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
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COMETIC Cylinder Head Gasket/Base C10191-HB
COMETIC
$81.85Kits feature Multi-Layer Steel (MLS) gaskets; feature two outer Viton®-coated embossed spring steel layers with an inner steel layer to provide additional support, Made in the U.S.A.09345952- SKU:
- 09345952
- Availability:
- Ships Same Business Day
- Weight:
- 0.45 LBS
- BORE SIZE:
- 4,250'
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- STREET
- THICKNESS IMPERIAL:
- 0,014'
- THICKNESS METRIC:
- 1.02 MM
- BORE SIZE IMPERIAL:
- 4.250'
- THICKNESS:
- 1,02 MM (0,040')
- THICKNESS IMPERIAL:
- 0,040'
- MATERIAL:
- LAYERED STEEL
- THICKNESS:
- 0,36 MM (0,014')
- THICKNESS METRIC:
- 0.36 MM
- TYPE:
- CYLINDER BASE
- TYPE:
- CYLINDER HEAD
- UNITS:
- KIT
$81.85Qty in Cart: 0Quantity:Price:$81.85Subtotal: -
COMETIC Cylinder Head/Base Gasket C10192-HB
COMETIC
$81.85Kits feature Multi-Layer Steel (MLS) gaskets; feature two outer Viton®-coated embossed spring steel layers with an inner steel layer to provide additional support, Made in the U.S.A.09345954- SKU:
- 09345954
- Availability:
- Ships Same Business Day
- Weight:
- 0.45 LBS
- THICKNESS IMPERIAL:
- 0,040'
- THICKNESS METRIC:
- 1.02 MM
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- STREET
- THICKNESS IMPERIAL:
- 0,014'
- BORE SIZE:
- 4,320'
- BORE SIZE IMPERIAL:
- 4.320'
- MATERIAL:
- LAYERED STEEL
- THICKNESS:
- 0,36 MM (0,014')
- THICKNESS:
- 1,02 MM (0,040')
- THICKNESS METRIC:
- 0.36 MM
- TYPE:
- CYLINDER BASE
- TYPE:
- CYLINDER HEAD
- UNITS:
- KIT
$81.85 -
COMETIC Trans End Gasket C9483F
COMETIC
$19.90Aluminum 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.09341385- SKU:
- 09341385
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- THICKNESS:
- 0,81 MM (0,032')
- UNITS:
- 10 PACK
- MATERIAL:
- AFM (ALUMINUM FOAM MATERIAL)
- PRODUCT NAME:
- GASKET
- THICKNESS IMPERIAL:
- 0,032'
- RIDING STYLE:
- STREET
- THICKNESS METRIC:
- 0.81 MM
- TYPE:
- CLUTCH RELEASE
- TYPE:
- END COVER
$19.90 -
COMETIC Oil Gasket C9489F
COMETIC
$9.50Aluminum 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.09341386- SKU:
- 09341386
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- RIDING STYLE:
- STREET
- THICKNESS IMPERIAL:
- 0,032'
- THICKNESS METRIC:
- 0.81 MM
- TYPE:
- OIL FILLER
- MATERIAL:
- AFM (ALUMINUM FOAM MATERIAL)
- PRODUCT NAME:
- GASKET
- THICKNESS:
- 0,81 MM (0,032')
- UNITS:
- 10 PACK
$9.50Qty in Cart: 0Quantity:Price:$9.50Subtotal: -
COMETIC Bearing Housing Gasket C9644F
COMETIC
$20.60Aluminum 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.09341390- SKU:
- 09341390
- Availability:
- Ships Same Business Day
- Weight:
- 0.16 LBS
- RIDING STYLE:
- STREET
- THICKNESS METRIC:
- 0.81 MM
- TYPE:
- TRANSMISSION
- TYPE:
- BEARING HOUSING
- UNITS:
- 10 PACK
- MATERIAL:
- AFM (ALUMINUM FOAM MATERIAL)
- PRODUCT NAME:
- GASKET
- THICKNESS:
- 0,81 MM (0,032')
- THICKNESS IMPERIAL:
- 0,032'
$20.60 -
