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
-
JAMES GASKET Drain Plug Washer 62702-52
JAMES GASKET
$13.40A worn or damaged drain plug washer compromises your engine's oil seal integrity, risking slow leaks that degrade performance and engine longevity. The JAMES GASKET drain plug washer restores a...DS174815- SKU:
- DS174815
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- PRODUCT NAME:
- WASHER
- RIDING STYLE:
- STREET
- MATERIAL:
- COPPER
- UNITS:
- 10 PACK
- APPLICATION:
- DRAIN PLUG
$13.40 -
JAMES GASKET Head Gasket - Copper - .16" - XL 16769-73
JAMES GASKET
$33.00A quality head gasket is fundamental to engine sealing integrity—it prevents coolant and oil cross-contamination while maintaining combustion chamber pressure under extreme heat and cylinder stress...DS174800- SKU:
- DS174800
- Availability:
- Ships Same Business Day
- Weight:
- 0.31 LBS
- DISPLACEMENT:
- 1000 CC
- PRODUCT NAME:
- GASKET
- THICKNESS:
- 0,41 MM (0,016')
- UNITS:
- 5 PACK
- THICKNESS IMPERIAL:
- 0.016'
- TYPE:
- CYLINDER HEAD
- MATERIAL:
- COPPER
- RIDING STYLE:
- STREET
- THICKNESS METRIC:
- 0.41 MM
$33.00 -
JAMES GASKET Derby Cover - .030" - Big Twin 25416-70
JAMES GASKET
$19.70A quality derby cover seal is the unsung hero of a clean, leak-free engine bay. This James Gasket cover seal prevents oil weeping at the inspection and derby covers—a common failure point that can...DS174790- SKU:
- DS174790
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- MATERIAL:
- PAPER
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- GASKET
- STYLE:
- PRIMARY
- THICKNESS:
- 0,80 MM (0,030')
- THICKNESS IMPERIAL:
- 0,030'
- THICKNESS METRIC:
- 0.80 MM
- TYPE:
- DERBY COVER
- UNITS:
- EACH
$19.70 -
JAMES GASKET Clutch Cover Gasket - Big Twin 60565-36
JAMES GASKET
$38.10A leaking clutch cover gasket compromises both performance and reliability, leaving your Big Twin vulnerable to oil seepage and potential clutch contamination. The JAMES GASKET Clutch Cover Gasket...DS174780- SKU:
- DS174780
- Availability:
- Ships Same Business Day
- Weight:
- 0.69 LBS
- TYPE:
- CLUTCH COVER
- TYPE:
- DERBY COVER
- MATERIAL:
- CORK
- UNITS:
- 10 PACK
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- GASKET
$38.10 -
JAMES GASKET 4 Speed Trans End Gasket - Big Twin 33295-36-X
JAMES GASKET
$17.60A leaking transmission end gasket doesn't just waste fluid—it compromises your clutch integrity and invites contamination into your drivetrain. The James Gasket 4 Speed Trans End Gasket is engineered...DS174755- SKU:
- DS174755
- Availability:
- Ships Same Business Day
- Weight:
- 0.38 LBS
- TYPE:
- SIDE COVER
- FEATURES:
- BEADED
- MATERIAL:
- PAPER
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- GASKET
- UNITS:
- 5 PACK
$17.60 -
JAMES GASKET Exhaust Stud/Nut Kit EV-1
JAMES GASKET
$20.95A quality exhaust gasket and fastener kit is essential for maintaining a reliable seal at your exhaust manifold, preventing leaks that compromise performance and increase emissions. The JAMES GASKET...DS174749- SKU:
- DS174749
- Availability:
- Ships Same Business Day
- Weight:
- 0.19 LBS
- FEATURES:
- GRAPHITE/KNITTED WIRE GASKETS
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- STREET
- MATERIAL:
- GRAPHITE
- TYPE:
- EXHAUST PORT
- UNITS:
- KIT
- MATERIAL:
- METAL
$20.95 -
JAMES GASKET Fire-Ring Exhaust Gasket - Big Twin 65834-68-X
JAMES GASKET
$19.00A degraded exhaust gasket compromises sealing integrity, causing exhaust leaks that reduce engine efficiency and increase emissions. The JAMES GASKET Fire-Ring Exhaust Gasket delivers reliable,...DS174746- SKU:
- DS174746
- Availability:
- Ships Same Business Day
- Weight:
- 0.19 LBS
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- STREET
- TYPE:
- EXHAUST
- UNITS:
- 10 PACK
$19.00 -
JAMES GASKET Copper Exhaust Gasket - BT 65834-68-A
JAMES GASKET
$19.00A proper exhaust gasket is critical to maintaining a reliable, leak-free seal between your exhaust manifold and cylinder head—any compromise here results in lost horsepower, increased emissions, and...DS174745- SKU:
- DS174745
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- STREET
- TYPE:
- EXHAUST
- UNITS:
- 10 PACK
$19.00 -
JAMES GASKET Exhaust Port Gasket 65324-83
JAMES GASKET
$29.30A leaking exhaust port gasket compromises engine sealing, allows exhaust gases to escape where they shouldn't, and can lead to performance loss and potential engine damage. The JAMES GASKET Exhaust...DS174742- SKU:
- DS174742
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- PRODUCT NAME:
- GASKET
- TYPE:
- EXHAUST PORT
- UNITS:
- 10 PACK
- RIDING STYLE:
- STREET
$29.30 -
JAMES GASKET Exhaust Gasket - FXR/XL 65781-82
JAMES GASKET
$12.95A properly sealed exhaust system is foundational to engine performance and longevity. This James Gasket exhaust gasket eliminates leaks that rob horsepower and allow unburned fuel to escape, ensuring...DS174741- SKU:
- DS174741
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- STYLE:
- CROSSOVER
- UNITS:
- PAIR
- RIDING STYLE:
- STREET
- TYPE:
- EXHAUST
- PRODUCT NAME:
- GASKET
$12.95 -
DRAG SPECIALTIES Exhaust Gasket - Copper - Big Twin 74052
DRAG SPECIALTIES
$9.40A compromised exhaust gasket leads to manifold leaks, power loss, and costly engine damage down the line. DRAG Specialties' copper exhaust gaskets provide reliable sealing across the full operating...DS174739- SKU:
- DS174739
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- GASKET
- TYPE:
- EXHAUST PORT
- UNITS:
- PAIR
$9.40 -
JAMES GASKET Graphite Exhaust Gasket - BT/XL 65324-83-A
JAMES GASKET
$24.10A quality exhaust gasket is critical to maintaining a proper seal between your exhaust manifold and cylinder head—any leak compromises performance, increases emissions, and creates unwanted noise...DS174735- SKU:
- DS174735
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- RIDING STYLE:
- STREET
- UNITS:
- 5 PACK
- PRODUCT NAME:
- GASKET
- TYPE:
- EXHAUST PORT
$24.10 -
JAMES GASKET Oil Pump Cover Gasket - Big Twin 26257-41
JAMES GASKET
$13.90An oil pump cover gasket is a critical sealing component that prevents oil leakage at the pump cover interface—a common failure point on Big Twin engines. Without proper sealing here, you'll face...DS174732- SKU:
- DS174732
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- RIDING STYLE:
- STREET
- MATERIAL:
- PAPER
- PRODUCT NAME:
- GASKET
- STYLE:
- COVER
- TYPE:
- OIL PUMP
- UNITS:
- 10 PACK
$13.90Qty in Cart: 0Quantity:Price:$13.90Subtotal: -
JAMES GASKET Oil Pump Cover - Big Twin 26255-41
JAMES GASKET
$13.90A quality oil pump cover is critical to maintaining proper engine sealing and preventing costly oil leaks that compromise engine longevity. The JAMES GASKET Oil Pump Cover for Big Twin engines...DS174731- SKU:
- DS174731
