Harley Engine Gaskets and Kits
Harley Bike Gaskets & Kits at JJ Motorsports
Rebuild your Harley with premium gasket kits and seals from JJ Motorsports, featuring complete top-end, motor, and cam-install kits for leak-free performance on Milwaukee-Eight, Twin Cam, Evo, and Big Twin engines. These high-quality MLS, rubber, and metal gaskets ensure perfect sealing and long-term reliability.
Shop Feuling, Cometic, and James Gasket for proven sealing solutions. Explore related categories such as Harley engine for cams and lifters, or Harley for oil pumps and heads to complete your rebuild.
Top Harley Gaskets & Kits
- Feuling Top-End Cam Install Kit M8 2030 – Complete top-end gasket kit for Milwaukee-Eight; includes head, base, rocker, and pushrod seals.
- Cometic Complete Gasket Kit C9748F – Full engine gasket set with MLS head gaskets; fits Twin Cam 88/96/103 engines.
- James Gasket Motor Gasket Metal Base Rocker 17041-92-A – Metal rocker box base gasket set; OEM-style for Evo and Twin Cam rocker boxes.
Browse our in-stock inventory below with same-day shipping and expert support. Free shipping on orders over $99! Questions? Contact us for fitment advice!
- Product
- Qty in Cart
- Quantity
- Price
- Subtotal
-
COMETIC Top End Gasket Kit - 883 C9194
COMETIC
$229.90EST (Extreme Sealing Technology) gasket kits include embossed stainless steel head, base, and rocker gaskets covered with a proprietary rubber material, Head gasket material allows heat to be drawn away from the combustion ring and dissipated evenly...09344805- SKU:
- 09344805
- Availability:
- Ships Same Business Day
- Weight:
- 0.95 LBS
- BORE SIZE IMPERIAL:
- 3.000'
- MATERIAL:
- VITON
- RIDING STYLE:
- STREET
- BORE SIZE:
- 3,000'
- PRODUCT NAME:
- GASKET KIT
- UNITS:
- KIT
- ENGINE TYPE:
- 4-STROKE
- MATERIAL:
- RUBBER
- MATERIAL:
- STEEL
- TYPE:
- TOP END
- DISPLACEMENT:
- 883 CC
- THICKNESS IMPERIAL:
- 0,030'
- THICKNESS METRIC:
- 0.76 MM
$229.90Qty in Cart: 0Quantity:Price:$229.90Subtotal: -
COMETIC Primary Gasket Kit C9210
COMETIC
$56.65Cometic'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%...09344806- SKU:
- 09344806
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- RIDING STYLE:
- STREET
- TYPE:
- PRIMARY
- UNITS:
- KIT
- MATERIAL:
- AFM (ALUMINUM FOAM MATERIAL)
- PRODUCT NAME:
- GASKET KIT
$56.65 -
COMETIC Primary Gasket C9309F1
COMETIC
$45.10Cometic'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%...09344808- SKU:
- 09344808
- Availability:
- Ships Same Business Day
- Weight:
- 0.40 LBS
- MATERIAL:
- AFM (ALUMINUM FOAM MATERIAL)
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- STREET
- THICKNESS METRIC:
- 1.52 MM
- TYPE:
- PRIMARY
- THICKNESS:
- 1,52 MM (0,060')
- UNITS:
- EACH
- THICKNESS IMPERIAL:
- 0.060'
$45.10 -
COMETIC Primary Gasket - Softail C9607F1
COMETIC
$45.10Cometic'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%...09344809- SKU:
- 09344809
- Availability:
- Ships Same Business Day
- Weight:
- 0.31 LBS
- PRODUCT NAME:
- GASKET
- TYPE:
- PRIMARY
- RIDING STYLE:
- STREET
- MATERIAL:
- AFM (ALUMINUM FOAM MATERIAL)
- UNITS:
- EACH
$45.10 -
COMETIC Engine Gasket Kit - EVO/XL C9755F
COMETIC
$257.20Every 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,...09344812- SKU:
- 09344812
- Availability:
- Ships Same Business Day
- Weight:
- 1.81 LBS
- MATERIAL:
- AFM (ALUMINUM FOAM MATERIAL)
- BORE SIZE IMPERIAL:
- 3.000'
- RIDING STYLE:
- STREET
- BORE SIZE:
- 3,000'
- UNITS:
- KIT
- MATERIAL:
- RUBBER
- MATERIAL:
- STEEL
- PRODUCT NAME:
- GASKET KIT
- TYPE:
- COMPLETE
$257.20 -
COMETIC Complete Gasket Kit - Big Twin C10112
COMETIC
$209.95Every 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,...09344733- SKU:
- 09344733
- Availability:
- Ships Same Business Day
- Weight:
- 1.90 LBS
- MATERIAL:
- STEEL
- TYPE:
- COMPLETE
- UNITS:
- KIT
- MATERIAL:
- AFM (ALUMINUM FOAM MATERIAL)
- PRODUCT NAME:
- GASKET KIT
- THICKNESS IMPERIAL:
- 0,030'
- THICKNESS METRIC:
- 0.76 MM
- BORE SIZE:
- 3,937'
- BORE SIZE IMPERIAL:
- 3.937'
- MATERIAL:
- VITON
- RIDING STYLE:
- STREET
$209.95 -
COMETIC Complete Gasket Kit - Big Twin C10113
COMETIC
$209.95Every 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,...09344734- SKU:
- 09344734
- Availability:
- Ships Same Business Day
- Weight:
- 1.85 LBS
- BORE SIZE IMPERIAL:
- 4.060'
- MATERIAL:
- STEEL
- PRODUCT NAME:
- GASKET KIT
- TYPE:
- COMPLETE
- RIDING STYLE:
- STREET
- THICKNESS IMPERIAL:
- 0,040'
- THICKNESS METRIC:
- 1.02 MM
- UNITS:
- KIT
- BORE SIZE:
- 4,060'
- MATERIAL:
- AFM (ALUMINUM FOAM MATERIAL)
- MATERIAL:
- VITON
$209.95 -
COMETIC Head Gasket C9564-2
COMETIC
$23.05Center or shim layer is uncoated stainless steel, which can be varied to accommodate multiple thickness requirements, Outer layers are embossed and coated on both sides with Viton to meet the demands of a variety of harsh sealing environments, load...09344708- SKU:
- 09344708
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- RIDING STYLE:
- STREET
- MATERIAL:
- COPPER
- PRODUCT NAME:
- GASKET
- THICKNESS:
- 0,81 MM (0,032')
- THICKNESS METRIC:
- 0.81 MM
- UNITS:
- PAIR
- THICKNESS IMPERIAL:
- 0,032'
- TYPE:
- CYLINDER HEAD
$23.05 -
COMETIC Head Gasket C9565-2
COMETIC
$23.05Center or shim layer is uncoated stainless steel, which can be varied to accommodate multiple thickness requirements, Outer layers are embossed and coated on both sides with Viton to meet the demands of a variety of harsh sealing environments, load...09344709- SKU:
- 09344709
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- RIDING STYLE:
- STREET
- THICKNESS IMPERIAL:
- 0,032'
- MATERIAL:
- COPPER
- PRODUCT NAME:
- GASKET
- THICKNESS:
- 0,81 MM (0,032')
- UNITS:
- PAIR
- THICKNESS METRIC:
- 0.81 MM
- TYPE:
- CYLINDER HEAD
$23.05 -
COMETIC Head Gasket C9566-2
COMETIC
$23.05Center or shim layer is uncoated stainless steel, which can be varied to accommodate multiple thickness requirements, Outer layers are embossed and coated on both sides with Viton to meet the demands of a variety of harsh sealing environments, load...09344710- SKU:
- 09344710
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- RIDING STYLE:
- STREET
- THICKNESS IMPERIAL:
- 0,043'
- MATERIAL:
- COPPER
- PRODUCT NAME:
- GASKET
- THICKNESS METRIC:
- 1.09 MM
- THICKNESS:
- 1,09 MM (0,043')
- TYPE:
- CYLINDER HEAD
- UNITS:
- PAIR
$23.05 -
COMETIC Cylinder Base Gasket C9603-2
COMETIC
$6.95Cylinder base gasket for Sportster models09344715- SKU:
- 09344715
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- PRODUCT NAME:
- GASKET
- THICKNESS:
- 0,79 MM (0,031')
- RIDING STYLE:
- STREET
- THICKNESS METRIC:
- 0.79 MM
- MATERIAL:
- FIBER
- TYPE:
- CYLINDER BASE
- UNITS:
- PAIR
- BORE SIZE IMPERIAL:
- STANDARD
- THICKNESS IMPERIAL:
- 0,031'
$6.95Qty in Cart: 0Quantity:Price:$6.95Subtotal: -
COMETIC Pushrod Cover Seals C9606
COMETIC
$6.40Contains the correct seals and O-rings needed for a complete rebuild09344716- SKU:
- 09344716
- Availability:
- Ships Same Business Day
- Weight:
- 0.16 LBS
- RIDING STYLE:
- STREET
- TYPE:
- PUSHROD COVER
- UNITS:
- 25 PACK
- PRODUCT NAME:
- GASKET
$6.40 -
COMETIC Cylinder Base Gasket C9618
COMETIC
$11.95Cylinder base gasket for Sportster models09344718- SKU:
- 09344718
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- BORE SIZE IMPERIAL:
- 3.625'
- TYPE:
- CYLINDER BASE
- UNITS:
- PAIR
- THICKNESS:
- 0,79 MM (0,031')
- THICKNESS IMPERIAL:
- 0,031'
- PRODUCT NAME:
- GASKET
- MATERIAL:
- FIBER
- RIDING STYLE:
- STREET
- THICKNESS METRIC:
- 0.79 MM
$11.95Qty in Cart: 0Quantity:Price:$11.95Subtotal: -
COMETIC Head Gasket C9698-2
COMETIC
$34.60Center or shim layer is uncoated stainless steel, which can be varied to accommodate multiple thickness requirements, Outer layers are embossed and coated on both sides with Viton to meet the demands of a variety of harsh sealing environments, load...09344719- SKU:
- 09344719
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- TYPE:
- CYLINDER HEAD
- UNITS:
- PAIR
- MATERIAL:
- COPPER
- PRODUCT NAME:
- GASKET
- THICKNESS:
- 0,51 MM (0,020')
- THICKNESS METRIC:
- 0.51 MM
- RIDING STYLE:
- STREET
- THICKNESS IMPERIAL:
- 0,020'
$34.60 -
COMETIC Cam Service Gasket Kit C9624F
COMETIC
$26.20Components made from premium materials for long life and correct fitment, Includes all necessary gaskets, seals, O-rings and cork washers to do a cam change, Made in the U.S.A.09341358- SKU:
- 09341358
- Availability:
- Ships Same Business Day
- Weight:
- 0.29 LBS
- UNITS:
- KIT
- RIDING STYLE:
- STREET
- TYPE:
- CAM CHANGE
- PRODUCT NAME:
- GASKET KIT
$26.20 -
COMETIC Oil Pump Paper Gasket C9383
COMETIC
$7.40Made in the U.S.A.09341361- SKU:
- 09341361
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- THICKNESS METRIC:
- 0.25 MM
- MATERIAL:
- VULCANIZED FIBER
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- STREET
- THICKNESS:
- 0,25 MM (0,010')
- THICKNESS IMPERIAL:
- 0,010'
- TYPE:
- OIL PUMP
- UNITS:
- 10 PACK
- MATERIAL:
- PAPER
$7.40 -
COMETIC Oil Pump Paper Gasket C9381
COMETIC
$7.40Made in the U.S.A.09341362- SKU:
- 09341362
- Availability:
- Ships Same Business Day
- Weight:
- 0.03 LBS
- MATERIAL:
- PAPER
- RIDING STYLE:
- STREET
- MATERIAL:
- VULCANIZED FIBER
- PRODUCT NAME:
- GASKET
- TYPE:
- OIL PUMP
- UNITS:
- 10 PACK
$7.40 -
COMETIC Oil Pump Paper Gasket C9384
COMETIC
$7.40Made in the U.S.A.09341364- SKU:
- 09341364
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- MATERIAL:
- PAPER
- PRODUCT NAME:
- GASKET
- TYPE:
- OIL PUMP
- UNITS:
- 10 PACK
- RIDING STYLE:
- STREET
- THICKNESS METRIC:
- 0.25 MM
- THICKNESS:
- 0,25 MM (0,010')
- THICKNESS IMPERIAL:
- 0,010'
$7.40 -
COMETIC Inspection Cover Gasket - XL C9326F5
COMETIC
$16.40Made in the U.S.A.09341365- SKU:
- 09341365
- Availability:
- Ships Same Business Day
- Weight:
- 0.16 LBS
- PRODUCT NAME:
- GASKET
- THICKNESS IMPERIAL:
- 0.060'
- MATERIAL:
- AFM (ALUMINUM FOAM MATERIAL)
- UNITS:
- 5 PACK
- THICKNESS:
- 1,52 MM (0,060')
