Engine
7737 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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Hastings - 6164 - Piston Rings - 3.498" Standard - Evolution Big Twin
Hastings
$37.85Hastings - 6164 - Piston Rings - 3.498" Standard - Evolution Big TwinFeaturesIncludes top compression rings, second compression rings, and oil control ringsTop Compression Rings are Barrel FaceCast...$37.85 -
Feuling Parts - 7320 - Camchest Kit - OE+ Hydraulic Cam Chain Conversion - 525 Series - Twin Cam
Feuling
$1,839.95Feuling Parts - 7320 - Camchest Kit - OE+ Hydraulic Cam Chain Conversion - 525 Series - Twin CamFeaturesKit includes Feuling® OE+® oil pump, OE+® camplate, Reaper® series conversion camshafts, HP+®...$1,839.95 -
Feuling Parts - 1076 - Valve Guide Seals - For 7.00 mm Valve Stem - 88"/96"/103" Twin Cam | XL
Feuling
$15.95Feuling Parts - 1076 - Valve Guide Seals - For 7.00 mm Valve Stem - 88"/96"/103" Twin Cam | XLFeaturesHigh-quality Viton® valve guide sealsDesigned to handle high engine temperatures with a built-in...$15.95 -
Ciro - 70007 - Caps - Rocker Box/Bolt - Peaked - Chrome
Ciro
$39.99Ciro - 70007 - Caps - Rocker Box/Bolt - Peaked - ChromeFeaturesPrecision fit and simple press-on installationCover up old, dull or rusty boltsMade from stamped steelFor Twin Cam engines.Specs$39.99 -
S&S Cycle - Stock Heads Intake Manifold O-Ring fits '84-'16 Big Twin, '86-'16 Sportster Models (OEM #26992-99, 26995-86A)
S&S Cycle
$10.95S&S Cycle - Stock Heads Intake Manifold O-Ring fits '84-'16 Big Twin, '86-'16 Sportster Models (OEM #26992-99, 26995-86A) Features: Sold Each Made from the highest-quality materials available$10.95 -
S&S Cycle - Billet Oil Pump fits '70-'91 Big Twin Models
S&S Cycle
MSRP: $499.95$445.95S&S Cycle - Billet Oil Pump fits '70-'91 Big Twin Models Features: Kit includes an oil pump with cover, mounting bolts, supply and return gears, drive shaft with keys and snap rings, check ball...MSRP: $499.95$445.95 -
S&S Cycle - Replacement Billet Oil Pump Gasket Kit
S&S Cycle
$17.95S&S Cycle - Replacement Billet Oil Pump Gasket Kit Features: Made in the U.S.A. Fitment$17.95 -
Colony - 8931-16 Rocker Box Cover Allen Screw fits '84-'98 FXST/FLT, '86-'UP XL, '91-'98 FXD Models - Chrome
Colony Machine
$26.48Colony - 8931-16 Rocker Box Cover Allen Screw fits '84-'98 FXST/FLT, '86-'UP XL, '91-'98 FXD Models - Chrome Chrome rocker box cover allen screw kit Fitment: FXST 1984-1998 FLT 1984-1998 XL...$26.48 -
Colony - 9634-4 Chrome Oil Pump Check and Relief Valve Plug fits '84-'98 FXST, '82-'94 FXR, '91-'98 FXD Models
Colony Machine
$29.45Colony - 9634-4 Chrome Oil Pump Check and Relief Valve Plug fits '84-'98 FXST, '82-'94 FXR, '91-'98 FXD Models Oil pump check and relief valve plug with a chrome finish. Fitment: FLT...$29.45 -
James Gaskets - James Rubber Rocker Box Gasket Kit W/ RCM Base Gaskets fits '07-'22 Sportster Models (Exc. '21 Sportster S/RH1250S)
James Gaskets
$91.95James Gaskets - James Rubber Rocker Box Gasket Kit W/ RCM Base Gaskets fits '07-'21 Sportster Models (Exc. '21 Sportster S/RH1250S) This kit comes complete with all of the necessary inner, upper and...$91.95 -
Thrashin Supply Co. - Harley Points Cover, Dished
Thrashin Supply
$64.95Thrashin Supply Co. Dished Points Cover for Harley Twin Cam Models The Thrashin Supply Co. Dished Points Cover is made of tough billet aluminum. Not only does this look super clean and sleek but...$64.95 -
Drag Specialties - P-09330076 - Motor Mount Stabilizer for Harley Model
Drag Specialties
$86.87 - $94.29Drag Specialties Motor Mount Stabilizer for Harley Model Motor mount stabilizer for Harley Touring, FXR, and Dyna Glide models. Make sure you check the fitment table below to ensure it will fit your...$86.87 - $94.29 -
S&S - Harley Oil Filter fits '99-Up Harley Twin Cam, '17-Up M8 - Black or Chrome
S&S Cycle
$20.95 - $23.95S&S - Harley Oil Filter (Chrome or Black) - fits '99-Up Harley Twin Cam, '17-Up M8 Features Sturdy steel canister houses the finest filtering media and internal components available Canister is...$20.95 - $23.95 -
