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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Out of stock
Kb Performance - KB409C.010 - Piston Kit - 3.875" +0.010" - 10.0:1 CR - 103" Twin Cam | 96" Twin Cam Big Bore
KB Performance
$236.95Kb Performance - KB409C.010 - Piston Kit - 3.875" +0.010" - 10.0:1 CR - 103" Twin Cam | 96" Twin Cam Big BoreFeaturesManufactured from high-strength, T-5 heat-treated, 390 hypereutectic aluminum...$236.95 -
Out of stock
Kibblewhite - 20-21032 - Valve Guide -Exhaust - 0.4770" OD - M8
Kibblewhite
$26.89Kibblewhite - 20-21032 - Valve Guide -Exhaust - 0.4770" OD - M8FeaturesPrecision-machined from copper based C63000 nickel-aluminum bronzeCompatible with no-lead fuel and accept any type of valve-stem...$26.89 -
Out of stock
Kibblewhite - 20-21205 - Beehive Spring Kit - 0.550" Lift - M8 | CVO
Kibblewhite
MSRP: $416.95$416.13Kibblewhite - 20-21205 - Beehive Spring Kit - 0.550" Lift - M8 | CVOFeaturesProgressively wound springs using Kobe super-clean, chromium silicon(CrSi) based wire that is heat treated and shot...MSRP: $416.95$416.13 -
Out of stock
Kibblewhite - 20-21000 - Beehive Spring Kit - 0.465" Lift - M8 | CVO
Kibblewhite
$313.38Kibblewhite - 20-21000 - Beehive Spring Kit - 0.465" Lift - M8 | CVOFeaturesProgressively wound springs using Kobe super-clean, chromium silicon(CrSi) based wire that is heat treated and shot...$313.38 -
Out of stock
Kibblewhite - 20-20862M - Valve Guide - 0.5645" OD - Intake - Twin Cam | XL
Kibblewhite
$13.12Kibblewhite - 20-20862M - Valve Guide - 0.5645" OD - Intake - Twin Cam | XLFeaturesCan be easily reamed with a battery-operated or electric drill and finished with a high-quality ball honeManganese...$13.12 -
Out of stock
Kibblewhite - 20-23350 - Engine Valve Kit - 0.465" Lift - M8 '17-'24
Kibblewhite
$508.87Kibblewhite - 20-23350 - Engine Valve Kit - 0.465" Lift - M8 '17-'24 Features Kits include KPMI® or equivalent valve spring kit, a full set of Black Diamond™stainless steel standard size valves...$508.87 -
Out of stock
Kibblewhite - 20-22900 - Valve Kit - 1.805" Intake/1.575" Exhaust - XL1200 '04-'17
Kibblewhite
$205.56Kibblewhite - 20-22900 - Valve Kit - 1.805" Intake/1.575" Exhaust - XL1200 '04-'17FeaturesAll valves are fortified by a special process to a depth of .002” with a surface buildup of .0002”This...$205.56 -
Out of stock
Kibblewhite - 10-SC500 - Cast Iron Valve Seat - Intake - Evolution
Kibblewhite
$12.43Kibblewhite - 10-SC500 - Cast Iron Valve Seat - Intake - EvolutionFeaturesTests have proven that the machinability, wear and thermal conductivity surpasses all standardsCompatible with all fuel...$12.43 -
Out of stock
Kb Performance - RRN-81-4PK - Wrist Pin Lock Ring
KB Performance
$10.95Kb Performance - RRN-81-4PK - Wrist Pin Lock RingFeaturesReplacement piston lock rings for KB Performance Piston KitSpecs$10.95 -
Out of stock
Kb Performance - KB596LCA.STD - Piston Kit - 4.250" Standard - 11.7:1 CR - 128" Big Bore - 114"/117" M8
KB Performance
$446.95Kb Performance - KB596LCA.STD - Piston Kit - 4.250" Standard - 11.7:1 CR - 128" Big Bore - 114"/117" M8FeaturesUpdates stock 107\Valve pockets are designed to accept up to +4.00 mm oversized intake...$446.95 -
Out of stock
Klock Werks - KWS-02-0616-C - Oil Cooler Guard - Chrome - M8 Softail
Klock Werks
$64.95Klock Werks - KWS-02-0616-C - Oil Cooler Guard - Chrome - M8 SoftailFeaturesDresses up your oil cooler area using the same material that matches Klock Werks bagger vent screensAdds some needed "pop"...$64.95 -
Out of stock
Hastings - 2M4985005 - Piston Rings - 3.875" + 0.005" - 95" Big Bore Twin Cam
Hastings
$87.95Hastings - 2M4985005 - Piston Rings - 3.875" + 0.005" - 95" Big Bore Twin CamFeaturesIncludes top compression rings, second compression rings, and oil control ringsTop Compression Rings are Barrel...$87.95 -
Out of stock
Hastings - 2M6198005 - Piston Rings - 3.000" +0.005 - 883 cc XL Evolution
Hastings
$55.95Hastings - 2M6198005 - Piston Rings - 3.000" +0.005 - 883 cc XL EvolutionFeaturesIncludes top compression rings, second compression rings, and oil control ringsTop Compression Rings are Barrel...$55.95 -
Out of stock
Fram - PH6022 - Oil Filter - Black - Twin Cam/M8
Fram
$19.09Fram - PH6022 - Oil Filter - Black - Twin Cam/M8FeaturesHigh-quality filters are made to strict specifications to provide superior performanceInclude all necessary o-rings or gasketsMicron rating of...$19.09 -
Out of stock
Fram - PH6017A - Oil Filter
Fram
$20.34Fram - PH6017A - Oil FilterFeaturesIncludes all necessary O-rings and gasketsMicron rating of 10 traps microscopic dirt particles without restricting air flowHigh-quality filter made to strict...$20.34 -
Out of stock
K & N - KN-173C - Oil Filter - Chrome
K&N
$20.99K & N - KN-173C - Oil Filter - ChromeFeaturesK&N delivers a premium oil filter which is built with a synthetic media specifically designed to withstand the high concentrates of synthetic racing oilsA...$20.99 -
Out of stock
Joker Machine - 921016FC - Inspection Cover - Flame
Joker Machine
$109.95Joker Machine - 921016FC - Inspection Cover - FlameFeaturesChrome-plated with machined silver accentsCNC machined from 6061-T6 billet aluminumIncludes mounting hardwareMade in the USASpecs$109.95 -
Out of stock
Jims - 1356 - Valve Spring Kit - Evolution - Big Twin
Jims
$112.95Jims - 1356 - Valve Spring Kit - Evolution - Big TwinFeaturesIncorporate an interference double-spring design with damper to control harmonicsEngineered for maximum performance in severe applications...$112.95 -
Out of stock
Jims - 1350K - Valve Spring Kit - Evolution - Big Twin
Jims
$228.91Jims - 1350K - Valve Spring Kit - Evolution - Big TwinFeaturesIncorporate an interference double-spring design with a damper to control harmonicsEngineered for maximum performance in severe...$228.91 -
Out of stock
Jims - 24022-90 - Gear-Side Pinion Shaft Nut - Fits 1990-1992 Big Twin; repl. OEM #24022-90
Jims
$33.95Jims - 24022-90 - Gear-Side Pinion Shaft Nut Features 5/8"-24 left-hand threads Specs Type$33.95 -
Out of stock
Jims - 24016-80 - Pinion Shaft Nut - 3/4-20 Thread - Fits L1981-1999 Big Twin; repl. OEM #24016-80 (Twin Cam); repl. OEM #24003-55)
Jims
MSRP: $35.95$35.70Jims - 24016-80 - Pinion Shaft Nut - 3/4-20 Thread Features Heavy-duty nut fits flywheel-side of pinion shaft 3/4"-20 thread Made in the U.S.A. Check rod clearance. SpecsMSRP: $35.95$35.70 -
Out of stock
Jims - 1754 - Flow Pro 1 Billet Oil Pump Top Line - Polished
Jims
$808.65Jims - 1754 - Flow Pro 1 Billet Oil Pump Top Line - PolishedFeaturesCNC-machined feed and return gears increase pump flow and return volumePumps include cover, gears, drive shaft, seals, gaskets,...$808.65 -
Out of stock
Jims - 26328-74 - Feed Drive Oil Pump Gear - Big Twin
Jims
$58.95Jims - 26328-74 - Feed Drive Oil Pump Gear - Big TwinFeaturesOil Pump Component for Big Twin modelsSpecsType$58.95 -
Out of stock
Jims - 26326-62A - Feed Idler Oil Pump Gear - Big Twin
Jims
$58.95Jims - 26326-62A - Feed Idler Oil Pump Gear - Big TwinFeaturesOil Pump Component for Big Twin modelsSpecsType$58.95 -
Out of stock
Jims - 26317-68A - Oil Pump Idler Gear - Big Twin
Jims
$58.95Jims - 26317-68A - Oil Pump Idler Gear - Big TwinFeaturesOil Pump Component for Big Twin modelsSpecsType$58.95 -
Out of stock
Jims - 26315-68A - Oil Pump Drive Gear - Big Twin
Jims
MSRP: $58.95$58.50Jims - 26315-68A - Oil Pump Drive Gear - Big TwinFeaturesOil Pump Component for Big Twin modelsSpecsRiding Style<MSRP: $58.95$58.50 -
Out of stock
Jims - 24599-58B - Crankcase Bushing - Big Twin
Jims
