Harley Engine
Harley Bike Engine Parts at JJ Motorsports
Rebuild and boost your Harley's engine with premium parts from JJ Motorsports. Our inventory features complete gasket sets, piston kits, oil filters, pushrod tubes, and coolers designed for maximum strength, leak-free sealing, and high-performance in extreme conditions. Compatible with Big Twins, Softail, Touring, and more, these components support top-end overhauls, oil management, and durability for street rides or custom builds.
Shop trusted brands like Drag Specialties for magnetic filters and Wiseco for forged pistons. Explore related categories such as Harley air and fuel for carb tuning or Harley drivetrain for transmission upgrades.
Top Harley Engine Products
- DRAG SPECIALTIES Magnetic Ring Oil Filter - Chrome - 3-1/4" 140003HP-BX18 – Captures metal particles with pressure relief.
- WISECO Piston Kit .010 .883 XL K1656 – Forged aluminum with rings, pins, and circlips for rebuilds.
- DRAG SPECIALTIES Pushrod Tube Kit Big Twin 75711 – Includes tubes, clips, cups, and springs for complete engine.
- ULTRACOOL Below Regulator Mount Oil Cooler Stainless Steel RF-2CSS – Fits S&S 111/124/143 engines with machined adapter.
- PAUGHCO Ribbed Teardrop Air Cleaner 701-200 – Chrome-plated aluminum with mini filter.
Browse our in-stock inventory below with same-day shipping and expert support. Questions? Contact us for fitment advice!
- Product
- Qty in Cart
- Quantity
- Price
- Subtotal
-
DRAG SPECIALTIES Oil Filter - Black 14-0024B-BX18
DRAG SPECIALTIES
$15.70A quality oil filter is non-negotiable for engine longevity—it directly impacts how effectively contaminants are trapped before they circulate through your engine. This Drag Specialties spin-on filter delivers consistent, reliable filtration across most...20051400- SKU:
- 20051400
- Availability:
- Ships Same Business Day
- Weight:
- 0.72 LBS
- BASE COLOR:
- BLACK
- UNITS:
- EACH
- FEATURES:
- WITHOUT NUT
- FILTER MEDIA MATERIAL:
- PAPER
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- BLACK
- STYLE:
- STANDARD
- PRODUCT NAME:
- OIL FILTER
- TYPE:
- SPIN-ON
$15.70 -
DRAG SPECIALTIES Cam Cover - Twin Cam 25369-010
DRAG SPECIALTIES
$129.27A worn or damaged cam cover compromises engine sealing, leading to oil leaks and potential contamination of critical engine components. The DRAG SPECIALTIES Cam Cover for Twin Cam engines delivers OEM-equivalent fit and function, restoring proper gasket...09400437- SKU:
- 09400437
- Availability:
- Ships Same Business Day
- Weight:
- 2.09 LBS
- MATERIAL:
- DIE-CAST
- COLOR/FINISH:
- CHROME
- MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- COVER
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- TYPE:
- CAM
$129.27 -
DRAG SPECIALTIES Transmission Case Magnetic Plug D0013-007
DRAG SPECIALTIES
$14.79Metal shavings circulating through your transmission aren't just wear debris—they're early warning signs of internal damage that compound over time. This magnetic plug positions the magnet deeper into the case where it captures ferrous particles before...07100239- SKU:
- 07100239
- Availability:
- Ships Same Business Day
- Weight:
- 0.16 LBS
- TYPE:
- MAGNETIC
- UNITS:
- EACH
- BASE COLOR:
- SILVER
- PRODUCT NAME:
- DRAIN PLUG
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- SILVER
$14.79Qty in Cart: 0Quantity:Price:$14.79Subtotal: -
DRAG SPECIALTIES Oil Filter with Nut - Chrome 14-0003K-BX18
DRAG SPECIALTIES
$15.70A quality oil filter is non-negotiable for engine longevity and performance. This Drag Specialties spin-on filter delivers reliable contaminant removal across most Harley-Davidson models, keeping your oil clean and your engine protected through extended...07120009- SKU:
- 07120009
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
- BASE FINISH:
- CHROME
- FEATURES:
- INCLUDES NUT
- FILTER MEDIA MATERIAL:
- PAPER
- PRODUCT NAME:
- OIL FILTER
- TYPE:
- SPIN-ON
- COLOR/FINISH:
- CHROME
- STYLE:
- LATE (84 XL)
- UNITS:
- EACH
- RIDING STYLE:
- STREET
$15.70Qty in Cart: 0Quantity:Price:$15.70Subtotal: -
DRAG SPECIALTIES Cylinder - 1340cc - 1984-1999 Big Twin 16510-83A-LB2
DRAG SPECIALTIES
$254.35If your 1340cc Big Twin is experiencing cylinder wear, scoring, or damage, a factory-spec replacement is the most reliable path to restored compression and consistent performance. DRAG SPECIALTIES cylinders are engineered for direct fitment on 1984-1999...DS750507- SKU:
- DS750507
- Availability:
- Ships Same Business Day
- Weight:
- 8.44 LBS
- BORE SIZE IMPERIAL:
- 3.498'
- DISPLACEMENT:
- 1340 CC
- STROKE LENGTH IMPERIAL:
- 4-1/4'
- TYPE:
- REAR
- MATERIAL:
- ALUMINUM
- MATERIAL:
- CAST
- MATERIAL:
- IRON
- COLOR/FINISH:
- ALUMINUM
- PRODUCT NAME:
- CYLINDER
- RIDING STYLE:
- STREET
- TYPE:
- FRONT
- UNITS:
- EACH
$254.35Qty in Cart: 0Quantity:Price:$254.35Subtotal: -
DRAG SPECIALTIES Rocker Arm Shim Kit - Big Twin 04-0988-HC
DRAG SPECIALTIES
$19.03If you're running a classic Shovelhead and tired of constant valve train adjustments, this shim kit is your solution. Proper rocker arm shimming eliminates lift loss, prevents valvetrain noise, and ensures consistent performance between rebuilds. Once...09270004- SKU:
- 09270004
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- UNITS:
- KIT
- MOUNTING POSITION:
- FRONT
- APPLICATION:
- EXHAUST
- PRODUCT NAME:
- ADJUSTER KIT
- APPLICATION:
- INTAKE
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- STREET
- TYPE:
- ROCKER ARM SHAFT
$19.03Qty in Cart: 0Quantity:Price:$19.03Subtotal: -
DRAG SPECIALTIES Cylinder - 1340cc - 1984-1999 Evolution - Black 09310017BLK
DRAG SPECIALTIES
$334.91If your Evolution engine is showing signs of wear or you're rebuilding from the ground up, factory-spec replacement cylinders are essential to restoring reliable power and proper ring sealing. Drag Specialties cylinders feature ductile cast-iron sleeves...09310017- SKU:
- 09310017
- Availability:
- Ships Same Business Day
- Weight:
- 8.41 LBS
- MATERIAL:
- CAST
- PRODUCT NAME:
- CYLINDER
- RIDING STYLE:
- STREET
- BORE SIZE IMPERIAL:
- 3.500'
- COLOR/FINISH:
- HIGHLIGHTED FINS
- COLOR/FINISH:
- ALUMINUM
- COLOR/FINISH:
- BLACK
- DISPLACEMENT:
- 1340 CC
- MATERIAL:
- ALUMINUM
- MATERIAL:
- IRON
- UNITS:
- EACH
$334.91 -
DRAG SPECIALTIES Oil Pump Assembly - Big Twin 87181
DRAG SPECIALTIES
$294.63A failing oil pump compromises engine lubrication and can lead to catastrophic bearing wear or complete engine failure. This DRAG Specialties replacement assembly restores proper oil circulation and pressure to your Big Twin engine, ensuring consistent...09320108- SKU:
- 09320108
- Availability:
- Ships Same Business Day
- Weight:
- 2.21 LBS
- FLOW RATE:
- STANDARD
- UNITS:
- EACH
- PRODUCT NAME:
- PUMP ASSEMBLY
- COLOR/FINISH:
- ALUMINUM
- TYPE:
- OIL
- BASE COLOR:
- SILVER
- MATERIAL:
- ALUMINUM
- RIDING STYLE:
- STREET
$294.63Qty in Cart: 0Quantity:Price:$294.63Subtotal: -
DRAG SPECIALTIES Oil Pump Assembly - Big Twin 87182
DRAG SPECIALTIES
$294.63A reliable oil pump is the foundation of engine longevity—without consistent oil pressure and circulation, even the most carefully tuned Big Twin will suffer accelerated wear and potential catastrophic failure. The DRAG Specialties Oil Pump Assembly...09320109- SKU:
- 09320109
- Availability:
- Ships Same Business Day
- Weight:
- 2.31 LBS
- FLOW RATE:
- STANDARD
- UNITS:
- EACH
- BASE COLOR:
- SILVER
- MATERIAL:
- ALUMINUM
- COLOR/FINISH:
- ALUMINUM
- RIDING STYLE:
- STREET
- TYPE:
- OIL
- PRODUCT NAME:
- PUMP ASSEMBLY
$294.63Qty in Cart: 0Quantity:Price:$294.63Subtotal: -
DRAG SPECIALTIES Rear Motor Mount Kit - XL E28-0022K
DRAG SPECIALTIES
$213.01Motor mounts are the unsung foundation of any high-performance build—worn or compromised isolators allow excessive engine movement, which degrades throttle response, increases vibration, and can damage surrounding components. The DRAG SPECIALTIES Rear...09330119- SKU:
- 09330119
- Availability:
- Ships Same Business Day
- Weight:
- 3.45 LBS
- PRODUCT NAME:
- MOUNT KIT
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- BLACK
- UNITS:
- KIT
- BASE COLOR:
- BLACK
- MOUNTING POSITION:
- REAR
- TYPE:
- ISOLATOR
$213.01 -
DRAG SPECIALTIES Cam Cover - Chrome - Big Twin 35-0025
DRAG SPECIALTIES
$254.35A cam cover isn't just cosmetic—it protects critical engine internals while adding a polished, finished appearance to your Big Twin's top end. This chrome die-cast aluminum cover maintains precise OEM tolerances with pre-installed and reamed bushings,...09400784- SKU:
- 09400784
- Availability:
- Ships Same Business Day
- Weight:
- 2.90 LBS
- MATERIAL:
- ALUMINUM
- RIDING STYLE:
- STREET
- TYPE:
- CAM
- UNITS:
- KIT
- COLOR/FINISH:
- CHROME
- PRODUCT NAME:
- COVER
$254.35 -
DRAG SPECIALTIES Points Cover - Chrome/Gold/Black 30-0152CA
DRAG SPECIALTIES
$59.31A points cover serves as both functional protection and visual statement on your engine bay. This Drag Specialties piece shields your ignition points from dirt and moisture while delivering authentic cruiser aesthetics that complement classic and modern...09400840- SKU:
- 09400840
- Availability:
- Ships Same Business Day
- Weight:
- 0.42 LBS
- BASE FINISH:
- CHROME
- COLOR/FINISH:
- BLACK
- COLOR/FINISH:
- GOLD
- STYLE:
- LIVE TO RIDE
- TYPE:
- POINT
- COLOR/FINISH:
- CHROME
- MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- COVER
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- BASE COLOR:
- GOLD
$59.31Qty in Cart: 0Quantity:Price:$59.31Subtotal: -
DRAG SPECIALTIES Points Cover - Chrome/Black 30-0187CA
DRAG SPECIALTIES
$35.99If you're running a classic or vintage engine, your points cover isn't just functional—it's a focal point of your engine bay. The Drag Specialties Points Cover delivers the polish and detail that separates a properly finished engine from an amateur...09400841- SKU:
- 09400841
- Availability:
- Ships Same Business Day
- Weight:
- 0.24 LBS
- BASE FINISH:
- CHROME
- COLOR/FINISH:
- BLACK
- COLOR/FINISH:
- CHROME
- MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- COVER
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- STYLE:
- LIVE TO RIDE
- TYPE:
- POINT
$35.99Qty in Cart: 0Quantity:Price:$35.99Subtotal: -
DRAG SPECIALTIES Points Cover - Chrome/Gold/Black 30-0187GA
DRAG SPECIALTIES
$59.31A points cover serves as both a protective component and a visual statement on your engine bay—shielding critical ignition components while contributing to your bike's overall aesthetic. Whether you're running a classic cruiser or a vintage-inspired...09400842- SKU:
- 09400842
- Availability:
- Ships Same Business Day
- Weight:
- 0.23 LBS
- COLOR/FINISH:
- GOLD
- STYLE:
- LIVE TO RIDE
- BASE FINISH:
- CHROME
- COLOR/FINISH:
- BLACK
- COLOR/FINISH:
- CHROME
- MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- COVER
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- BASE COLOR:
- GOLD