S&S Harley Oil Filter fits '84-'99 Big Twin & '86-Up XL Sportsters - Black or Chrome
S&S Cycle
$20.95 - $23.95S&S Harley Oil Filter fits '84-'99 Big Twin & '86-Up XL Sportsters - Black or Chrome This S&S Oil Filter fits '84-'99 Big Twin & '86-Up XL Sportsters and is available in Black or...$20.95 - $23.95 -
La Choppers - Torque Cones
LA Choppers
$47.99 - $74.99LA Choppers Torque Cones LA Choppers Torque Cones available as normal torque cones, or the new Vortex design which increases back pressure to improve torque and horsepower...$47.99 - $74.99 -
V-Twin - Black Nose Cone Cam Cover fits '73-'93 Big Twin Models OEM #25268-84A
V-Twin Mfg
$215.23V-Twin - Black Nose Cone Cam Cover fits '73-'93 Big Twin Models OEM #25268-84A V-Twin's Nose Cone Cam Cover is designed to fit Big Twin Models. The bushings are installed and a seal is included...$215.23 -
James Gaskets - Pushrod Seal Kit W/ Tappet Cover Gaskets and O-Ring fits '99-'17 Twin Cam Models
James Gaskets
$19.95James Gaskets - Pushrod Seal Kit W/ Tappet Cover Gaskets and O-Ring fits '99-'17 Twin Cam Models This kit provides a simple and effective method to properly sell the right amount of seals or O-rings...$19.95 -
HardDrive - 80" Shovelhead Cylinder - (Front or Rear)
HardDrive
$227.66The HardDrive 80" Shovelhead Cylinder: Black powder-coated cast iron cylinders All cylinders must be finish honed and matched to pistons Sold each$227.66 -
On Sale
Colony - Cam Cover Allen Screws fits Harley FL, FX (see desc.) - Chrome
Colony Machine
MSRP: $19.26Now: $16.99Was: $19.06Colony Cam cover allen screws. Fits:FL 1970-1984FX 1971-1984FXST 1984-1992FLT 1984-1992FXR 1984-1992FLST 1986-1992 UOM: 7 - SETMSRP: $19.26Now: $16.99Was: $19.06 -
Colony - Ignition Cover Timer Stud Kit fits '80-'99 Big Twin, '80-'85 Sportster Models (OEM #32601-80, 32606-82)
Colony Machine
$13.95Colony - Ignition Cover Timer Stud Kit fits '80-'99 Big Twin, '80-'85 Sportster Models (OEM #32601-80, 32606-82) Features: Reproduction of original ignition timer cover studs Made in the U.S.A...$13.95 -
S&S Cycle - Quickee Pushrod Kit w/ Black Covers for Harley Twin Cam 1999-2017
S&S Cycle
$336.95S&S Quickee Pushrod Kit w/ Black Covers for Harley Twin Cam 1999-2017 Kits include four S&S Quickee pushrods, four pushrod covers, O-rings Pushrods are manufactured from chromoly steel for...$336.95 -
Feuling - Cylinder Stud Kit - fits '99-'16 Twin Cam , '85-'99 Evo Big Twin
$130.95 - $159.95The Feuling Cylinder Stud Kit: The stongest studs available Feuling studs are installed to a torque spec can be reused and carry a lifetime warranty Heat-treated 8740 chrome moly studs Stock...$130.95 - $159.95 -
PC Racing - Flo® "Spin-On" Oil Filter fits '17-'23 M-Eight, '99-'17 Twin Cam, '86-'22 XL Models (Except RH Sportsters); '09-'12 XR1200
PC Racing
$159.95PC Racing - Flo® "Spin-On" Oil Filter fits '17-'23 M-Eight, '99-'17 Twin Cam, '86-'22 XL Models (Except RH Sportsters); '09-'12 XR1200 Features: Flows 7 times more than paper or synthetic filters...$159.95 -
Feuling - Engine Bolt Fastener Kit fits '91-'03 Sportster Models
Feuling
$219.95Feuling - Engine Bolt Fastener Kit fits '91-'03 Sportster Models This is a complete external fastener kit specifically designed for certain Harley-Davidson Sportster models (See 'Fitment' tab)...$219.95 -
S&S Cycle - Lower Rocker Box Gasket Kit fits '99-'17 Twin Cam OEM Rocker Boxes Used on S&S Heads
S&S Cycle
$40.95S&S Cycle - Lower Rocker Box Gasket Kit fits '99-'17 Twin Cam OEM Rocker Boxes Used on S&S Heads S&S's Lower Rocker Box Gasket Kit must be used when installing OEM stock rocker boxes on S&S heads...$40.95 -
Feuling - 12-Point Engine Fastener Cam/Pinion Shaft Bolt Kit fits '99-'17 Twin Cam Models
Feuling
$39.95Feuling - 12-Point Engine Fastener Cam/Pinion Shaft Bolt Kit fits '99-'17 Twin Cam Models This kit comes with bolts, hardened washers and a camshaft retaining ring (black oxide). The tensile...$39.95 -
S&S Cycle - Master Rebuild Kit For S&S Oil Pump - fits '78-'91 Harley Big Twin
S&S Cycle
$31.95S&S Cycle - Master Rebuild Kit For S&S Oil Pump - fits '78-'91 Harley Big Twin Features: Master rebuild kit for S&S oil pump. Made in the U$31.95 -
Custom Cycle Engineering - Finned Rocker Covers for Panhead 1948-1965
Custom Cycle Engineering
$457.95 - $584.95Custom Cycle Engineering - Finned Rocker Covers for Panhead 1948-1965 Part of the Randy Smith collection by Custom Cycles Engineering, these finned covers are for Harley Panhead engines 1948-1965...$457.95 - $584.95 -
V-Twin - 40-0850 - Pura Flow Universal Oil Filter Kit
V-Twin Mfg
$68.64V-Twin - 40-0850 - Pura Flow Universal Oil Filter KitDescriptionOur Pura-Flow universal oil filter kit includes bracket, oil filter and hose,*NOTE: Additional stock spin on oil filters available...$68.64 -
V-Twin - 40-0127 - Rocker Box Oil Line Set
Wyatt Gatling
$34.18V-Twin - 40-0127 - Rocker Box Oil Line SetDescriptionZinc oil line set for Shovelhead rocker boxes includes fittings and seals. Fits:FLT 1979-1983FX 1971-1984FXR 1982-1983FL 1966-1984Additional...$34.18 -
V-Twin - 12-1499 - Reverse Circuit Breaker Gear Kit
Motorshop
$326.44V-Twin - 12-1499 - Reverse Circuit Breaker Gear KitDescriptionReverse rotation circuit breaker gear kit. Fits:FL 1941-1969EL 1936-1952Additional Information$326.44 -
V-Twin - 11-0871 - Piston Wrist Pin and Lock Kit
Motorshop
$24.83V-Twin - 11-0871 - Piston Wrist Pin and Lock KitDescriptionWrist pin and lock kit includes two wrist pins and four lock rings. Fits:FXST 1984-1998FLT 1984-1998FXD 1991-1998FXR 1984-1994FLST...$24.83 -
Trask - TM-017-RK - Assault Cam Cover Repair Kit - Twin Cam
Trask Performance
$39.95Trask - TM-017-RK - Assault Cam Cover Repair Kit - Twin CamFeaturesIncludes everything to repair Trask Assault Series Cam CoversMade in the USACam covers (sold separately).Specs$39.95 -
Eastern Motorcycle Parts - A-8977 - Bearing
Eastern Motorcycle Parts
$41.95Eastern Motorcycle Parts - A-8977 - BearingFeaturesReplacement mainshaft bearing for 5-speed Big TwinsReplacement Part for OEM Number(s): 8977Specs$41.95 -
Cometic - C9588 - Rocker Box Gasket Kit - Twin Cam
Cometic
$46.52Cometic - C9588 - Rocker Box Gasket Kit - Twin CamFeaturesPremium materials used for specific applications to provide a long, service free lifeKits include all gaskets, seals, O-rings and quality...$46.52 -
Cometic - C10127 - Cylinder Base Gasket O-Ring Kit - 110" - Twin Cam
Cometic
$10.95Cometic - C10127 - Cylinder Base Gasket O-Ring Kit - 110" - Twin CamFeaturesHigh-quality products for long-term reliabilityManufactured from premium fuel-resistant materials that will not creep,...$10.95 -
Andrews - 291127 - Camshaft - EV27 - Evolution Big Twin
Andrews
$261.43Andrews - 291127 - Camshaft - EV27 - Evolution Big TwinFeaturesCapable of 6000+ rpm with stock springs and no valve floatBolt-in street cam with fast open and close rampsUses stock springs; works...$261.43 -
V-Twin - Intake Manifold Seal Kit fits '90-'17 FLST/FXST, '88-'06 Sportster Models
V-Twin Mfg
$27.12V-Twin - Intake Manifold Seal Kit fits '90-'17 FLST/FXST, '88-'06 Sportster Models Manifold seal kit is to reseal late model manifolds with CV carburetor Fitment: FLST 1990-2017 FXD 1991-2017 FXST...$27.12 -
Wyatt Gatling - Shovelhead Chrome Rocker Box Line Kit fits '79-'83 FLT, '66-'84 FL, '82-'83 FXR Models
Wyatt Gatling
$67.58Wyatt Gatling - Shovelhead Chrome Rocker Box Line Kit fits '79-'83 FLT, '66-'84 FL, '82-'83 FXR Models Natural brass rocker box line kit includes "T" to oil the heads with 6mm brass tube and brass...$67.58 -
Colony - Motor Mount Hardware fits '57-'85 Sportster Models (OEM #16218-52, 16230-52, 16237-57) - Chrome
Colony Machine
$46.95Colony - Motor Mount Hardware fits '57-'85 Sportster Models (OEM #16218-52, 16230-52) - Chrome Features: Includes two 3/8"-24 x 613/16" bolts, one 3/8"-24 x 57/16" bolt, one 3/8"-24 x 53/16"...$46.95
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.