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
-
On Sale
COMETIC Push Rod Gasket Kit - XL C10133
COMETIC
MSRP: $19.90Now: $19.00Was: $19.90O-rings are made of a high-temperature Viton® rubber to seal in even the harshest environments, Package includes seals and O-rings for one application, Made in the U.S.A.09345052- SKU:
- 09345052
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- STREET
- TYPE:
- PUSHROD
- UNITS:
- KIT
- MATERIAL:
- VITON
MSRP: $19.90Now: $19.00Was: $19.90 -
On Sale
COMETIC Complete Gasket Kit - 110" C10128-040
COMETIC
MSRP: $169.00Now: $159.00Was: $169.00Every gasket in these kits uses the best materials possible for its intended application, Multi-Layer Steel (MLS) head gaskets, Steel Viton®-coated base gaskets, Blue Viton valve stem seals, Aluminum Foam Material (AFM) race-style exhaust gaskets, Made...09345051- SKU:
- 09345051
- Availability:
- Ships Same Business Day
- Weight:
- 0.90 LBS
- BORE SIZE:
- 4,000'
- MATERIAL:
- AFM (ALUMINUM FOAM MATERIAL)
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- STREET
- TYPE:
- MOTOR
- UNITS:
- KIT
- MATERIAL:
- STEEL
- BORE SIZE IMPERIAL:
- 4.000'
- THICKNESS IMPERIAL:
- 0,040'
- THICKNESS METRIC:
- 1.02 MM
MSRP: $169.00Now: $159.00Was: $169.00 -
On Sale
COMETIC Complete Gasket Kit - 110" C10128
COMETIC
MSRP: $169.00Now: $159.00Was: $169.00Every gasket in these kits uses the best materials possible for its intended application, Multi-Layer Steel (MLS) head gaskets, Steel Viton®-coated base gaskets, Blue Viton valve stem seals, Aluminum Foam Material (AFM) race-style exhaust gaskets, Made...09345050- SKU:
- 09345050
- Availability:
- Ships Same Business Day
- Weight:
- 0.90 LBS
- MATERIAL:
- STEEL
- THICKNESS IMPERIAL:
- 0,030'
- THICKNESS METRIC:
- 0.76 MM
- TYPE:
- MOTOR
- UNITS:
- KIT
- BORE SIZE:
- 4,000'
- MATERIAL:
- AFM (ALUMINUM FOAM MATERIAL)
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- STREET
- BORE SIZE IMPERIAL:
- 4.000'
MSRP: $169.00Now: $159.00Was: $169.00 -
On Sale
COMETIC Base Seal Gasket C10127
COMETIC
MSRP: $10.95Now: $10.00Was: $10.95Cylinder base gasket for Sportster models09345049- SKU:
- 09345049
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- TYPE:
- CYLINDER BASE
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- STREET
- MATERIAL:
- VITON
MSRP: $10.95Now: $10.00Was: $10.95 -
On Sale
COMETIC Primary Gasket Kit C9125
COMETIC
MSRP: $43.00Now: $40.00Was: $43.00Cometic's proprietary AFM (Aluminum Foamette Material) gaskets feature an aluminum core with a chemically blown, compounded nitrile synthetic rubber bonded to the outside, Gaskets have resistance to temperatures of more than 2500°F, Have an 85%...09344801- SKU:
- 09344801
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- TYPE:
- PRIMARY
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET KIT
- MATERIAL:
- AFM (ALUMINUM FOAM MATERIAL)
- RIDING STYLE:
- STREET
MSRP: $43.00Now: $40.00Was: $43.00 -
On Sale
COMETIC Engine Gasket Kit - Iron XL C9049F
COMETIC
MSRP: $154.30Now: $145.00Was: $154.30Every gasket in these kits uses the best materials possible for its intended application, Multi-Layer Steel (MLS) head gaskets, Steel Viton®-coated base gaskets, Blue Viton valve stem seals, Aluminum Foam Material (AFM) race-style exhaust gaskets,...09344799- SKU:
- 09344799
- Availability:
- Ships Same Business Day
- Weight:
- 1.35 LBS
- BORE SIZE:
- 3,1875'
- PRODUCT NAME:
- GASKET KIT
- BORE SIZE IMPERIAL:
- 3.1875'
- MATERIAL:
- STEEL
- MATERIAL:
- VITON
- TYPE:
- COMPLETE
- UNITS:
- KIT
- MATERIAL:
- AFM (ALUMINUM FOAM MATERIAL)
- RIDING STYLE:
- STREET
MSRP: $154.30Now: $145.00Was: $154.30 -
FEULING OIL PUMP CORP. Sandwich Adapter Kit 2023
FEULING OIL PUMP CORP.