- TYPE:
- POINT
$59.31 -
DRAG SPECIALTIES Points Cover - Chrome/Gold/Black 30-0152EA
DRAG SPECIALTIES
$59.31Your points cover is one of the most visible components on your engine—it deserves to look as good as it performs. This Drag Specialties cover combines die-cast durability with classic styling, giving your ride authentic cruiser aesthetics without...09400844- SKU:
- 09400844
- Availability:
- Ships Same Business Day
- Weight:
- 0.42 LBS
- COLOR/FINISH:
- CHROME
- PRODUCT NAME:
- COVER
- UNITS:
- EACH
- BASE COLOR:
- GOLD
- BASE FINISH:
- CHROME
- COLOR/FINISH:
- BLACK
- COLOR/FINISH:
- GOLD
- MATERIAL:
- ALUMINUM
- RIDING STYLE:
- STREET
- STYLE:
- LIVE TO RIDE
- TYPE:
- POINT
$59.31 -
DRAG SPECIALTIES Rocker Box - Black - Big Twin 037006
DRAG SPECIALTIES
$331.73Rocker box failures compromise engine reliability and lead to costly oil leaks that damage your motor's performance. The DRAG SPECIALTIES Rocker Box delivers precise engineering with exact dimensional tolerances, ensuring a leakproof seal that keeps your...09401240- SKU:
- 09401240
- Availability:
- Ships Same Business Day
- Weight:
- 4.46 LBS
- COLOR/FINISH:
- SATIN
- MATERIAL:
- ALUMINUM
- RIDING STYLE:
- STREET
- TYPE:
- ROCKER BOX
- BASE COLOR:
- BLACK
- BASE FINISH:
- SATIN
- COLOR/FINISH:
- BLACK
- PRODUCT NAME:
- COVER
- UNITS:
- KIT
$331.73 -
DRAG SPECIALTIES Points Cover - Black 30-0170AWB
DRAG SPECIALTIES
$28.57A points cover serves as both a functional protective component and a visible detail that defines your bike's aesthetic. This Drag Specialties cover features precision-radiused edges that integrate seamlessly with matching brake caliper inserts and fork...09401241- SKU:
- 09401241
- Availability:
- Ships Same Business Day
- Weight:
- 0.31 LBS
- COLOR/FINISH:
- WRINKLE
- PRODUCT NAME:
- COVER
- TYPE:
- POINTS
- RIDING STYLE:
- STREET
- STYLE:
- RADIUS
- UNITS:
- EACH
- COLOR/FINISH:
- BLACK
$28.57Qty in Cart: 0Quantity:Price:$28.57Subtotal: -
DRAG SPECIALTIES Points Cover - Black 30-0152KSB
DRAG SPECIALTIES
$24.33A quality points cover protects one of your engine's most critical ignition components from dirt, moisture, and debris while maintaining the polished aesthetic of your build. This Drag Specialties cover delivers functional protection without compromising...09401244- SKU:
- 09401244
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- PRODUCT NAME:
- COVER
- TYPE:
- POINTS
- UNITS:
- EACH
- COLOR/FINISH:
- FLAT
- RIDING STYLE:
- STREET
- STYLE:
- RADIUS
- COLOR/FINISH:
- BLACK
$24.33 -
DRAG SPECIALTIES Exhaust Gasket 01-0127
DRAG SPECIALTIES
$90.25A reliable exhaust gasket is essential for maintaining a proper seal between exhaust manifold and cylinder head—any leak will compromise engine efficiency and allow unwanted emissions escape. The DRAG SPECIALTIES 01-0127 is engineered to withstand...09342556- SKU:
- 09342556
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- TYPE:
- EXHAUST PORT
- PRODUCT NAME:
- GASKET
- UNITS:
- 10 PACK
- RIDING STYLE:
- STREET
$90.25 -
DRAG SPECIALTIES Cam Cover - Black - M8 R83901B
DRAG SPECIALTIES
$153.65The M8 cam cover is a critical component that protects your engine's valve train from contamination while maintaining a clean, finished appearance. A quality cover ensures proper gasket sealing, prevents oil leakage, and keeps internal components...09401992- SKU:
- 09401992
- Availability:
- Ships Same Business Day
- Weight:
- 1.16 LBS
- MATERIAL:
- ALUMINUM
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- BLACK
- COLOR/FINISH:
- MATTE
- MATERIAL:
- DIE-CAST
- TYPE:
- CAM
- UNITS:
- EACH
- PRODUCT NAME:
- COVER
$153.65