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- STYLE:
- COVER
- TYPE:
- OIL PUMP
- UNITS:
- 10 PACK
- RIDING STYLE:
- STREET
- MATERIAL:
- PAPER
- PRODUCT NAME:
- GASKET
$13.90Qty in Cart: 0Quantity:Price:$13.90Subtotal: -
JAMES GASKET Oil Pump Body Gasket 26246-68-D
JAMES GASKET
$14.70Oil seepage from your pump body isn't just messy—it's a sign of degradation that can compromise engine lubrication and long-term reliability. The JAMES GASKET Oil Pump Body Gasket 26246-68-D is...DS174730- SKU:
- DS174730
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- PRODUCT NAME:
- GASKET
- TYPE:
- OIL PUMP
- UNITS:
- 10 PACK
- MATERIAL:
- PAPER
- STYLE:
- BODY
- RIDING STYLE:
- STREET
$14.70 -
JAMES GASKET Oil Pump Gasket Cover 26258-68-D
JAMES GASKET
$14.70A leaking oil pump cover gasket doesn't just waste oil—it creates mess, invites contamination, and signals internal wear that demands immediate attention. JAMES GASKET's Oil Pump Gasket Cover...DS174720- SKU:
- DS174720
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- PRODUCT NAME:
- GASKET
- TYPE:
- OIL PUMP
- UNITS:
- 10 PACK
- MATERIAL:
- PAPER
- RIDING STYLE:
- STREET
- STYLE:
- COVER
$14.70 -
JAMES GASKET Carb - Air Cleaner Gasket - XL/Big Twin 29058-77
JAMES GASKET
$7.70A properly sealed carburetor is fundamental to engine performance and fuel economy. Air leaks around your carb gasket introduce unmeasured fuel mixture, causing rough idle, hesitation, and wasted...DS174715- SKU:
- DS174715
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- MOUNTING POSITION:
- AIR CLEANER TO CARBURETOR
- THICKNESS IMPERIAL:
- 0,030'
- THICKNESS METRIC:
- 0.80 MM
- TYPE:
- CARBURETOR
- UNITS:
- 10 PACK
- RIDING STYLE:
- STREET
- STYLE:
- AIR CLEANER
- THICKNESS:
- 0,80 MM (0,030')
- MATERIAL:
- PAPER
- PRODUCT NAME:
- GASKET
$7.70 -
JAMES GASKET Bendix Manifold Gasket 27023-71
JAMES GASKET
$6.00A compromised intake manifold gasket leads to vacuum leaks, rough idle, and reduced engine efficiency—problems that compound quickly if left unaddressed. The JAMES GASKET Bendix Manifold Gasket...DS174710- SKU:
- DS174710
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- MATERIAL:
- PAPER
- PRODUCT NAME:
- GASKET
- UNITS:
- 10 PACK
- RIDING STYLE:
- STREET
- TYPE:
- CARBURETOR INTAKE
$6.00 -
JAMES GASKET Oil Pump Cover Gasket Big Twin 26257-50-A
JAMES GASKET
$16.60Oil seepage from the pump cover is one of the most common leak points on Big Twin engines, leading to chronic oil loss and potential engine damage if left unchecked. The JAMES GASKET Oil Pump Cover...DS174690- SKU:
- DS174690
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- MATERIAL:
- PAPER
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- GASKET
- TYPE:
- OIL PUMP
- UNITS:
- 10 PACK
- STYLE:
- COVER
$16.60Qty in Cart: 0Quantity:Price:$16.60Subtotal: -
JAMES GASKET Rocker Cover Gasket - Big Twin 17541-48-B
JAMES GASKET
$19.70A failing rocker cover gasket is an easy way to turn a clean engine bay into an oil-weeping mess. The JAMES GASKET Rocker Cover Gasket for Big Twin engines eliminates guesswork with precision...DS174660- SKU:
- DS174660
- Availability:
- Ships Same Business Day
- Weight:
- 0.19 LBS
- THICKNESS IMPERIAL:
- 0,031'
- UNITS:
- 10 PACK
- THICKNESS:
- 0,79 MM (0,031')
- TYPE:
- ROCKER COVER
- RIDING STYLE:
- STREET
- THICKNESS METRIC:
- 0.79 MM
- MATERIAL:
- PAPER
- PRODUCT NAME:
- GASKET
$19.70
