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 - 2083-8 Cylinder Base Stud Set fits '99-'17 FXD, '99-Up FLT/FLST/FXST Models (OEM #16834-99)
Colony Machine
$97.25Colony - 2083-8 Cylinder Base Stud Set fits '99-'17 FXD, '99-Up FLT/FLST/FXST Models (OEM #16834-99) Cylinder base stud set features OEM style heat treated alloy steel studs to replace original...$97.25 -
OE - EFI O-Ring and Gasket Kit fits '02-'07 FLT Model (OEM #27655-06)
$67.61OE - EFI O-Ring and Gasket Kit fits '02-'07 FLT Model (OEM #27655-06) EFI o-ring and gasket kit includes sensor o-rings, screws, injector clips and fuel tube seal retainer. Fitment: FLT...$67.61 -
Motorshop - Connecting Rod Roller Set fits '36-'52 WR Model
Motorshop
$53.33Motorshop - Connecting Rod Roller Set fits '36-'52 WR Model WR connecting rod roller set includes 18 long and 36 short rollers. For use with WR cage set. Fitment: WR 1936-1952$53.33 -
Colony - 37-8606 1/4"-20 x 1-1/4" Hex Cap Bolt (OEM #3993)
Colony Machine
MSRP: $23.86$22.31Colony - 37-8606 1/4"-20 x 1-1/4" Hex Cap Bolt (OEM #3993) Hex cap bolt 1/4"-20 x 1-1/4", chrome finish, coarse thread. Fitment: All ModelsMSRP: $23.86$22.31 -
Motorshop - Oil Pump Feed Idler Gear fits '48-'61 FL Model (OEM #26317-48)
Motorshop
MSRP: $40.51$39.70Motorshop - Oil Pump Feed Idler Gear fits '48-'61 FL Model (OEM #26317-48) Oil Pump Feed Idler Gear. This gear has a 1/4" extended bearing area past the level of the gear that extends into the...MSRP: $40.51$39.70 -
V-Twin - Oil Pump Plug fits '84-'98 FXST, '82-'94 FXR, '57-'76 Sportster Models
V-Twin Mfg
$10.89V-Twin - Oil Pump Plug fits '84-'98 FXST, '82-'94 FXR, '57-'76 Sportster Models Oil pump plug. Fitment: FXST 1984-1998 UL 1937-1948 FXR 1982-1994 FLT 1979-1998 FX 1971-1984 EL 1936-1940 FL 1941-1984...$10.89 -
Motorshop - Pinion Shaft End Nut fits '54-'56 K, '57-'80 Sportster Models (OEM #8011)
Motorshop
$33.54Motorshop - Pinion Shaft End Nut fits '54-'56 K, '57-'80 Sportster Models (OEM #8011) Pinion shaft end nut.Used on tapered end of pinion shaft when installing shaft into flywheel. Fitment: XL...$33.54 -
Colony - 7609-6 Rocker Lock fits '46-'48 UL/FL Models
Colony Machine
$25.30Colony - 7609-6 Rocker Lock fits '46-'48 UL/FL Models Spring fork rocker lock, 6 piece set Fitment: UL 1946-1948 FL 1946-1948$25.30 -
Colony - 7610-4 Rocker Bushing Set Long fits '46-'48 UL/FL Models
Colony Machine
$60.34Colony - 7610-4 Rocker Bushing Set Long fits '46-'48 UL/FL Models Spring Fork rocker bushing set Fitment: UL 1946-1948 FL 1946-1948$60.34 -
Colony - 7611-2 Rocker Bushing Tool fits '37-'48 UL, '36-'40 EL, '30-'52 WL Models
Colony Machine
$30.70Colony - 7611-2 Rocker Bushing Tool fits '37-'48 UL, '36-'40 EL, '30-'52 WL Models Spring Fork rocker bushing tool Fitment: UL 1937-1948 G 1930-1957 EL 1936-1940 FL 1941-1948 VL...$30.70 -
Colony - 7613-2 Cadmium Acorn Nut and Retainer Kit fits '37-'48 UL, '36-'57 G, '36-'52 WL Models (OEM #45647-30)
Colony Machine
$31.72Colony - 7613-2 Cadmium Acorn Nut and Retainer Kit fits '37-'48 UL, '36-'57 G, '36-'52 WL Models (OEM #45647-30) Spring fork chrome acorn nut and cadmium retainer set Fitment: UL 1937-1948 G...$31.72 -
Colony - 7614-4 Cadmium Intake Manifold Nuts fits '53-'56 K, '41-'54 FL, '40-'52 EL Models (OEM #27052-40)
Colony Machine
MSRP: $54.88$38.79Colony - 7614-4 Cadmium Intake Manifold Nuts fits '53-'56 K, '41-'54 FL, '40-'52 EL Models (OEM #27052-40) Cadmium intake manifold nuts. Sold as a set of 2. Note: Seals not included, must...MSRP: $54.88$38.79 -
V-Twin - Chrome Lower Pushrod Cover fits '36-'39 61" EL Model (OEM #17938-36)
V-Twin Mfg
$71.15V-Twin - Chrome Lower Pushrod Cover fits '36-'39 61" EL Model (OEM #17938-36) Chrome lower pushrod cover. Fitment: EL 1936-1939 61"$71.15 -
Colony - 7705-4 Rocker Box Drain Tube Fitting Kit fits '36-'40 EL, '41-'47 FL Models (OEM #17320-38)
Colony Machine
$28.59Colony - 7705-4 Rocker Box Drain Tube Fitting Kit fits '36-'40 EL, '41-'47 FL Models (OEM #17320-38) Rocker box drain tube fitting kit. Fitment: EL 1936-1940 FL 1941-1947$28.59 -
Colony - 7709-32 Cadmium Head Nut Set fits '42-'50 W Model
Colony Machine
$54.31Colony - 7709-32 Cadmium Head Nut Set fits '42-'50 W Model Head nut set with washers are cadmium finish for side valve models 3/8"-16 thread. Fitment: W 1942-1950$54.31 -
Colony - 7710-18 Cadmium Headbolt Washer fits '37-'47 UL, '29-'52 WL, '29-'73 G Models (OEM #16822-39)
Colony Machine
MSRP: $42.64$41.78Colony - 7710-18 Cadmium Headbolt Washer fits '37-'47 UL, '29-'52 WL, '29-'73 G Models (OEM #16822-39) Cadmium aluminum headbolt washer Fitment: UL 1937-1947 WL 1929-1952 G 1929-1973MSRP: $42.64$41.78 -
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
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.