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 Main Drive Gear O-Ring - FXST 11166
JAMES GASKET
$15.90Top quality main drive gear shaft sealsDS174395- SKU:
- DS174395
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- UNITS:
- 25 PACK
- RIDING STYLE:
- STREET
- APPLICATION:
- MAIN DRIVE GEAR
- PRODUCT NAME:
- SEAL
$15.90 -
JAMES GASKET Air Control O-Ring 11140
JAMES GASKET
$10.70Made in the U.S.A.DS174392- SKU:
- DS174392
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- PRODUCT NAME:
- O-RING
- TYPE:
- FRONT FORK
- UNITS:
- 25 PACK
- APPLICATION:
- AIR CONTROL CAP
- RIDING STYLE:
- STREET
$10.70 -
JAMES GASKET Pushrod Cover Cork 17955-48-D
JAMES GASKET
$9.95Made in the U.S.A.DS174390- SKU:
- DS174390
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- APPLICATION:
- PUSHROD COVER
- PRODUCT NAME:
- SEAL
- UNITS:
- 10 PACK
- RIDING STYLE:
- STREET
$9.95 -
JAMES GASKET Lower Neoprene Rocker Cover Gasket 17353-89
JAMES GASKET
$35.80Made from a solid steel sheet coated on two sides with a high-temperature elastomer. Strategically placed elastomer beading helps ensure a positive seal while our clear silicone conformal coating fills in minor imperfections in the flanges and provides...DS174389- SKU:
- DS174389
- Availability:
- Ships Same Business Day
- Weight:
- 0.19 LBS
- UNITS:
- 5 PACK
- PRODUCT NAME:
- GASKET
- MATERIAL:
- NEOPRENE
- MOUNTING POSITION:
- LOWER
- RIDING STYLE:
- STREET
- TYPE:
- ROCKER BOX
$35.80 -
JAMES GASKET Upper Neoprene Rocker Cover Gasket - XL 17354-89
JAMES GASKET
$35.10Made from a solid steel sheet coated on two sides with a high-temperature elastomer. Strategically placed elastomer beading helps ensure a positive seal while our clear silicone conformal coating fills in minor imperfections in the flanges and provides...DS174388- SKU:
- DS174388
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- PRODUCT NAME:
- GASKET
- MATERIAL:
- NEOPRENE
- MOUNTING POSITION:
- UPPER
- UNITS:
- 5 PACK
- RIDING STYLE:
- STREET
- TYPE:
- ROCKER BOX
$35.10 -
JAMES GASKET Trans Quad Seal 11165
JAMES GASKET
$23.60Made in the U.S.A.DS174387- SKU:
- DS174387
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- APPLICATION:
- TRANSMISSION
- PRODUCT NAME:
- X-RING
- STYLE:
- 5-SPEED
- TYPE:
- QUAD SEAL
- UNITS:
- 25 PACK
- RIDING STYLE:
- STREET
$23.60 -
JAMES GASKET Cam Cover Gasket - Big Twin 25225-93
JAMES GASKET
$35.95Replacement gaskets for cam chestsDS174386- SKU:
- DS174386
- Availability:
- Ships Same Business Day
- Weight:
- 0.19 LBS
- MATERIAL:
- PAPER
- RIDING STYLE:
- STREET
- DISPLACEMENT:
- 1340 CC
- PRODUCT NAME:
- GASKET
- TYPE:
- CAM COVER
- UNITS:
- 10 PACK
$35.95 -
JAMES GASKET Dipstick/Filler Cap O-Ring 62673-90
JAMES GASKET
$8.50Dip stick o-ring for Harley Davidson modelsDS174385- SKU:
- DS174385
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- RIDING STYLE:
- STREET
- TYPE:
- OIL
- UNITS:
- 10 PACK
- PRODUCT NAME:
- O-RING
- APPLICATION:
- OIL TANK CAP
$8.50 -
JAMES GASKET Lower Dipstick Cover O-Ring - FXDB 62672-90
JAMES GASKET
$8.50Dip stick o-ring for Harley Davidson modelsDS174384- SKU:
- DS174384
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- RIDING STYLE:
- STREET
- UNITS:
- 10 PACK
- PRODUCT NAME:
- O-RING
- APPLICATION:
- DIPSTICK
- TYPE:
- OIL
$8.50 -
JAMES GASKET Cam Cover Gasket - XL 25263-90
JAMES GASKET
$29.10Replacement gaskets for cam chestsDS174383- SKU:
- DS174383
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- THICKNESS IMPERIAL:
- 0,031'
- TYPE:
- CAM COVER
- UNITS:
- 10 PACK
- MATERIAL:
- PAPER
- RIDING STYLE:
- STREET
- THICKNESS METRIC:
- 0.79 MM
- THICKNESS:
- 0,79 MM (0,031')
- PRODUCT NAME:
- GASKET
$29.10 -
JAMES GASKET Primary Cover Gasket - Silicon 60539-89-X
JAMES GASKET
$132.00Top quality gaskets, seals and o-rings meet or exceed OEM specifications, Primary gasket features silicone beading, Made in the U.S.A.DS174382- SKU:
- DS174382
- Availability:
- Ships Same Business Day
- Weight:
- 0.38 LBS
- MATERIAL:
- PAPER
- PRODUCT NAME:
- GASKET
- UNITS:
- 5 PACK
- RIDING STYLE:
- STREET
- TYPE:
- PRIMARY COVER
- THICKNESS IMPERIAL:
- 0.062'
$132.00 -
JAMES GASKET Intake Seal Kit 27002-89-K
JAMES GASKET
$17.95Kits contain carb-to-intake seal and two intake-to-cylinder head sealsDS174381- SKU:
- DS174381
- Availability:
- Ships Same Business Day
- Weight:
- 0.08 LBS
- THICKNESS:
- 40 MM
- UNITS:
- KIT
- APPLICATION:
- INTAKE MANIFOLD TO CARBURETOR
- RIDING STYLE:
- STREET
- STYLE:
- FOR ORIGINAL EQUIPMENT CARBS
- THICKNESS METRIC:
- 40 MM
- PRODUCT NAME:
- SEAL
$17.95 -
JAMES GASKET Primary Inspection Cover Gasket - Big Twin 60567-36
JAMES GASKET
$13.90Latest additions to our line of high-quality genuine James gaskets, seals and O-rings, Cover seals are a seal, not a gasket, Cover seals are molded rubber, beaded oil seals with metal inserts and work with all inspection and derby covers; fit billet,...DS174380- SKU:
- DS174380
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- RIDING STYLE:
- STREET
- MATERIAL:
- CORK
- PRODUCT NAME:
- GASKET
- UNITS:
- 10 PACK
- TYPE:
- INSPECTION COVER
$13.90 -
JAMES GASKET Trans Filler Plug O-Ring - Big Twin 11178
JAMES GASKET
$5.50Made in the U.S.A.DS174379- SKU:
- DS174379
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- TYPE:
- TRANSMISSION
- APPLICATION:
- FILLER PLUG
- UNITS:
- 25 PACK
- PRODUCT NAME:
- O-RING
- RIDING STYLE:
- STREET
$5.50 -
JAMES GASKET Mainshaft 5 Speed O-Ring 11162
JAMES GASKET
$13.30Made in the U.S.A.DS174378- SKU:
- DS174378
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- APPLICATION:
- MAINSHAFT
- PRODUCT NAME:
- O-RING
- STYLE:
- 5-SPEED
- UNITS:
- 25 PACK
- APPLICATION:
- TRANSMISSION
- RIDING STYLE:
- STREET
- TYPE:
- OIL
$13.30 -
JAMES GASKET Counter Shafter O-Ring 11115
JAMES GASKET
$13.30Made in the U.S.A.DS174377- SKU:
- DS174377
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- PRODUCT NAME:
- O-RING
- UNITS:
- 25 PACK
- APPLICATION:
- COUNTERSHAFT
- APPLICATION:
- TRANSMISSION
- RIDING STYLE:
- STREET
- STYLE:
- 4-SPEED
$13.30 -
JAMES GASKET 5 Speed Shifter Shaft Seal 12045-DL
JAMES GASKET
$18.50JAMES GASKET 5 Speed Shifter Shaft SealDS174376- SKU:
- DS174376
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- APPLICATION:
- SHIFTER SHAFT
- UNITS:
- 5 PACK
- PRODUCT NAME:
- SEAL
- RIDING STYLE:
- STREET
$18.50 -
JAMES GASKET Shifter Shaft Cover Seal 12010
JAMES GASKET
$18.80JAMES GASKET Shifter Shaft Cover SealDS174375- SKU:
- DS174375
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- APPLICATION:
- SHIFTER SHAFT
- APPLICATION:
- TRANSMISSION
- PRODUCT NAME:
- SEAL
- UNITS:
- 5 PACK
- RIDING STYLE:
- STREET
$18.80 -
JAMES GASKET Shifter O-Ring - FXST 11191
JAMES GASKET
$5.40JAMES GASKET Shifter O-Ring - FXSTDS174374- SKU:
- DS174374
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- PRODUCT NAME:
- O-RING
- UNITS:
- 25 PACK
- MATERIAL:
- RUBBER
- RIDING STYLE:
- STREET
- TYPE:
- OIL
- APPLICATION:
- GEAR SHIFT LEVER
$5.40 -
JAMES GASKET Carb to Main Seal 27002-89
JAMES GASKET
$11.95Carburetor-to-Intake Manifold Seal for Harley Davidson modelsDS174373- SKU:
- DS174373
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- APPLICATION:
- CARBURETOR
- APPLICATION:
- INTAKE MANIFOLD
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- PRODUCT NAME:
- SEAL
$11.95
