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
-
COMETIC Oil Pump Inner Small O-Ring C9449
COMETIC
$7.40COMETIC Oil Pump Inner Small O-Ring C9449High-quality products for long-term reliability, Manufactured from premium fuel-resistant materials that will not creep, crack or become brittle, Made in the U.S.A.09350159- SKU:
- 09350159
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- MATERIAL:
- VITON
- PRODUCT NAME:
- O-RING
- APPLICATION:
- OIL PUMP
- RIDING STYLE:
- STREET
- UNITS:
- 10 PACK
$7.40 -
COMETIC Derby Cover O-Ring - Big Twin C9662
COMETIC
$15.40COMETIC Derby Cover O-Ring Big Twin C9662High-quality products for long-term reliability, Manufactured from premium fuel-resistant materials that will not creep, crack or become brittle, Made in the U.S.A.09350160- SKU:
- 09350160
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- APPLICATION:
- DERBY COVER
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- O-RING
- UNITS:
- 5 PACK
- MATERIAL:
- NITRILE RUBBER
$15.40 -
COMETIC Cam Support O-Ring C9631
COMETIC
$3.20COMETIC Cam Support O-Ring C9631Manufactured from premium fuel-resistant materials that will not creep, crack or become brittle, Made in the U.S.A.09350165- SKU:
- 09350165
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- APPLICATION:
- CAM SUPPORT
- UNITS:
- 10 PACK
- MATERIAL:
- VITON
- PRODUCT NAME:
- O-RING
- RIDING STYLE:
- STREET
$3.20 -
COMETIC EFI Map Senser Seal - Twin Cam C9630
COMETIC
$12.70COMETIC EFI Map Senser Seal Twin Cam C9630High-quality products for long-term reliability, Manufactured from premium fuel-resistant materials that will not creep, crack or become brittle, Made in the U.S.A.09350166- SKU:
- 09350166
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- APPLICATION:
- CAM MANIFOLD
- PRODUCT NAME:
- SEAL
- RIDING STYLE:
- STREET
- UNITS:
- 10 PACK
- MATERIAL:
- SILICONE
$12.70 -
COMETIC Umbrella Seal C9481
COMETIC
$8.40COMETIC Umbrella Seal C9481High-quality products for long-term reliability, Manufactured from premium fuel-resistant materials that will not creep, crack or become brittle, Made in the U.S.A.09350167- SKU:
- 09350167
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- PRODUCT NAME:
- SEAL
- UNITS:
- 10 PACK
- RIDING STYLE:
- STREET
- MATERIAL:
- VITON
- APPLICATION:
- UMBRELLA VALVE
$8.40 -
COMETIC Rocker Box Washer C9400
COMETIC
$5.30COMETIC Rocker Box Washer C9400High-quality products for long-term reliability, Manufactured from premium fuel-resistant materials that will not creep, crack or become brittle, Made in the U.S.A.09350168- SKU:
- 09350168
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- RIDING STYLE:
- STREET
- UNITS:
- 10 PACK
- APPLICATION:
- ROCKER COVER
- MATERIAL:
- COPPER
- PRODUCT NAME:
- WASHER
$5.30Qty in Cart: 0Quantity:Price:$5.30Subtotal: -
COMETIC Paper Rocker Box Washer C9286
COMETIC
$4.70COMETIC Paper Rocker Box Washer C9286High-quality products for long-term reliability, Manufactured from premium fuel-resistant materials that will not creep, crack or become brittle, Made in the U.S.A.09350169- SKU:
- 09350169
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- UNITS:
- 10 PACK
- RIDING STYLE:
- STREET
- APPLICATION:
- ROCKER COVER
- MATERIAL:
- RUBBER
- PRODUCT NAME:
- WASHER
$4.70Qty in Cart: 0Quantity:Price:$4.70Subtotal: -
COMETIC O-Ring C9459
COMETIC
$3.20COMETIC O-Ring C9459Made in the U.S.A.09350170- SKU:
- 09350170
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- APPLICATION:
- DIPSTICK COVER
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- O-RING
- UNITS:
- 25 PACK
- APPLICATION:
- PUSHROD COVER
- MATERIAL:
- NITRILE RUBBER
$3.20 -
COMETIC Intake Manifold Seal Kit - Evolution C9131
COMETIC
$14.95COMETIC Intake Manifold Seal Kit Evolution C9131Kit contains one carburetor to intake seal (27002-89) and two intake to cylinder head seals (26995-86B), Made in the U.S.A.09350172- SKU:
- 09350172
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- APPLICATION:
- INTAKE MANIFOLD TO CARBURETOR
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- PRODUCT NAME:
- SEAL
$14.95 -
COMETIC Carb/Manifold Sealing Ring C9088
COMETIC
$10.95COMETIC Carb/Manifold Sealing Ring C9088High-quality products for long-term reliability, Manufactured from premium fuel-resistant materials that will not creep, crack or become brittle, Made in the U.S.A.09350173- SKU:
- 09350173
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- MATERIAL:
- FIBER
- APPLICATION:
- INTAKE MANIFOLD TO CARBURETOR
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- SEAL
- THICKNESS IMPERIAL:
- 0.031'
- UNITS:
- EACH
$10.95 -
COMETIC Oil Pump Cover O-Ring C9440
COMETIC
$6.25COMETIC Oil Pump Cover O-Ring C9440High-quality products for long-term reliability, Manufactured from premium fuel-resistant materials that will not creep, crack or become brittle, Made in the U.S.A.09350174- SKU:
- 09350174
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- MATERIAL:
- VITON
- PRODUCT NAME:
- O-RING
- APPLICATION:
- OIL PUMP
- RIDING STYLE:
- STREET
- UNITS:
- 25 PACK
$6.25Qty in Cart: 0Quantity:Price:$6.25Subtotal: -
COMETIC Oil Pump Drive Gear Seal C9349
COMETIC
$9.50COMETIC Oil Pump Drive Gear Seal C9349High-quality products for long-term reliability, Manufactured from premium fuel-resistant materials that will not creep, crack or become brittle, Made in the U.S.A.09350175- SKU:
- 09350175
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- PRODUCT NAME:
- SEAL
- APPLICATION:
- OIL PUMP
- RIDING STYLE:
- STREET
- APPLICATION:
- MAIN DRIVE GEAR
- MATERIAL:
- VITON
- UNITS:
- 5 PACK
$9.50Qty in Cart: 0Quantity:Price:$9.50Subtotal: -
COMETIC Sprocket Shaft Seal C9351
COMETIC
$11.60COMETIC Sprocket Shaft Seal C9351COMETIC Sprocket Shaft Seal09350176- SKU:
- 09350176
- Availability:
- Ships Same Business Day
- Weight:
- 0.26 LBS
- UNITS:
- 5 PACK
- MATERIAL:
- VITON
- RIDING STYLE:
- STREET
- APPLICATION:
- SPROCKET SHAFT
- PRODUCT NAME:
- SEAL
$11.60Qty in Cart: 0Quantity:Price:$11.60Subtotal: -
COMETIC Derby Cover Bolt Washer C9363
COMETIC
$5.20COMETIC Derby Cover Bolt Washer C9363High-quality products for long-term reliability, Manufactured from premium fuel-resistant materials that will not creep, crack or become brittle, Made in the U.S.A.09350177- SKU:
- 09350177
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- MATERIAL:
- AFM (ALUMINUM FOAM MATERIAL)
- PRODUCT NAME:
- WASHER
- UNITS:
- 5 PACK
- RIDING STYLE:
- STREET
- APPLICATION:
- DERBY COVER
$5.20 -
COMETIC Upper Pushrod Cover O-Ring Pack C9451
COMETIC
$6.25COMETIC Upper Pushrod Cover O-Ring Pack C9451COMETIC Upper Pushrod Cover O-Ring Pack09350178- SKU:
- 09350178
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- RIDING STYLE:
- STREET
- MATERIAL:
- AFM (ALUMINUM FOAM MATERIAL)
- PRODUCT NAME:
- O-RING
- THICKNESS:
- 0,060'
- APPLICATION:
- PUSHROD COVER
- APPLICATION:
- ROCKER COVER
- THICKNESS IMPERIAL:
- 0.060'
- UNITS:
- 10 PACK
$6.25Qty in Cart: 0Quantity:Price:$6.25Subtotal: -
COMETIC Starter Housing O-Ring Pack C9433
COMETIC
$5.30COMETIC Starter Housing O-Ring Pack C9433COMETIC Starter Housing O-Ring Pack09350179- SKU:
- 09350179
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- PRODUCT NAME:
- O-RING
- UNITS:
- 25 PACK
- RIDING STYLE:
- STREET
- APPLICATION:
- STARTER HOUSING
- MATERIAL:
- NITRILE RUBBER
$5.30 -
COMETIC Starter Shaft Seal C9491
COMETIC
$9.50COMETIC Starter Shaft Seal C9491Made in the U.S.A.09350180- SKU:
- 09350180
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- MATERIAL:
- VITON
- APPLICATION:
- STARTER SHAFT
- UNITS:
- 5 PACK
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- SEAL
$9.50 -
COMETIC Starter Shaft Seal C9379
COMETIC
$14.80COMETIC Starter Shaft Seal C9379Made in the U.S.A.09350181- SKU:
- 09350181
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- PRODUCT NAME:
- SEAL
- APPLICATION:
- STARTER SHAFT
- UNITS:
- 5 PACK
- MATERIAL:
- VITON
- RIDING STYLE:
- STREET
$14.80 -
COMETIC Starter Shaft Seal C9509
COMETIC
$16.90COMETIC Starter Shaft Seal C9509Made in the U.S.A.09350182- SKU:
- 09350182
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- APPLICATION:
- STARTER SHAFT
- UNITS:
- 5 PACK
- PRODUCT NAME:
- SEAL
- MATERIAL:
- DUAL LIP VITON
- RIDING STYLE:
- STREET
$16.90 -
COMETIC Drain Plug Washer C9498
COMETIC
$6.70COMETIC Drain Plug Washer C9498High-quality products for long-term reliability, Manufactured from premium fuel-resistant materials that will not creep, crack or become brittle, Made in the U.S.A.09350185- SKU:
- 09350185
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- MATERIAL:
- NYLON
- RIDING STYLE:
- STREET
- THICKNESS:
- 0,063'
- THICKNESS IMPERIAL:
- 0.063'
- UNITS:
- 10 PACK
- APPLICATION:
- DRAIN PLUG
- PRODUCT NAME:
- WASHER
$6.70