$25.95Sandwich-style mounts allow easy hook-up of any style remote oil cooler or additional oil filter set up, 1/8" NPT ports, Designed with pressure relief valve rather than standard thermostat; pressure relief valve allows constant oil flow through remote...09344746- SKU:
- 09344746
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- TYPE:
- OIL FILTER
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$25.95 -
On Sale
COMETIC Case Saver Gasket C10125
COMETIC
MSRP: $52.45Now: $49.00Was: $52.45Cometic's proprietary AFM (Aluminum Foamette Material) gaskets feature an aluminum core with a chemically blown, compounded nitrile synthetic rubber bonded to the outside, Gaskets have resistance to temperatures of more than 2500°F, Have an 85%...09344745- SKU:
- 09344745
- Availability:
- Ships Same Business Day
- Weight:
- 0.16 LBS
- MATERIAL:
- AFM (ALUMINUM FOAM MATERIAL)
- MOUNTING POSITION:
- INNER
- UNITS:
- 5 PACK
- PRODUCT NAME:
- GASKET
- THICKNESS:
- 0,81 MM (0,032')
- THICKNESS METRIC:
- 0.81 MM
- RIDING STYLE:
- STREET
- THICKNESS IMPERIAL:
- 0,032'
- TYPE:
- PRIMARY
MSRP: $52.45Now: $49.00Was: $52.45 -
On Sale
COMETIC Complete Gasket Kit - Big Twin C10123-030
COMETIC
MSRP: $287.65Now: $270.00Was: $287.65Every gasket in these kits uses the best materials possible for its intended application, Multi-Layer Steel (MLS) head gaskets, Steel Viton®-coated base gaskets, Blue Viton valve stem seals, Aluminum Foam Material (AFM) race-style exhaust gaskets,...09344744- SKU:
- 09344744
- Availability:
- Ships Same Business Day
- Weight:
- 1.80 LBS
- MATERIAL:
- STEEL
- TYPE:
- COMPLETE
- PRODUCT NAME:
- GASKET KIT
- UNITS:
- KIT
- THICKNESS IMPERIAL:
- 0,030'
- THICKNESS METRIC:
- 0.76 MM
- BORE SIZE:
- 3,937'
- BORE SIZE IMPERIAL:
- 3.937'
- MATERIAL:
- AFM (ALUMINUM FOAM MATERIAL)
- MATERIAL:
- VITON
- RIDING STYLE:
- STREET
MSRP: $287.65Now: $270.00Was: $287.65 -
On Sale
COMETIC Cam Cover Gasket - XL C9332F-1
COMETIC
MSRP: $15.70Now: $15.00Was: $15.70COMETIC Cam Cover Gasket - XL09344682- SKU:
- 09344682
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- TYPE:
- CAM COVER
- UNITS:
- EACH
- THICKNESS:
- 1,52 MM (0,060')
- THICKNESS METRIC:
- 1.52 MM
- MATERIAL:
- AFM (ALUMINUM FOAM MATERIAL)
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- STREET
- THICKNESS IMPERIAL:
- 0.060'
MSRP: $15.70Now: $15.00Was: $15.70Qty in Cart: 0Quantity:Price:MSRP: $15.70Now: $15.00Was: $15.70Subtotal: -
On Sale
COMETIC Magneto Cover Gasket C9327-5
COMETIC
Now: $5.00Was: $5.20Made in the U.S.A.09344681- SKU:
- 09344681
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- STREET
- TYPE:
- MAG COVER
- UNITS:
- 5 PACK
- MATERIAL:
- FIBER
- TYPE:
- IGNITION COVER
Now: $5.00Was: $5.20 -
On Sale
COMETIC Starter Housing Gasket C9324
COMETIC
Now: $21.00Was: $22.10Made in the U.S.A.09344679- SKU:
- 09344679
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- THICKNESS IMPERIAL:
- 0,031'
- UNITS:
- 10 PACK
- THICKNESS METRIC:
- 0.79 MM
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- STREET
- THICKNESS:
- 0,79 MM (0,031')
- MATERIAL:
- FIBER
- TYPE:
- STARTER HOUSING
Now: $21.00Was: $22.10 -
On Sale
COMETIC Generator Mount Gasket C9321
COMETIC
MSRP: $4.15Now: $4.00Was: $4.20Made in the U.S.A.09344675- SKU:
- 09344675
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- MATERIAL:
- FIBER
- THICKNESS IMPERIAL:
- 0,020'
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- STREET
- THICKNESS:
- 0,51 MM (0,020')
- TYPE:
- GENERATOR
- THICKNESS METRIC:
- 0.51 MM
- UNITS:
- 5 PACK
MSRP: $4.15Now: $4.00Was: $4.20Qty in Cart: 0Quantity:Price:MSRP: $4.15Now: $4.00Was: $4.20Subtotal: -
On Sale
COMETIC Primary Gasket C9318F5
COMETIC
