex Timing Plug fits '86-'95 Sportster Models (OEM #2326-38) Features: Timing plugs in a variety of styles and fitments Include kit for stripped timing plug...$8.95 -
Colony - 8140-34 Motor Case Studs fits '70-'78 Big Twin Models (OEM #24806-36, 24815-40, 4432)
Colony Machine
$64.95Colony - 8140-34 Motor Case Studs fits '70-'78 Big Twin Models (OEM #24806-36, 24815-40, 4432) Features: Individual chrome bolt and nut sets for specific applications$64.95 -
Colony - Tappet Oil Screen Plug Kit fits '70-'80 Big Twin Models (OEM #657)
Colony Machine
$11.95Colony - Tappet Oil Screen Plug Kit fits '70-'80 Big Twin Models (OEM #657) Features: Plug and plug kits designed for a variety of Harley-Davidson® oil systems Complete with washers (or O-rings...$11.95 -
Colony - Motor Mount Kit fits '70-'84 Big Twin Models (OEM #4401W, 4435W)
Colony Machine
$38.95Colony - Motor Mount Kit fits '70-'84 Big Twin Models (OEM #4401W, 4435W) Features: Individual chrome bolt and nut sets for specific applications Made in the U.S.A.$38.95 -
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$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$101.95 -
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.$19.95 -
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.$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.$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 <$27.95
About Engine
Harley Engine Parts for Rebuilds and Performance
From a fresh gasket set to a full big bore build, we stock the Harley engine parts you need to rebuild, maintain or wake up your motor. Match parts to your engine: Evo, Twin Cam, Milwaukee-Eight and Sportster parts don't swap across.
Shop Engine Parts
- Camshafts
- Big bore kits
- Cylinders
- Heads
- Pushrods
- Lifters
- Rockers
- Gaskets & seals
- Oil pumps
- Oil filters
- Motor mounts
- Engine covers
We carry engine parts from S&S Cycle, Drag Specialties, V-Twin Mfg, Alloy Art, HardDrive and Rocker Lockers. Pair your build with an air cleaner and exhaust that let it breathe.
Not Sure It Fits?
Year, model and engine all matter, and plenty of parts look the same but aren't. If you can't tell whether something fits your bike, hit us up with your year and model and we'll check it before you order.