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 Cylinder Base Gasket C9206
COMETIC
$33.55COMETIC Cylinder Base Gasket C9206Cylinder base gasket for Sportster models09344664- SKU:
- 09344664
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- BORE SIZE IMPERIAL:
- 3.500'
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- STREET
- UNITS:
- PAIR
- MATERIAL:
- VITON
- TYPE:
- CYLINDER BASE
- THICKNESS:
- 0,51 MM (0,020')
- THICKNESS IMPERIAL:
- 0,020'
- THICKNESS METRIC:
- 0.51 MM
$33.55 -
COMETIC Cylinder Base Gasket C9207
COMETIC
$33.55COMETIC Cylinder Base Gasket C9207Cylinder base gasket for Sportster models09344665- SKU:
- 09344665
- Availability:
- Ships Same Business Day
- Weight:
- 0.01 LBS
- MATERIAL:
- VITON
- RIDING STYLE:
- STREET
- BORE SIZE IMPERIAL:
- 3.625'
- THICKNESS IMPERIAL:
- 0,020'
- PRODUCT NAME:
- GASKET
- TYPE:
- CYLINDER BASE
- UNITS:
- PAIR
- THICKNESS:
- 0,51 MM (0,020')
- THICKNESS METRIC:
- 0.51 MM
$33.55 -
COMETIC Timing Cover Gasket C9306
COMETIC
$8.90COMETIC Timing Cover Gasket C9306Made in the U.S.A.09344666- SKU:
- 09344666
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- THICKNESS IMPERIAL:
- 0,031'
- TYPE:
- POINT COVER
- UNITS:
- 10 PACK
- THICKNESS METRIC:
- 0.79 MM
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- STREET
- THICKNESS:
- 0,79 MM (0,031')
- MATERIAL:
- FIBER
- TYPE:
- IGNITION COVER
$8.90 -
COMETIC Starter Motor Gasket C9312
COMETIC
$6.10COMETIC Starter Motor Gasket C9312Made in the U.S.A.09344667- SKU:
- 09344667
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- THICKNESS:
- 0,51 MM (0,020')
- TYPE:
- MOTOR
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- STREET
- UNITS:
- 10 PACK
- MATERIAL:
- FIBER
- TYPE:
- STATOR
- THICKNESS IMPERIAL:
- 0,020'
- THICKNESS METRIC:
- 0.51 MM
$6.10 -
COMETIC Cam Gear Gasket - XL C9316F1
COMETIC
$18.85COMETIC Cam Gear Gasket XL C9316F1COMETIC Cam Gear Gasket - XL09344668- SKU:
- 09344668
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- MATERIAL:
- AFM (ALUMINUM FOAM MATERIAL)
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- STREET
- THICKNESS IMPERIAL:
- 0.060'
- THICKNESS METRIC:
- 1.52 MM
- THICKNESS:
- 1,52 MM (0,060')
- TYPE:
- CAM COVER
- UNITS:
- EACH
$18.85 -
COMETIC Rocker Cover Gasket - Big Twin C9336-2
COMETIC
$6.95COMETIC Rocker Cover Gasket Big Twin C9336-2Viton gaskets feature a stainless steel core with a .001"-thick coating of Viton rubber on both sides., Made in the U.S.A.09344684- SKU:
- 09344684
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- PRODUCT NAME:
- GASKET
- TYPE:
- ROCKER COVER BASE
- UNITS:
- PAIR
- RIDING STYLE:
- STREET
- THICKNESS METRIC:
- 0.79 MM
- THICKNESS IMPERIAL:
- 0,031'
- MATERIAL:
- FIBER
- THICKNESS:
- 0,79 MM (0,031')
$6.95Qty in Cart: 0Quantity:Price:$6.95Subtotal: -
COMETIC Circuit Breaker Gasket C9337
COMETIC
$4.20COMETIC Circuit Breaker Gasket C9337Aluminum 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.09344685- SKU:
- 09344685
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- THICKNESS IMPERIAL:
- 0,032'
- UNITS:
- 10 PACK
- MATERIAL:
- AFM (ALUMINUM FOAM MATERIAL)
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- STREET
- THICKNESS:
- 0,81 MM (0,032')
- THICKNESS METRIC:
- 0.81 MM
- TYPE:
- CIRCUIT BREAKER COVER
$4.20 -
COMETIC Rocker Cover Gasket - Big Twin C9342-125F
COMETIC
$81.85COMETIC Rocker Cover Gasket Big Twin C9342-125FViton gaskets feature a stainless steel core with a .001"-thick coating of Viton rubber on both sides., Made in the U.S.A.09344686- SKU:
- 09344686
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- THICKNESS:
- 3,20 MM (0,125')
- TYPE:
- ROCKER ARM
- UNITS:
- PAIR
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- STREET
- THICKNESS IMPERIAL:
- 0,125'
- MATERIAL:
- FIBER
- THICKNESS METRIC:
- 3.20 MM
$81.85 -
COMETIC Rocker Cover Gasket - Big Twin C9346
COMETIC
$17.90COMETIC Rocker Cover Gasket Big Twin C9346Viton gaskets feature a stainless steel core with a .001"-thick coating of Viton rubber on both sides., Made in the U.S.A.09344687- SKU:
- 09344687
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- MATERIAL:
- FELT
- THICKNESS:
- 3,20 MM (0,125')
- TYPE:
- ROCKER COVER
- THICKNESS METRIC:
- 3.20 MM
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- STREET
- THICKNESS IMPERIAL:
- 0,125'
- UNITS:
- 10 PACK
$17.90 -
COMETIC Oil Pump Cover Gasket C9385
COMETIC
$9.50COMETIC Oil Pump Cover Gasket C9385COMETIC Oil Pump Cover Gasket09344688- SKU:
- 09344688
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- MOUNTING POSITION:
- OUTER
- PRODUCT NAME:
- GASKET
- TYPE:
- OIL PUMP
- UNITS:
- 10 PACK
- MATERIAL:
- FIBER
- RIDING STYLE:
- STREET
- THICKNESS:
- 0,25 MM (0,010')
- THICKNESS METRIC:
- 0.25 MM
- THICKNESS IMPERIAL:
- 0,010'
$9.50 -
COMETIC Oil Pump Cover Gasket C9388
COMETIC
$10.60COMETIC Oil Pump Cover Gasket C9388COMETIC Oil Pump Cover Gasket09344690- SKU:
- 09344690
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- MOUNTING POSITION:
- INNER
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- STREET
- MATERIAL:
- FIBER
- THICKNESS METRIC:
- 0.25 MM
- THICKNESS IMPERIAL:
- 0,010'
- TYPE:
- OIL PUMP
- UNITS:
- 10 PACK
- THICKNESS:
- 0,25 MM (0,010')
$10.60 -
COMETIC Oil Pump Cover Gasket C9389
COMETIC
$9.50COMETIC Oil Pump Cover Gasket C9389COMETIC Oil Pump Cover Gasket09344691- SKU:
- 09344691
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- STREET
- THICKNESS:
- 0,25 MM (0,010')
- THICKNESS IMPERIAL:
- 0,010'
- TYPE:
- OIL PUMP
- UNITS:
- 10 PACK
- MATERIAL:
- FIBER
- MOUNTING POSITION:
- OUTER
- THICKNESS METRIC:
- 0.25 MM
$9.50 -
COMETIC Oil Pump Cover Gasket C9390
COMETIC
$7.40COMETIC Oil Pump Cover Gasket C9390COMETIC Oil Pump Cover Gasket09344692- SKU:
- 09344692
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- THICKNESS IMPERIAL:
- 0,010'
- MATERIAL:
- FIBER
- THICKNESS:
- 0,25 MM (0,010')
- THICKNESS METRIC:
- 0.25 MM
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- STREET
- TYPE:
- OIL PUMP
- UNITS:
- 10 PACK
$7.40 -
COMETIC Oil Pump Cover Gasket C9391
COMETIC
$6.40COMETIC Oil Pump Cover Gasket C9391COMETIC Oil Pump Cover Gasket09344693- SKU:
- 09344693
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- STREET
- THICKNESS:
- 0,25 MM (0,010')
- THICKNESS IMPERIAL:
- 0,010'
- TYPE:
- OIL PUMP
- UNITS:
- 10 PACK
- MATERIAL:
- FIBER
- THICKNESS METRIC:
- 0.25 MM
$6.40 -
COMETIC Oil Pump Cover Gasket C9392
COMETIC
$10.60COMETIC Oil Pump Cover Gasket C9392COMETIC Oil Pump Cover Gasket09344694- SKU:
- 09344694
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- THICKNESS IMPERIAL:
- 0,010'
- MATERIAL:
- FIBER
- THICKNESS:
- 0,25 MM (0,010')
- THICKNESS METRIC:
- 0.25 MM
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- STREET
- TYPE:
- OIL PUMP
- UNITS:
- 10 PACK
$10.60 -
COMETIC Oil Pump Cover Gasket C9393
COMETIC
$6.70COMETIC Oil Pump Cover Gasket C9393COMETIC Oil Pump Cover Gasket09344695- SKU:
- 09344695
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- STREET
- TYPE:
- OIL PUMP
- UNITS:
- 10 PACK
- MATERIAL:
- FIBER
- THICKNESS:
- 0,25 MM (0,010')
- THICKNESS METRIC:
- 0.25 MM
- THICKNESS IMPERIAL:
- 0,010'
$6.70 -
COMETIC Oil Pump Cover Gasket C9394
COMETIC
$6.40COMETIC Oil Pump Cover Gasket C9394COMETIC Oil Pump Cover Gasket09344696- SKU:
- 09344696
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- THICKNESS IMPERIAL:
- 0,010'
- TYPE:
- OIL PUMP
- UNITS:
- 10 PACK
- THICKNESS:
- 0,25 MM (0,010')
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- STREET
- MATERIAL:
- FIBER
- THICKNESS METRIC:
- 0.25 MM
$6.40 -
COMETIC Oil Pump Cover Gasket C9399
COMETIC
$7.40COMETIC Oil Pump Cover Gasket C9399COMETIC Oil Pump Cover Gasket09344698- SKU:
- 09344698
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- THICKNESS IMPERIAL:
- 0,031'
- TYPE:
- OIL PUMP
- UNITS:
- 10 PACK
- THICKNESS METRIC:
- 0.79 MM
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- STREET
- MATERIAL:
- FIBER
- THICKNESS:
- 0,79 MM (0,031')
$7.40 -
COMETIC Pushrod Cover Seals C9408-25
COMETIC
$12.70COMETIC Pushrod Cover Seals C9408-25Contains the correct seals and O-rings needed for a complete rebuild09344700- SKU:
- 09344700
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- GASKET
- UNITS:
- 25 PACK
- TYPE:
- PUSHROD COVER
$12.70 -
COMETIC Pushrod Cover Seals C9409-25
COMETIC
$12.70COMETIC Pushrod Cover Seals C9409-25Contains the correct seals and O-rings needed for a complete rebuild09344701- SKU:
- 09344701
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- UNITS:
- 25 PACK
- RIDING STYLE:
- STREET
- TYPE:
- PUSHROD COVER
- PRODUCT NAME:
- GASKET
$12.70