Now: $88.00Was: $93.10Cometic's proprietary AFM (Aluminum Foamette Material) gaskets feature an aluminum core with a chemically blown, compounded nitrile synthetic rubber bonded to the outside, Gaskets have resistance to temperatures of more than 2500°F, Have an 85%...09344673- SKU:
- 09344673
- Availability:
- Ships Same Business Day
- Weight:
- 0.40 LBS
- MATERIAL:
- AFM (ALUMINUM FOAM MATERIAL)
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- GASKET
- TYPE:
- PRIMARY
- UNITS:
- 5 PACK
Now: $88.00Was: $93.10 -
On Sale
COMETIC Primary Gasket C9318F1
COMETIC
MSRP: $31.45Now: $30.00Was: $31.45Cometic's proprietary AFM (Aluminum Foamette Material) gaskets feature an aluminum core with a chemically blown, compounded nitrile synthetic rubber bonded to the outside, Gaskets have resistance to temperatures of more than 2500°F, Have an 85%...09344672- SKU:
- 09344672
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- MATERIAL:
- AFM (ALUMINUM FOAM MATERIAL)
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- STREET
- THICKNESS METRIC:
- 1.52 MM
- THICKNESS:
- 1,52 MM (0,060')
- TYPE:
- PRIMARY COVER
- UNITS:
- EACH
- THICKNESS IMPERIAL:
- 0.060'
MSRP: $31.45Now: $30.00Was: $31.45 -
On Sale
COMETIC Primary Gasket C9317F5
COMETIC
Now: $70.00Was: $74.30Cometic's proprietary AFM (Aluminum Foamette Material) gaskets feature an aluminum core with a chemically blown, compounded nitrile synthetic rubber bonded to the outside, Gaskets have resistance to temperatures of more than 2500°F, Have an 85%...09344671- SKU:
- 09344671
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- MATERIAL:
- AFM (ALUMINUM FOAM MATERIAL)
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- STREET
- THICKNESS IMPERIAL:
- 0.060'
- UNITS:
- 5 PACK
- MOUNTING POSITION:
- OUTER
- THICKNESS:
- 1,52 MM (0,060')
- THICKNESS METRIC:
- 1.52 MM
- TYPE:
- PRIMARY
Now: $70.00Was: $74.30 -
On Sale
COMETIC Primary Gasket C9317F1
COMETIC
MSRP: $25.15Now: $24.00Was: $25.15Cometic's proprietary AFM (Aluminum Foamette Material) gaskets feature an aluminum core with a chemically blown, compounded nitrile synthetic rubber bonded to the outside, Gaskets have resistance to temperatures of more than 2500°F, Have an 85%...09344670- SKU:
- 09344670
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- STREET
- THICKNESS IMPERIAL:
- 0.060'
- TYPE:
- PRIMARY
- MATERIAL:
- AFM (ALUMINUM FOAM MATERIAL)
- THICKNESS METRIC:
- 1.52 MM
- UNITS:
- EACH
- THICKNESS:
- 1,52 MM (0,060')
MSRP: $25.15Now: $24.00Was: $25.15Qty in Cart: 0Quantity:Price:MSRP: $25.15Now: $24.00Was: $25.15Subtotal: -
JAMES GASKET Transmission Pan Gasket - FXD 26072-90-F
JAMES GASKET
$29.95Made in the U.S.A.09344638- SKU:
- 09344638
- Availability:
- Ships Same Business Day
- Weight:
- 0.03 LBS
- RIDING STYLE:
- STREET
- TYPE:
- OIL PAN
- PRODUCT NAME:
- GASKET
- UNITS:
- EACH
- MATERIAL:
- FOAMET
$29.95 -
JAMES GASKET Primary Cover Gasket 34955-67-F5
JAMES GASKET
$156.00Top quality gaskets, seals and o-rings meet or exceed OEM specifications, Primary gasket features silicone beading, Made in the U.S.A.09342114- SKU:
- 09342114
- Availability:
- Ships Same Business Day
- Weight:
- 0.35 LBS
- FEATURES:
- BEADED
- MATERIAL:
- FOAMET
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- STREET
- STYLE:
- PRIMARY
- UNITS:
- 5 PACK
- TYPE:
- COVER
$156.00 -
JAMES GASKET Primary Cover Gasket 34955-67-F
JAMES GASKET
$45.95Top quality gaskets, seals and o-rings meet or exceed OEM specifications, Primary gasket features silicone beading, Made in the U.S.A.09342113- SKU:
- 09342113
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- FEATURES:
- BEADED
- UNITS:
- EACH
- TYPE:
- COVER
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- STREET
- MATERIAL:
- FOAMET
- STYLE:
- PRIMARY
$45.95
