Engine
8284 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
S&S - Tappet Cuffs, Black - Fits 17-18 Touring, 18-Up Softail Models with M8 Powerplant
S&S Cycle
MSRP: $84.95$79.95S&S Tappet Cuffs for Harley-Davidson 2017-2018 Touring Models with M8 Powerplant, 2018-Up Softail with M8 Powerplant Features: Hard anodized black coating Billet aluminum construction Stronger...MSRP: $84.95$79.95 -
Out of stock
Cometic - Breather Assembly Gasket Kit fits '03-'17 Twin Cam Models (Sold Each)
Cometic
$20.95Cometic - Breather Assembly Gasket Kit fits '03-'17 Twin Cam Models (Sold Each) This kit comes with all necessary gaskets/seals for a full breather rebuild assembly. Please Note: Breather assembly...$20.95 -
Out of stock
Comp Cams - Velva Ride Motor Mount Stabilizers - Fits Harley FLT and Dyna Models (see fitment)
Comp Cams
$162.95 - $330.95Comp Cams Velva Ride Motor Mount Stabilizers Fits Harley Davidson FLT and Dyna Models Features: Body contains a plunger encased in a specially formulated urethane to absorb vibration Sold each...$162.95 - $330.95 -
Out of stock
EMD - Rocker Covers - fits '17-Up M8
EMD
$499.95 - $539.95EMD - Rocker Covers - fits '17-Up M8 Dress up your M8 with a Rocker Cover by EMD. Features: Available in Classic Ribbed or Shovel design Available in Black or Raw finish Gaskets sold...$499.95 - $539.95 -
Out of stock
EMD - Knuckle Style Cam Cover - Fits '91-Up XL Models
EMD
$178.95 - $195.95EMD - Knuckle Style Cam Cover - Fits '91-Up XL Models Features Fits over OEM Cam Cover Held in place with 3 supplied Allen bolts and spacers Can be notched at upper front to make room for your...$178.95 - $195.95 -
Out of stock
Performance Machine - Black Ops Race Series Rocker Box Cover fits '17-'23 Harley M8 Models
Performance Machine
$714.95Performance Machine - Black Ops Race Series Rocker Box Cover fits '17-'23 Harley M8 Models This rocker box cover dissipates heat more efficiently compared to stock covers. Features CNC machined...$714.95 -
Out of stock
Sawicki Speed Shop - Billet End Cap Replacement Kit (Universal Fit)
Sawicki Exhaust
$150.00Sawicki Speed Shop - Billet End Cap Replacement Kit (Universal Fit) Sold each. Fitment Fits all pipes.$150.00 -
Out of stock
Colony Machine - Lower Rocker Box Mounting Kit fits '86-'20 XL Models
Colony Machine
$43.95Colony Machine - Lower Rocker Box Mounting Kit fits '86-'20 XL Models The Colony Machine Lower Rocker Box Mounting Kit is 100% U.S.A manufactured of the highest quality materials. Colony is among...$43.95 -
Out of stock
S&S Cycle - Quickee Pushrod Kit with Gloss Black Covers fits '17-Up M8 Models
S&S Cycle
$334.95S&S Cycle - Quickee Pushrod Kit with Gloss Black Covers fits '17-Up M8 Models The S&S Cycle Quickee Pushrod Kit with Gloss Black Covers is the perfect upgrade for '17-Up M8 Models. The kit includes...$334.95 -
Out of stock
Feuling - 543 Series HP+® Chain Drive Camchest Kit fits '07-'17 Twin Cam & '06 Dyna Glide Models
Feuling
$1,649.95Feuling - 543 Series HP+® Chain Drive Camchest Kit fits '07-'17 Twin Cam & '06 Dyna Glide Models Features: All necessary components from top-to-bottom of the camchest Provide maximum...$1,649.95 -
Out of stock
Paughco - 1-3/4" Mounting Clamp
Paughco
$37.95Paughco 1-3/4" Mounting Clamp Mounting clamp required to install 1800-1867 (Paughco 1-3/4" Drag Pipes for FL Models, 34" pipes).$37.95 -
Out of stock
V-Twin - 11-1685 - OE Rear Rocker Box Breather Valve
OE
MSRP: $37.91$37.15V-Twin - 11-1685 - OE Rear Rocker Box Breather ValveDescriptionOE rear breather valve for the rocker box. Fits:XL 2007-UPAdditional InformationMSRP: $37.91$37.15 -
Out of stock
Drag Specialties - DS243515 - Front ISO-Mount™ Motor Mount - Rubber
Drag Specialties
$28.57Drag Specialties - DS243515 - Front ISO-Mount™ Motor Mount - RubberFeaturesUrethane motor mount specially designed to out-last and out-dampen the OEM partSold individuallyReplacement Part for OEM...$28.57 -
Out of stock
Alloy Art - CRA-1 - Compression Release Adapter - 14 mm x 3/4"
Alloy Art
$20.95Alloy Art - CRA-1 - Compression Release Adapter - 14 mm x 3/4"FeaturesDesigned to be used in twin plug headsAccept .650”/10mm x 1.0 compression release valvesSold eachMade in the U.S.A.Specs$20.95 -
Out of stock
Jims - 24600-58B - Crankcase Bushing
Jims
$160.10Jims - 24600-58B - Crankcase Bushing Features 360 oiling Made in the U.S.A. Replacement Part for OEM Number(s): 2460058,2460058A,2460058B Specs$160.10 -
Out of stock
V-Twin - Black Top Rocker Box Cover and D-Ring Kit fits '86-'03 Sportster Model
V-Twin Mfg
$292.44V-Twin - Black Top Rocker Box Cover and D-Ring Kit fits '86-'03 Sportster Model Black top rocker box cover set includes d-ring kit. Fitment: XL 1986-2003$292.44 -
Out of stock
Drag Specialties - High-Performance Twin Cam Oil Pump Fits '07-'17 Twin Cam & '06 Dyna Models
Drag Specialties
$197.11Drag Specialties - High-Performance Twin Cam Oil Pump Fits '07-'17 Twin Cam & '06 Dyna Models This pump helps to decrease oil carryover during high rpm operation; the higher volume helps to lower...$197.11 -
Out of stock
Drag Specialties - Oil Pump Assembly Fits '91-'22 XL Models (Exc. '21-'22 Sportster S/RH 1250S, '22 Nightster/RH975 Models)
Drag Specialties
$312.65Drag Specialties - Oil Pump Assembly Fits '91-'22 XL Models (Exc. '21-'22 Sportster S/RH 1250S, '22 Nightster/RH975 Models) This is a high-quality replacement cast aluminum pump body with steel...$312.65 -
Out of stock
S&S Cycle - Natural 80" Bore Cylinder & Piston Kit fits '84-'00 Evolution Big Twin Models W/ Stock or S&S Heads
S&S Cycle
$1,155.95S&S Cycle - Natural 80" Bore Cylinder & Piston Kit fits '84-'00 Evolution Big Twin Models W/ Stock or S&S Heads S&S Cycle's 80" Bore Cylinder & Piston Kits feature S&S 3½" bore cylinders and forged...$1,155.95 -
Out of stock
Jagg - Vertical Frame Mount 6-Row Oil Cooler System
Jagg Oil Coolers
$399.95 - $449.95Jagg - Vertical Frame Mount 6-Row Oil Cooler System Jagg's Vertical Frame Mount 6-Row Oil Cooler System is a must-have performance part for Harley owners. This cooler mounts to the left frame...$399.95 - $449.95 -
Out of stock
S&S Cycle - Chain-Drive Camchest Kits W/ 509C Standard Cams for '99-'06 Twin Cam (Except '06 Dyna)
S&S Cycle
MSRP: $2,060.95$1,924.95S&S Cycle - Chain-Drive Camchest Kits W/ 509C Standard Cams for '99-'06 Twin Cam (Except '06 Dyna) Features Upgrade to S&S bolt-in performance chain-drive or gear-drive camshafts Improves engine...MSRP: $2,060.95$1,924.95 -
Out of stock
Drag Specialties - Front Motor Mount Plate - Harley Touring Models
Drag Specialties
$48.71Drag Specialties Front Motor Mount Plate This motor mount by Drag Specialties is for 1999-2006 FLT 5-speed models, and is made to replace OEM part number 47159-79T. Features: Made of heavy-duty...$48.71 -
Out of stock
HardDrive - 80" Evo Cylinder - fits Front and Rear
HardDrive
$289.76HardDrive 80" Evo Cylinder Features: Aluminum cylinders with cast iron sleeves All cylinders must be finish honed and matched to pistons Sold each$289.76 -
Out of stock
HardDrive - 74" Panhead Cylinder - (Front or Rear)
HardDrive
$185.95The HardDrive 74" Panhead Cylinder: Black powder-coated cast iron cylinders All cylinders must be finish honed and matched to pistons Sold each$185.95 -
Out of stock
Drag Specialties - DS194054 - Lifter Blocks - Chrome - Evolution/Big Twin
Drag Specialties
MSRP: $242.00$234.95Drag Specialties - DS194054 - Lifter Blocks - Chrome - Evolution/Big TwinFeaturesEach pair is precision-machined and comes with a set of chrome-plated socket-head screwsMade from cast aluminum,...MSRP: $242.00$234.95 -
Out of stock
Trask - TM-7600-BK - Tornado Turbo Performance Kit - Black with Black Exhaust
Trask Performance
$5,999.95Trask - TM-7600-BK - Tornado Turbo Performance Kit - Black with Black Exhaust Features Bolt on 40%-50% more power for stock 107\ Trask compressor and turbine housing with Garrett...$5,999.95 -
Out of stock
Motorshop - Chrome Tappet Block Lifter Kit fits '53-'84 FL Model
Motorshop
$232.87Motorshop - Chrome Tappet Block Lifter Kit fits '53-'84 FL Model Kit includes chrome tappet block set and standard solid lifter set to be used with stock solid pushrods on Big Twin, Panhead and...$232.87 -
Out of stock
V-Twin - 107" Big Bore Twin Cam Cylinder Kit fits '99-'06 FLST/FXST/FLT/FXD Model
