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
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JAMES GASKET Tappet Cover Gasket - Twin Cam 18635-99-F
JAMES GASKET
$14.95Convenient 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.09342108- SKU:
- 09342108
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- MATERIAL:
- FOAMET
- MOUNTING POSITION:
- FRONT
- MOUNTING POSITION:
- REAR
- UNITS:
- SET
- TYPE:
- TAPPET COVER
- FEATURES:
- BEADED
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- STREET
$14.95 -
JAMES GASKET Rocker Cover Gasket - XL 17695-07
JAMES GASKET
$17.26Made 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...09342099- SKU:
- 09342099
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- TYPE:
- ROCKER BOX
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- STREET
- UNITS:
- 10 PACK
- MOUNTING POSITION:
- INNER
$17.26 -
JAMES GASKET Outer Rocker Cover Gasket - XL 17362-07
JAMES GASKET
$37.20Made 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...09342098- SKU:
- 09342098
- Availability:
- Ships Same Business Day
- Weight:
- 0.16 LBS
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- STREET
- UNITS:
- 5 PACK
- MOUNTING POSITION:
- OUTER
- TYPE:
- ROCKER BOX
$37.20 -
JAMES GASKET Rocker Cover Gasket - XL 17030-07-X
JAMES GASKET
$91.95Made in the U.S.A.09342097- SKU:
- 09342097
- Availability:
- Ships Same Business Day
- Weight:
- 0.33 LBS
- RIDING STYLE:
- STREET
- UNITS:
- KIT
- TYPE:
- ROCKER BOX
- PRODUCT NAME:
- GASKET KIT
$91.95 -
JAMES GASKET Motor Gasket Kit - XL 17047-07-X
JAMES GASKET
$218.95To-quality gaskets, oil seals, and o-rings necessary to rebuild an engine, Made in the U.S.A.09342096- SKU:
- 09342096
- Availability:
- Ships Same Business Day
- Weight:
- 1.46 LBS
- PRODUCT NAME:
- GASKET KIT
- TYPE:
- COMPLETE
- UNITS:
- KIT
- RIDING STYLE:
- STREET
$218.95 -
JAMES GASKET Top End Gasket Kit - XL 17049-07-X
JAMES GASKET
$131.95Top-quality gaskets, oil seals and O-rings necessary to rebuild an engine, Made in the U.S.A.09342095- SKU:
- 09342095
- Availability:
- Ships Same Business Day
- Weight:
- 0.86 LBS
- RIDING STYLE:
- STREET
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET KIT
- TYPE:
- TOP END
$131.95 -
On Sale
COMETIC Carb Back Plate Gasket C9492
COMETIC
Now: $18.00Was: $19.40Aluminum Foamette Material gaskets feature an aluminum core and a chemically blown, compounded nitrile synthetic rubber coating that is bonded to the outside layer; do not require gasket sealer., Made in the U.S.A.09342061- SKU:
- 09342061
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- UNITS:
- 10 PACK
- THICKNESS METRIC:
- 1.52 MM
- TYPE:
- THROTTLE HOUSING
- MATERIAL:
- AFM (ALUMINUM FOAM MATERIAL)
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- STREET
- THICKNESS:
- 1,52 MM (0,060')
- THICKNESS IMPERIAL:
- 0.060'
Now: $18.00Was: $19.40 -
On Sale
COMETIC Primary to Transmission Gasket - .031" C9339
COMETIC
Now: $52.00Was: $55.30COMETIC Primary to Transmission Gasket - .031"09341653- SKU:
- 09341653
- Availability:
- Ships Same Business Day
- Weight:
- 0.26 LBS
- PRODUCT NAME:
- GASKET
- THICKNESS:
- 0,79 MM (0,031')
- UNITS:
- 10 PACK
- RIDING STYLE:
- STREET
- THICKNESS METRIC:
- 0.79 MM
- TYPE:
- CHAIN COVER
- TYPE:
- TRANSMISSION
- MATERIAL:
- FIBER
- THICKNESS IMPERIAL:
- 0,031'
Now: $52.00Was: $55.30Qty in Cart: 0Quantity:Price:Now: $52.00Was: $55.30Subtotal: -
On Sale
COMETIC Oil Pump Body Gasket C9383-010
COMETIC
Now: $12.00Was: $12.70Made in the U.S.A.09341651- SKU:
- 09341651
- Availability:
- Ships Same Business Day
- Weight:
- 0.21 LBS
- THICKNESS IMPERIAL:
- 0,010'
- MATERIAL:
- RUBBER
- MATERIAL:
- STEEL
- RIDING STYLE:
- STREET
- THICKNESS:
- 0,25 MM (0,010')
- THICKNESS METRIC:
- 0.25 MM
- TYPE:
- OIL PUMP BODY
- UNITS:
- 10 PACK
- PRODUCT NAME:
- GASKET
Now: $12.00Was: $12.70 -
On Sale
COMETIC Oil Pump Body Gasket C9381-010
COMETIC
Now: $12.00Was: $12.70Made in the U.S.A.09341650- SKU:
- 09341650
- Availability:
- Ships Same Business Day
- Weight:
- 0.21 LBS
- MATERIAL:
- STEEL
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- STREET
- THICKNESS:
- 0,25 MM (0,010')
- THICKNESS IMPERIAL:
- 0,010'
- TYPE:
- OIL PUMP BODY
- UNITS:
- 10 PACK
- MATERIAL:
- RUBBER
- THICKNESS METRIC:
- 0.25 MM
Now: $12.00Was: $12.70 -
On Sale
COMETIC Cam Cover Gasket - .031" C9302
COMETIC
Now: $14.00Was: $14.90COMETIC Cam Cover Gasket - .031"09341649- SKU:
- 09341649
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- RIDING STYLE:
- STREET
- THICKNESS METRIC:
- 0.79 MM
- MATERIAL:
- AFM (ALUMINUM FOAM MATERIAL)
- PRODUCT NAME:
- GASKET
- TYPE:
- CAM COVER
- THICKNESS:
- 0,79 MM (0,031')
- THICKNESS IMPERIAL:
- 0,031'
- UNITS:
- 5 PACK
Now: $14.00Was: $14.90 -
On Sale
COMETIC Cam Cover Gasket - .032" C9302F5-032
COMETIC
Now: $22.00Was: $23.50COMETIC Cam Cover Gasket - .032"09341648- SKU:
- 09341648
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- MATERIAL:
- AFM (ALUMINUM FOAM MATERIAL)
- RIDING STYLE:
- STREET
- THICKNESS IMPERIAL:
- 0,032'
- UNITS:
- 5 PACK
- PRODUCT NAME:
- GASKET
- THICKNESS:
- 0,81 MM (0,032')
- THICKNESS METRIC:
- 0.81 MM
- TYPE:
- CAM COVER
Now: $22.00Was: $23.50 -
On Sale
COMETIC Cam Cover Gasket - .031" C9328
COMETIC
Now: $17.00Was: $18.10COMETIC Cam Cover Gasket - .031"09341647- SKU:
- 09341647
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- MATERIAL:
- AFM (ALUMINUM FOAM MATERIAL)
- THICKNESS:
- 0,79 MM (0,031')
- THICKNESS METRIC:
- 0.79 MM
- PRODUCT NAME:
- GASKET
- UNITS:
- 10 PACK
- RIDING STYLE:
- STREET
- THICKNESS IMPERIAL:
- 0,031'
- TYPE:
- CAM COVER
Now: $17.00Was: $18.10 -
On Sale
COMETIC Rear Tappet Block Gasket C9297
COMETIC
Now: $5.00Was: $5.30Made in the U.S.A.09341644- SKU:
- 09341644
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- MATERIAL:
- FIBER
- MOUNTING POSITION:
- REAR
- THICKNESS IMPERIAL:
- 0,020'
- THICKNESS METRIC:
- 0.51 MM
- UNITS:
- 10 PACK
- PRODUCT NAME:
- GASKET
- TYPE:
- TAPPET BLOCK
- RIDING STYLE:
- STREET
- THICKNESS:
- 0,51 MM (0,020')
Now: $5.00Was: $5.30 -
JAMES GASKET Oil Pump Gasket Kit - XL 04-XL
JAMES GASKET
$21.95Comes with new components that allow you to totally rebuild/rebush most oil pumps, Made in the U.S.A.09341637- SKU:
- 09341637
- Availability:
- Ships Same Business Day
- Weight:
- 0.08 LBS
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET KIT
- TYPE:
- OIL PUMP
- RIDING STYLE:
- STREET
$21.95 -
JAMES GASKET Tail Lamp Gasket Kit 68123-55-K
JAMES GASKET
$11.95Top-quality replacement gaskets09341636- SKU:
- 09341636
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- PRODUCT NAME:
- GASKET KIT
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- STREET
- TYPE:
- TAIL LAMP MOUNTING
- UNITS:
- KIT
$11.95 -
On Sale
COMETIC Bearing Housing Gasket C9264F
COMETIC
Now: $23.00Was: $24.90Aluminum Foamette Material gaskets feature an aluminum core and a chemically blown, compounded nitrile synthetic rubber coating that is bonded to the outside layer; do not require gasket sealer.09341383- SKU:
- 09341383
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- PRODUCT NAME:
- GASKET
- THICKNESS:
- 0,81 MM (0,032')
- THICKNESS IMPERIAL:
- 0,032'
- TYPE:
- BEARING HOUSING
- UNITS:
- 10 PACK
- MATERIAL:
- AFM (ALUMINUM FOAM MATERIAL)
- RIDING STYLE:
- STREET
- THICKNESS METRIC:
- 0.81 MM
Now: $23.00Was: $24.90Qty in Cart: 0Quantity:Price:Now: $23.00Was: $24.90Subtotal: -
On Sale
COMETIC Thin Cover Gasket C9983F
COMETIC
Now: $18.00Was: $18.90Aluminum Foamette Material gaskets feature an aluminum core and a chemically blown, compounded nitrile synthetic rubber coating that is bonded to the outside layer; do not require gasket sealer. Made in the U.S.A.09341381- SKU:
- 09341381
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- THICKNESS:
- 0,81 MM (0,032')
- THICKNESS IMPERIAL:
- 0,032'
- THICKNESS METRIC:
- 0.81 MM
- TYPE:
- TRANSMISSION TOP COVER
- RIDING STYLE:
- STREET
- UNITS:
- 10 PACK
- MATERIAL:
- AFM (ALUMINUM FOAM MATERIAL)
- PRODUCT NAME:
- GASKET
Now: $18.00Was: $18.90 -
On Sale
COMETIC Top Cover Gasket C9516-032AFM
COMETIC
Now: $5.00Was: $5.30Top end gasket kits include correct base, head gasket and cylinder O-rings as well as other top end specific O-rings or seals needed for R&R of top end, MLS head gaskets promote an even torque load across the gasket sealing surface, providing less bore...09341379- SKU:
- 09341379
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- UNITS:
- 10 PACK
- PRODUCT NAME:
- GASKET
- THICKNESS IMPERIAL:
- 0,032'
- TYPE:
- TRANSMISSION TOP COVER
- RIDING STYLE:
- STREET
- THICKNESS METRIC:
- 0.81 MM
Now: $5.00Was: $5.30 -
On Sale
COMETIC Shift Adapter Gasket C9521F
COMETIC
Now: $5.00Was: $5.30Aluminum Foamette Material gaskets feature an aluminum core and a chemically blown, compounded nitrile synthetic rubber coating that is bonded to the outside layer; do not require gasket sealer., Made in the U.S.A.09341377- SKU:
- 09341377
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- TYPE:
- SHIFTER ADAPTER PLATE
- PRODUCT NAME:
- GASKET
- THICKNESS:
- 0,81 MM (0,032')
- THICKNESS IMPERIAL:
- 0,032'
- THICKNESS METRIC:
- 0.81 MM
- MATERIAL:
- ALUMINUM
- RIDING STYLE:
- STREET
- UNITS:
- 10 PACK
Now: $5.00Was: $5.30Qty in Cart: 0Quantity:Price:Now: $5.00Was: $5.30Subtotal:
