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 End Cover Gasket - 5 Speed 36801-87-A
JAMES GASKET
$14.30Made in the U.S.A.DS174372- SKU:
- DS174372
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- RIDING STYLE:
- STREET
- TYPE:
- CLUTCH RELEASE
- PRODUCT NAME:
- GASKET
- UNITS:
- 10 PACK
$14.30 -
JAMES GASKET Float Bowl O-Ring 27577-88
JAMES GASKET
$16.40Made in the U.S.A.DS174371- SKU:
- DS174371
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- APPLICATION:
- CARBURETOR
- APPLICATION:
- FLOAT BOWL
- RIDING STYLE:
- STREET
- TYPE:
- OIL
- MATERIAL:
- VITON
- PRODUCT NAME:
- O-RING
- UNITS:
- 5 PACK
$16.40 -
JAMES GASKET Front Tappet Block Gasket - Big Twin 18634-48-A/B
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.DS174370- SKU:
- DS174370
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- TYPE:
- TAPPET BLOCK
- PRODUCT NAME:
- GASKET
- MOUNTING POSITION:
- FRONT
- THICKNESS:
- 0,79 MM (0,031')
- THICKNESS IMPERIAL:
- 0,031'
- UNITS:
- 10 PACK
- MATERIAL:
- PAPER
- RIDING STYLE:
- STREET
- THICKNESS METRIC:
- 0.79 MM
$8.60 -
JAMES GASKET Clutch Cable O-Ring 11179
JAMES GASKET
$10.30Made in the U.S.A.DS174369- SKU:
- DS174369
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- APPLICATION:
- CLUTCH CABLE
- APPLICATION:
- TRANSMISSION
- RIDING STYLE:
- STREET
- TYPE:
- OIL
- UNITS:
- 25 PACK
- PRODUCT NAME:
- O-RING
$10.30 -
JAMES GASKET Intake Seal - Big Twin/XL 26995-86-A
JAMES GASKET
$22.80JAMES GASKET Intake Seal - Big Twin/XLDS174368- SKU:
- DS174368
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- PRODUCT NAME:
- SEAL
- UNITS:
- 10 PACK
- RIDING STYLE:
- STREET
- APPLICATION:
- INTAKE MANIFOLD
$22.80 -
JAMES GASKET Cam Cover Gasket - XL 25263-86
JAMES GASKET
$29.10Replacement gaskets for cam chestsDS174367- SKU:
- DS174367
- Availability:
- Ships Same Business Day
- Weight:
- 0.19 LBS
- DISPLACEMENT:
- 1200 CC
- RIDING STYLE:
- STREET
- THICKNESS METRIC:
- 0.79 MM
- THICKNESS:
- 0,79 MM (0,031')
- THICKNESS IMPERIAL:
- 0,031'
- MATERIAL:
- PAPER
- PRODUCT NAME:
- GASKET
- TYPE:
- CAM COVER
- UNITS:
- 10 PACK
- DISPLACEMENT:
- 1100 CC
- DISPLACEMENT:
- 883 CC
$29.10 -
JAMES GASKET Shifter Shaft Seal - XL 37101-84
JAMES GASKET
$5.95JAMES GASKET Shifter Shaft Seal - XLDS174366- SKU:
- DS174366
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- SEAL
- UNITS:
- EACH
- APPLICATION:
- CLUTCH RELEASE LEVER
- APPLICATION:
- SHIFTER SHAFT
$5.95 -
JAMES GASKET Foot Peg Stud Gasket - XL 34624-77
JAMES GASKET
$6.30Flexible 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...DS174365- SKU:
- DS174365
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- THICKNESS:
- 0,76 MM (0,030')
- THICKNESS IMPERIAL:
- 0,030'
- PRODUCT NAME:
- GASKET
- TYPE:
- SHIFTER STUD BOSS
- UNITS:
- 10 PACK
- MATERIAL:
- PAPER
- RIDING STYLE:
- STREET
- THICKNESS METRIC:
- 0.76 MM
$6.30 -
JAMES GASKET Primary Filler Plug O-Ring - XL 11139
JAMES GASKET
$10.40Made in the U.S.A.DS174364- SKU:
- DS174364
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- APPLICATION:
- INSPECTION COVER
- MATERIAL:
- RUBBER
- APPLICATION:
- FILLER
- UNITS:
- 25 PACK
- PRODUCT NAME:
- O-RING
- RIDING STYLE:
- STREET
- TYPE:
- OIL
$10.40 -
JAMES GASKET Tappet Guide Lower O-Ring - XL 11168-A
JAMES GASKET
$19.40Made in the U.S.A.DS174363- SKU:
- DS174363
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- APPLICATION:
- TAPPET GUIDE
- RIDING STYLE:
- STREET
- TYPE:
- OIL
- PRODUCT NAME:
- O-RING
- UNITS:
- 25 PACK
$19.40 -
JAMES GASKET Tappet Guide Upper O-Ring - XL 11167-A
JAMES GASKET
$19.30Made in the U.S.A.DS174362- SKU:
- DS174362
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- APPLICATION:
- TAPPET GUIDE
- RIDING STYLE:
- STREET
- TYPE:
- OIL
- PRODUCT NAME:
- O-RING
- UNITS:
- 25 PACK
$19.30 -
JAMES GASKET Tappet Guide O-Ring - XL 11110
JAMES GASKET
$7.50Made in the U.S.A.DS174361- SKU:
- DS174361
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- PRODUCT NAME:
- O-RING
- APPLICATION:
- LOWER TAPPET BLOCK
- UNITS:
- 25 PACK
- RIDING STYLE:
- STREET
- TYPE:
- OIL
$7.50 -
JAMES GASKET Rear Tappet Block Gasket - Big Twin 18633-48-A/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.DS174360- SKU:
- DS174360
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- PRODUCT NAME:
- GASKET
- TYPE:
- TAPPET BLOCK
- MATERIAL:
- PAPER
- RIDING STYLE:
- STREET
- THICKNESS METRIC:
- 0.79 MM
- THICKNESS:
- 0,79 MM (0,031')
- MOUNTING POSITION:
- REAR
- THICKNESS IMPERIAL:
- 0,031'
- UNITS:
- 10 PACK
$8.60 -
JAMES GASKET Lower Rocker Cover - XL 17353-86-A
JAMES GASKET
$44.90Made 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...DS174359- SKU:
- DS174359
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- RIDING STYLE:
- STREET
- TYPE:
- ROCKER BOX
- UNITS:
- 5 PACK
- MOUNTING POSITION:
- LOWER
- PRODUCT NAME:
- GASKET
- MATERIAL:
- RUBBER
$44.90 -
JAMES GASKET Head Gasket - XL1100 16665-86
JAMES GASKET
$51.00Made in the U.S.A.DS174357- SKU:
- DS174357
- Availability:
- Ships Same Business Day
- Weight:
- 0.38 LBS
- MATERIAL:
- -
- PRODUCT NAME:
- GASKET
- UNITS:
- 5 PACK
- BORE SIZE:
- -
- BORE SIZE IMPERIAL:
- -
- RIDING STYLE:
- STREET
- THICKNESS IMPERIAL:
- 0,062'
- THICKNESS METRIC:
- 1.60 MM
- TYPE:
- CYLINDER HEAD
$51.00 -
JAMES GASKET Muffler Junction Gasket - Big Twin 65721-85
JAMES GASKET
$14.60Made in the U.S.A.DS174354- SKU:
- DS174354
- Availability:
- Ships Same Business Day
- Weight:
- 0.08 LBS
- RIDING STYLE:
- STREET
- UNITS:
- 10 PACK
- MATERIAL:
- COPPER
- PRODUCT NAME:
- GASKET
- TYPE:
- MUFFLER CLAMP
$14.60 -
JAMES GASKET Primary Cover Gasket - Silicon 60538-81-C
JAMES GASKET
$91.60Top quality gaskets, seals and o-rings meet or exceed OEM specifications, Primary gasket features silicone beading, Made in the U.S.A.DS174352- SKU:
- DS174352
- Availability:
- Ships Same Business Day
- Weight:
- 0.60 LBS
- MATERIAL:
- PAPER
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- GASKET
- TYPE:
- COVER
- STYLE:
- PRIMARY
- THICKNESS METRIC:
- 1.60 MM
- UNITS:
- 5 PACK
- FEATURES:
- BEADED
- MATERIAL:
- SILICONE
- THICKNESS IMPERIAL:
- 0,062'
$91.60 -
JAMES GASKET Shifter Shaft Sleeve O-Ring - Big Twin 11117
JAMES GASKET
$19.30Made in the U.S.A.DS174351- SKU:
- DS174351
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- APPLICATION:
- GEAR SHIFT LEVER
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- O-RING
- TYPE:
- OIL
- UNITS:
- 25 PACK
$19.30 -
JAMES GASKET Primary Inspection Gasket 34906-85
JAMES GASKET
$25.40Latest 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,...DS174350- SKU:
- DS174350
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- TYPE:
- INSPECTION COVER
- FEATURES:
- BEADED
- RIDING STYLE:
- STREET
- STYLE:
- PRIMARY
- THICKNESS IMPERIAL:
- 0,062'
- THICKNESS METRIC:
- 1.60 MM
- MATERIAL:
- SILICONE
- MATERIAL:
- PAPER
- PRODUCT NAME:
- GASKET
- THICKNESS:
- 1,60 MM (0,062')
- UNITS:
- 5 PACK
$25.40 -
JAMES GASKET Primary Transmission Small Gasket 34903-79
JAMES GASKET
$17.60Flexible 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...DS174349- SKU:
- DS174349
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- THICKNESS IMPERIAL:
- 0,030'
- THICKNESS METRIC:
- 0.80 MM
- UNITS:
- 10 PACK
- RIDING STYLE:
- STREET
- THICKNESS:
- 0,80 MM (0,030')
- TYPE:
- PRIMARY
- TYPE:
- TRANSMISSION
- STYLE:
- SMALL
- MATERIAL:
- PAPER
- MOUNTING POSITION:
- INNER
- PRODUCT NAME:
- GASKET
$17.60Qty in Cart: 0Quantity:Price:$17.60Subtotal:
