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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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
S&S Cycle - Oil Control Valve fits '17-'23 M-Eight Models
S&S Cycle
$50.95S&S Cycle - Oil Control Valve fits '17-'23 M-Eight Models Features: The factory oil control valve on all oil cooled M8 engines regulates the amount of oil flowing to the oil cooler/heads The...$50.95 -
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
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
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 -
Jims - 24600-58B - Crankcase Bushing
Jims
$173.51Jims - 24600-58B - Crankcase Bushing Features 360 oiling Made in the U.S.A. Replacement Part for OEM Number(s): 2460058,2460058A,2460058B Specs$173.51 -
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
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
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
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 - 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 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 -
Out of stock
Colony - Acorn Rocker Box Bolts and Washers -Chrome fits '57-'76 XL
Colony Machine
$63.99The rocker box bolts and washers are for both heads. Chrome finish Fits: XL 1957-1976$63.99 -
Out of stock
EMD - Ribster Cam Cover - Fits '77-'90 XL Models
EMD
$178.95 - $195.95EMD - Ribster Cam Cover - Fits '77-'90 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 OEM...$178.95 - $195.95 -
Out of stock
EMD - Ribbed Cam Cover - fits '17-Up M8
EMD
$310.95 - $330.95EMD - Ribbed Cam Cover - fits '17-Up M8 These Ribbed EMD covers are the real alternative to the cold, rigid and old fashioned “Billet” style. Features: Manufactured in die cast aluminum, CNC...$310.95 - $330.95 -
Out of stock
Arlen Ness - Bolt Kit - Cable Clutch - Titanium - 12-Point - M8/Twin Cam - Fits 2007-2025 Electra Glide / Street Glide, 2007-2025 Road Glide, 2007-2025 Road King & More
Arlen Ness
$69.95Arlen Ness Bolt Kit - Cable Clutch - Titanium - 12-Point - M8/Twin Cam Fits: 2007-2025 Electra Glide / Street Glide, 2007-2025 Road Glide, 2007-2025 Road King, 2009-2025 Tri Glide, 2021-2025...$69.95 -
Out of stock
S&S Cycle - 310-1012C - Cam Chest Kit - Oil Cooled - Chain Drive - 475 Cam - Black Pushrod Tubes - M8
S&S Cycle
$1,721.95S&S Cycle - 310-1012C - Cam Chest Kit - Oil Cooled - Chain Drive - 475 Cam - Black Pushrod Tubes - M8FeaturesPassage plugs are removable for servicingIndependent scavenge sections for the flywheel...$1,721.95 -
Out of stock
S&S Cycle - 310-0997C - Cam Support Plate and Oil Pump - Water Cooled - VVT M8
S&S Cycle
$836.95S&S Cycle - 310-0997C - Cam Support Plate and Oil Pump - Water Cooled - VVT M8FeaturesIndependent Scavenge Sections for Flywheel Cavity and Cam ChestDebris Screens in both scavenge pickupsMagnet in...$836.95 -
Out of stock
S&S Cycle - 310-1264A - Cam Chest - Water Cooled - Chain Drive - Black Pushrod Tubes - M8
S&S Cycle
$1,522.95S&S Cycle - 310-1264A - Cam Chest - Water Cooled - Chain Drive - Black Pushrod Tubes - M8FeaturesOil Pump/Cam Plate:Precision machined from billet aluminumPassage plugs are removable for...$1,522.95 -
Out of stock
S&S Cycle - 310-1262A - Cam Chest - Oil Cooled - Chain Drive - Black Pushrod Tubes - M8
S&S Cycle
$1,522.95S&S Cycle - 310-1262A - Cam Chest - Oil Cooled - Chain Drive - Black Pushrod Tubes - M8FeaturesOil Pump/Cam Plate:Precision machined from billet aluminumPassage plugs are removable for...$1,522.95 -
Out of stock
S&S Cycle - 310-1008C - Cam Chest Kit - Water Cooled - Chain Drive - 475 Cam - Black Pushrod Tubes - M8
S&S Cycle
$1,721.95S&S Cycle - 310-1008C - Cam Chest Kit - Water Cooled - Chain Drive - 475 Cam - Black Pushrod Tubes - M8FeaturesPassage plugs are removable for servicingIndependent scavenge sections for the flywheel...$1,721.95 -
Out of stock
S&S Cycle - 310-1004C - Cam Chest Kit - Oil Cooled - Chain Drive - 475 Cam - Chrome Pushrod Tubes - M8
S&S Cycle
$1,721.95S&S Cycle - 310-1004C - Cam Chest Kit - Oil Cooled - Chain Drive - 475 Cam - Chrome Pushrod Tubes - M8FeaturesPassage plugs are removable for servicingIndependent scavenge sections for the flywheel...$1,721.95
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.