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 Shifter Shaft Seal 12045-M
JAMES GASKET
$18.50JAMES GASKET Shifter Shaft SealDS173423- SKU:
- DS173423
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- APPLICATION:
- SHIFTER SHAFT
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- SEAL
- UNITS:
- 5 PACK
$18.50 -
JAMES GASKET Trans Gasket Kit - 4 Speed 33031-70
JAMES GASKET
$53.95Made in the U.S.A.DS173418- SKU:
- DS173418
- Availability:
- Ships Same Business Day
- Weight:
- 0.44 LBS
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- STREET
- STYLE:
- 4-SPEED
- TYPE:
- TRANSMISSION
- UNITS:
- KIT
$53.95 -
JAMES GASKET Oil Pump Rebuild Kit - FL 48-FL
JAMES GASKET
$16.95Comes with new components that allow you to totally rebuild/rebush most oil pumps, Made in the U.S.A.DS173410- SKU:
- DS173410
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- PRODUCT NAME:
- GASKET KIT
- UNITS:
- KIT
- RIDING STYLE:
- STREET
- TYPE:
- OIL PUMP
$16.95 -
JAMES GASKET Mylar Gasket/Seal Kit 68-FL
JAMES GASKET
$16.95Comes with new components that allow you to totally rebuild/rebush most oil pumps, Made in the U.S.A.DS173409- SKU:
- DS173409
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- UNITS:
- KIT
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- GASKET KIT
- TYPE:
- OIL PUMP
$16.95 -
JAMES GASKET Paper Gasket/Seal Kit 81-FLH
JAMES GASKET
$16.95Comes with new components that allow you to totally rebuild/rebush most oil pumps, Made in the U.S.A.DS173408- SKU:
- DS173408
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- PRODUCT NAME:
- GASKET KIT
- TYPE:
- OIL PUMP
- UNITS:
- KIT
- RIDING STYLE:
- STREET
$16.95 -
JAMES GASKET Gasket/Seal Kit - XL 54-XL
JAMES GASKET
$16.95Comes with new components that allow you to totally rebuild/rebush most oil pumps, Made in the U.S.A.DS173407- SKU:
- DS173407
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET KIT
- TYPE:
- OIL PUMP
- RIDING STYLE:
- STREET
$16.95 -
JAMES GASKET Gasket/Seal Kit - XL 77-XL
JAMES GASKET
$16.95Comes with new components that allow you to totally rebuild/rebush most oil pumps, Made in the U.S.A.DS173406- SKU:
- DS173406
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- PRODUCT NAME:
- GASKET KIT
- TYPE:
- OIL PUMP REPAIR
- UNITS:
- KIT
- RIDING STYLE:
- STREET
$16.95 -
JAMES GASKET Top End Gasket Kit - Panhead 17034-48
JAMES GASKET
$44.95Top-quality gaskets, oil seals and O-rings necessary to rebuild an engine, Made in the U.S.A.DS173405- SKU:
- DS173405
- Availability:
- Ships Same Business Day
- Weight:
- 0.31 LBS
- THICKNESS IMPERIAL:
- 0,030'
- THICKNESS METRIC:
- 0.80 MM
- TYPE:
- TOP END
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- STREET
$44.95 -
JAMES GASKET Oil Pump Ball Bearing 8866
JAMES GASKET
$6.00Replacement oil pump check valve ballDS173404- SKU:
- DS173404
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- RIDING STYLE:
- STREET
- TYPE:
- CHECK VALVE
- PRODUCT NAME:
- BALL
- TYPE:
- OIL PUMP
- UNITS:
- 10 PACK
$6.00 -
EASTERN MOTORCYCLE PARTS Oil Pump Retainer Clip - Big Twin A-11002
EASTERN MOTORCYCLE PARTS
$5.30EASTERN MOTORCYCLE PARTS Oil Pump Retainer Clip - Big TwinDS173403- SKU:
- DS173403
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- RETAINER RING
- TYPE:
- OIL PUMP
- UNITS:
- 10 PACK
$5.30 -
JAMES GASKET Tail Lamp Lens Gasket 68122-55
JAMES GASKET
$24.30Top-quality replacement gasketsDS173395- SKU:
- DS173395
- Availability:
- Ships Same Business Day
- Weight:
- 0.44 LBS
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- STREET
- TYPE:
- TAIL LAMP LENS
- UNITS:
- 10 PACK
- PRODUCT NAME:
- GASKET
$24.30 -
JAMES GASKET Primary Cover Gasket 60540-65
JAMES GASKET
$69.40Top quality gaskets, seals and o-rings meet or exceed OEM specifications, Primary gasket features silicone beading, Made in the U.S.A.DS173394- SKU:
- DS173394
- Availability:
- Ships Same Business Day
- Weight:
- 0.38 LBS
- THICKNESS IMPERIAL:
- 0,032'
- MATERIAL:
- PAPER
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- GASKET
- THICKNESS METRIC:
- 0.81 MM
- UNITS:
- 10 PACK
- TYPE:
- PRIMARY COVER
$69.40 -
JAMES GASKET Generator Mounting Gasket - FL/XL 30143-30
JAMES GASKET
$6.00Flexible paper gasket product line utilized the latest in gasket paper technology called MicroPore., These gaskets exhibit exceptional fluid resistance and sealability in a wide range of applications and flange conditions., With a reduced pore size, this...DS173386- SKU:
- DS173386
- Availability:
- Ships Same Business Day
- Weight:
- 0.31 LBS
- PRODUCT NAME:
- GASKET
- UNITS:
- 10 PACK
- MATERIAL:
- PAPER
- MOUNTING POSITION:
- GENERATOR TO CASE
- RIDING STYLE:
- STREET
- TYPE:
- GENERATOR MOUNT
$6.00 -
JAMES GASKET Upper Pushrod Seal 17955-36-A
JAMES GASKET
$65.80Made in the U.S.A.DS173383- SKU:
- DS173383
- Availability:
- Ships Same Business Day
- Weight:
- 0.31 LBS
- RIDING STYLE:
- STREET
- UNITS:
- 100 PACK
- APPLICATION:
- PUSHROD COVER
- PRODUCT NAME:
- SEAL
$65.80 -
JAMES GASKET Front Tappet Block Gasket - Big Twin 18634-48-C
JAMES GASKET
$8.60Convenient and efficient way to sell the correct amount of seals or O-rings for a rebuild or cam change, James complete kits are neatly packaged for easy display, Made in the U.S.A.DS173377- SKU:
- DS173377
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- MOUNTING POSITION:
- FRONT
- THICKNESS METRIC:
- 0.51 MM
- PRODUCT NAME:
- GASKET
- TYPE:
- TAPPET BLOCK
- MATERIAL:
- PAPER
- THICKNESS:
- 0,51 MM (0,020')
- RIDING STYLE:
- STREET
- THICKNESS IMPERIAL:
- 0,020'
- UNITS:
- 10 PACK
$8.60 -
JAMES GASKET Rear Tappet Block Gasket - Big Twin 18633-48-D
JAMES GASKET
$8.60Convenient and efficient way to sell the correct amount of seals or O-rings for a rebuild or cam change, James complete kits are neatly packaged for easy display, Made in the U.S.A.DS173376- SKU:
- DS173376
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- PRODUCT NAME:
- GASKET
- UNITS:
- 10 PACK
- THICKNESS:
- 0,51 MM (0,020')
- MOUNTING POSITION:
- REAR
- THICKNESS IMPERIAL:
- 0,020'
- THICKNESS METRIC:
- 0.51 MM
- TYPE:
- TAPPET BLOCK
- MATERIAL:
- PAPER
- RIDING STYLE:
- STREET
$8.60 -
JAMES GASKET Paper Gasket/Seal Kit 92-FLH
JAMES GASKET
$16.95Comes with new components that allow you to totally rebuild/rebush most oil pumps, Made in the U.S.A.DS173375- SKU:
- DS173375
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET KIT
- TYPE:
- OIL PUMP
- RIDING STYLE:
- STREET
$16.95 -
JAMES GASKET Mylar Gasket/Seal Kit 81-FL
JAMES GASKET
$16.95Comes with new components that allow you to totally rebuild/rebush most oil pumps, Made in the U.S.A.DS173374- SKU:
- DS173374
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET KIT
- TYPE:
- OIL PUMP
- RIDING STYLE:
- STREET
$16.95 -
JAMES GASKET Paper Gasket/Seal Kit 79-FLH
JAMES GASKET
$16.95Comes with new components that allow you to totally rebuild/rebush most oil pumps, Made in the U.S.A.DS173373- SKU:
- DS173373
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- GASKET KIT
- TYPE:
- OIL PUMP
- UNITS:
- KIT
$16.95 -
JAMES GASKET Trans Gasket/Seal Kit - FL 33031-93
JAMES GASKET
$52.95Made in the U.S.A.DS173372- SKU:
- DS173372
- Availability:
- Ships Same Business Day
- Weight:
- 0.70 LBS
- STYLE:
- 5-SPEED
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- STREET
- TYPE:
- TRANSMISSION
$52.95