V-Twin Mfg
$786.03V-Twin - 107" Big Bore Twin Cam Cylinder Kit fits '99-'06 FLST/FXST/FLT/FXD Model 107" Twin Cam big bore cylinder kit includes 10.5:1 piston kit and steel cylinders with black finish. Requires case...$786.03 -
Out of stock
Colony - 2709-24 Knurled Motor Mount Bolt Kit fits '09-'16 FLT Model (OEM #4313, 4688)
Colony Machine
$31.95Colony - 2709-24 Knurled Motor Mount Bolt Kit fits '09-'16 FLT Model (OEM #4313, 4688) Features: Individual bolt and nut sets for specific applications Bolt kits include allen screws, nuts and...$31.95 -
Out of stock
Drag Specialties - High-Performance Twin Cam Oil Pump Fits All '99-'06 Twin Cam Models (Exc. '06 Dyna Models)
Drag Specialties
$197.11Drag Specialties - High-Performance Twin Cam Oil Pump Fits All '99-'06 Twin Cam Models (Exc. '06 Dyna Models) This pump helps to decrease oil carryover during high rpm operation; the higher volume...$197.11 -
Out of stock
Feuling - ARP 12-Point Evolution External Fastener Bolt Kit fits '85-'99 Big Twin Models
Feuling
$249.95Feuling - ARP 12-Point Evolution External Fastener Bolt Kit fits '85-'99 Big Twin Models This kit features quality, 12-point heat-treated 8740 chrome moly-steel bolts with a black oxide finish...$249.95 -
Out of stock
S&S Cycle - Wrinkle Black 80" Bore Cylinder & Piston Kit fits '84-'00 Evolution Big Twin Models W/ Stock or S&S Heads
S&S Cycle
$1,231.95S&S Cycle - Wrinkle Black 80" Bore Cylinder & Piston Kit fits '84-'00 Evolution Big Twin Models W/ Stock or S&S Heads S&S Cycle's 80" Bore Cylinder & Piston Kits feature S&S 3½" bore cylinders and...$1,231.95 -
Out of stock
S&S Cycle - TC3 Oil Pump & Cam Support Plate Kit - fits '99-'06 Twin Cam (Exc. '06 Dyna)
S&S Cycle
$836.95S&S Cycle - TC3 Oil Pump & Cam Support Plate Kit - fits '99-'06 Twin Cam (Exc. '06 Dyna) Features: Precision CNC machined forged aluminum Incre$836.95 -
Out of stock
Jagg - Vertical Front Mount 10-Row Wideline Oil Cooler System
Jagg Oil Coolers
$449.95 - $574.95Jagg - Vertical Front Mount 10-Row Wideline Oil Cooler System This 10-row, high-performing two-pass oil cooler is built to fit all bike with vertical frame tubes. It is specifically designed to...$449.95 - $574.95 -
Out of stock
Jagg - Low Mount 10-Row Horizontal Oil Cooler fits '91-'16 Dyna Models
Jagg Oil Coolers
$449.95 - $574.95Jagg - Low Mount 10-Row Horizontal Oil Cooler fits '91-'16 Dyna Models Jagg's 10-Row Low Mount Oil Cooler System was designed to help Twin Cam engines deliver optimum heat exchange and flow...$449.95 - $574.95 -
Out of stock10% OFF
Arlen Ness - 10-Gauge Pushrod Tube Kits for '17-'25 M8 Softail Engines
Arlen Ness
$103.48 - $229.95Arlen Ness - 10-Gauge Pushrod Tube Kits for '17-'25 M8 Softail Engines The Arlen Ness 10-Gauge Pushrod Tube Kits are built from 6061-T6 billet aluminum and are sold in a set of four. Available in...$103.48 - $229.95 -
Out of stock
Feuling - 543 HP+® Chain Drive Conversion Camchest Kits for '99-'06 Twin Cam (Except '06 Dyna Glide)
Feuling
$1,939.95Feuling - 543 HP+® Chain Drive Conversion Camchest Kits for '99-'06 Twin Cam (Except '06 Dyna Glide) NOTE: Conversion camshafts for '99-'06 Twin Cam engines use the '99-'06 inner cam journals with...$1,939.95 -
Out of stock
EMD - XR Trackster Rocker Box Covers -Black fits '04-'17 XL Models
EMD
$582.95The XR Trackster Rocker Box Covers Make that Evolution Sportster look like a XR750 flat track racer Manufactured in die cast aluminum with CNC milled gasket surface Mounts in place of stock...$582.95 -
Out of stock
EMD - XR Trackster Rocker Box Covers -Black fits '86-'03 XL Models
EMD
$582.99The XR Trackster Rocker Box Covers Make that Evolution Sportster look like a XR750 flat track racer Manufactured in die cast aluminum with CNC milled gasket surface Mounts in place of stock rocker...$582.99 -
Out of stock
EMD - Sherman Rocker Box Covers -Raw fits '99-'17 Twin Cam Models
EMD
$328.95The EMD Sherman Rocker Box Covers: Cool, rigid and old-fashioned industrial style with class offered as a bolt-on upgrade Real alternative to the "billet" trend; these add soul and...$328.95
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.