$135.30Jims - 24599-58B - Crankcase Bushing - Big Twin Features 360 oiling Made in the U.S.A. Specs$135.30 -
Out of stock
Jims - 1046-36A - Rod Race Set - Big Twin
Jims
$121.75Jims - 1046-36A - Rod Race Set - Big TwinFeaturesMade from 52100 aerospace-quality Timken® bearing stockMade in the U.S.A.Replacement Part for OEM Number(s): 2434536A,2435636ASpecs$121.75 -
Out of stock
Jims - 1043 - Chrome Lifter Covers - Twin Cam
Jims
$332.95Jims - 1043 - Chrome Lifter Covers - Twin CamFeaturesCNC-machined from 6061 T-6 billet aluminumGaskets and screws includedMade in the U.S.A.Specs$332.95 -
Out of stock
Jims - 1803 - Hydrosolid Tappet - XL
Jims
$170.40Jims - 1803 - Hydrosolid Tappet - XLFeaturesPerform like a hydraulic tappet up to 5500 rpm, then turn into a solid tappetWhen they turn into solid tappets, it adds approximately three to six more...$170.40 -
Out of stock
Hotop - PBGR-20 - Breather Gear Air Ramp
Hotop
$44.95Hotop - PBGR-20 - Breather Gear Air Ramp Features Increases cfm flow by approximately 80% Helps remove more air and oil from the crankcase Made in the U.S.A. Requires the removal of the screen...$44.95 -
Out of stock
Jims - 18526-PG - Tappet - Standard - XL
Jims
$158.95Jims - 18526-PG - Tappet - Standard - XLFeaturesMicro-finish bore allows a running fit of .0002"Big Axle™ rollers are designed around three working partsThe outer wheel/roller has a 27% greater wall...$158.95 -
Out of stock
Jims - 24006-87 - Pinion Shaft - Big Twin
Jims
$156.95Jims - 24006-87 - Pinion Shaft - Big TwinFeaturesAll ground diameters are concentric to within .0003" to simplify flywheel trueing and rebuildingConstructed of only domestic steelMade in the U.S.A...$156.95 -
Out of stock
Gardner-Westcott - A-61-100 - Head Bolts - Chrome - Fits 1986-1991 XL; 1986-1991 Big Twin
Gardner-Westcott
$128.95Gardner-Westcott - A-61-100 - Head Bolts - ChromeFeaturesInclude four long and four short headboltsMade in the U.S.A.Specs$128.95 -
Out of stock
Gardner-Westcott - A-61-110 - Head Bolt Kit - Chrome - Fits 1999-2017 Twin Cam and 1992-2022 XL (except RH Sportster); 1993-1999 Evolution Big Twin (repl. OEM #s 16480-92 and 16478-85A)
Gardner-Westcott
$128.95Gardner-Westcott - A-61-110 - Head Bolt Kit - ChromeFeaturesInclude four long and four short headboltsMade in the U.S.A.Specs$128.95 -
Out of stock
Gardner-Westcott - SP-10-17-08 - Bolt Kit - Primary Cover Only - Socket-Head
Gardner-Westcott
$54.95Gardner-Westcott - SP-10-17-08 - Bolt Kit - Primary Cover Only - Socket-Head Features Primary cover only Made in the U.S.A. Specs$54.95 -
Out of stock
Gardner-Westcott - SP-10-18-08 - Bolt Kit - Primary Cover Only - Socket-Head
Gardner-Westcott
$65.95Gardner-Westcott - SP-10-18-08 - Bolt Kit - Primary Cover Only - Socket-Head Features Primary cover only Made in the U.S.A. Specs$65.95 -
Out of stock
Gardner-Westcott - P-80-84 - Bolt Kit - Motor Set - Socket-Head
Gardner-Westcott
$259.95Gardner-Westcott - P-80-84 - Bolt Kit - Motor Set - Socket-HeadFeaturesIncludes all side covers, lifter base timing plug, inner primary mount, tip, front and rear motor mountsMade in the U.S.A.Specs$259.95 -
Out of stock
Gardner-Westcott - P-80-87 - Bolt Kit - Motor Set - Socket-Head
Gardner-Westcott
$309.95Gardner-Westcott - P-80-87 - Bolt Kit - Motor Set - Socket-HeadFeaturesIncludes all side covers, lifter base timing plug, inner primary mount, tip, front and rear motor mountsMade in the U.S.A.Specs$309.95 -
Out of stock
Gardner-Westcott - SP-80-87 - Bolt Kit - Motor Set - Socket-Head
Gardner-Westcott
$271.95Gardner-Westcott - SP-80-87 - Bolt Kit - Motor Set - Socket-HeadFeaturesIncludes all side covers, lifter base timing plug, inner primary mount, tip, front and rear motor mountsMade in the U.S.A.Specs$271.95
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.