- TYPE:
- INSPECTION COVER
- RIDING STYLE:
- STREET
- THICKNESS METRIC:
- 1.52 MM
$16.40 -
COMETIC Head Gasket - 3.937" x .030" C10083-030
COMETIC
$59.80Center or shim layer is uncoated stainless steel, which can be varied to accommodate multiple thickness requirements, Outer layers are embossed and coated on both sides with Viton to meet the demands of a variety of harsh sealing environments, load...09343145- SKU:
- 09343145
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- BORE SIZE IMPERIAL:
- 3.937'
- THICKNESS:
- 0,76 MM (0,030')
- MATERIAL:
- VITON
- THICKNESS IMPERIAL:
- 0,030'
- BORE SIZE:
- 3,937'
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- STREET
- THICKNESS METRIC:
- 0.76 MM
- TYPE:
- CYLINDER HEAD
- UNITS:
- PAIR
$59.80
Buying Guide and FAQs
Buying Guide: Factors to Consider When Choosing Harley Bike Engine Gaskets and Kits
- Compatibility: Ensure the kit fits your Harley's engine type (e.g., Milwaukee-Eight M8, Twin Cam 88/96/103, Evo, Big Twin) and model (e.g., FLHR Road King 1984-1998, FLST Heritage Softail 2006). Use the vehicle selector for year-specific matches, including bore sizes and applications to avoid sealing issues.
- Type of Use: For cam changes or top-end rebuilds, select install kits with ARP bolts; complete gasket sets suit full engine overhauls for leak-free performance in touring or street riding.
- Components and Upgrades: Choose kits with MLS head gaskets, Viton seals, AFM exhaust gaskets, ARP hardware, and O-rings. Focus on high-tech materials for heat dissipation, corrosion resistance, and reliable sealing.
- Brand and Quality: Opt for Feuling for cam install kits with Koyo bearings, Cometic for EST gasket sets with embossed steel, James Gasket for rocker/base gaskets, Vance & Hines for exhaust ports, or Drag Specialties for transmission boards. Prioritize USA-made quality for durability in extreme conditions.
- Installation and Cost: Kits are designed for DIY or professional rebuilds with included components like moly paste and Loctite. Prices range from $16.95 for exhaust gaskets to $356.95 for complete sets—factor in bore sizes and free shipping over $99 for value.
Frequently Asked Questions (FAQs)
- What Harley models and engines do these gaskets and kits support? Kits support Big Twin, Twin Cam, Evo, M8, and models like Road King, Heritage Softail—use the year/make/model filter for compatibility, including bore sizes like 3.500" to 3.8125".
- How do high-tech materials improve sealing? Materials like MLS steel, Viton-coated, and AFM provide even heat dissipation, corrosion resistance, and leak-free performance for rebuilds.
- What is typically included in a cam install kit? Feuling kits include seals, bearings, ARP bolts, moly paste, Loctite, washers, and copper gaskets for complete cam changes.
- Are these kits suitable for top-end rebuilds? Yes, Cometic and James Gasket kits focus on top-end with head/base/rocker gaskets for reliable overhauls.
- What if a kit doesn't fit my Harley? Verify engine type, bore size, and model before buying. Our returns policy allows exchanges or refunds if it doesn't match.
- Can I find related engine parts? Yes—explore pistons/rings, cylinders/heads, bearings/seals, or full rebuild kits in the Harley engine category to complete your gasket upgrade.