COMETIC Inner Rocker Gasket C9197
COMETIC
$5.20Viton gaskets feature a stainless steel core with a .001"-thick coating of Viton rubber on both sides., Made in the U.S.A.09341396- SKU:
- 09341396
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- MOUNTING POSITION:
- INNER
- MATERIAL:
- SILICONE
- PRODUCT NAME:
- GASKET
- TYPE:
- ROCKER COVER
- UNITS:
- PAIR
- RIDING STYLE:
- STREET
$5.20 -
COMETIC Lower Rocker Cover Rubber Gasket C9014
COMETIC
$26.90Viton gaskets feature a stainless steel core with a .001"-thick coating of Viton rubber on both sides., Made in the U.S.A.09341399- SKU:
- 09341399
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- GASKET
- UNITS:
- 5 PACK
- MOUNTING POSITION:
- LOWER
- MATERIAL:
- VITON
- TYPE:
- ROCKER COVER
$26.90Qty in Cart: 0Quantity:Price:$26.90Subtotal: -
COMETIC Upper Rocker Cover Rubber Gasket C9010
COMETIC
$26.90Viton gaskets feature a stainless steel core with a .001"-thick coating of Viton rubber on both sides., Made in the U.S.A.09341400- SKU:
- 09341400
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- GASKET
- UNITS:
- 5 PACK
- MATERIAL:
- VITON
- MOUNTING POSITION:
- UPPER
- TYPE:
- ROCKER COVER
$26.90Qty in Cart: 0Quantity:Price:$26.90Subtotal: -
COMETIC Rocker Cover Rubber Gasket C9276
COMETIC
$20.10Viton gaskets feature a stainless steel core with a .001"-thick coating of Viton rubber on both sides., Made in the U.S.A.09341401- SKU:
- 09341401
- Availability:
- Ships Same Business Day
- Weight:
- 0.18 LBS
- MATERIAL:
- VITON
- MOUNTING POSITION:
- UPPER
- TYPE:
- ROCKER COVER
- PRODUCT NAME:
- GASKET
- UNITS:
- 5 PACK
- RIDING STYLE:
- STREET
$20.10 -
COMETIC Trans Gasket - FXD C9151
COMETIC
$75.55High quality, application specific materials give a long and reliable life, Kit includes all necessary gaskets, seals and O-rings needed for each application, Made in the U.S.A.09341211- SKU:
- 09341211
- Availability:
- Ships Same Business Day
- Weight:
- 0.37 LBS
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- STREET
- TYPE:
- TRANSMISSION
$75.55 -
COMETIC Head Gasket - .051" - MLS Standard C9157
COMETIC
$61.90Center 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...09341213- SKU:
- 09341213
- Availability:
- Ships Same Business Day
- Weight:
- 0.32 LBS
- BORE SIZE:
- 3,750'
- MATERIAL:
- LAYERED STEEL
- BORE SIZE IMPERIAL:
- 3.750'
- RIDING STYLE:
- STREET
- THICKNESS IMPERIAL:
- 0,051'
- TYPE:
- CYLINDER HEAD
- PRODUCT NAME:
- GASKET
- THICKNESS METRIC:
- 1.29 MM
- UNITS:
- PAIR
- MATERIAL:
- VITON
- THICKNESS:
- 1,29 MM (0,051')
$61.90Qty in Cart: 0Quantity:Price:$61.90Subtotal: -
COMETIC Trans Bearing Gasket - Twin Cam C9187
COMETIC
$20.60Aluminum 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.09341232- SKU:
- 09341232
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- RIDING STYLE:
- STREET
- THICKNESS IMPERIAL:
- 0,032'
- THICKNESS METRIC:
- 0.81 MM
- TYPE:
- BEARING HOUSING
- MATERIAL:
- AFM (ALUMINUM FOAM MATERIAL)
- PRODUCT NAME:
- GASKET
- THICKNESS:
- 0,81 MM (0,032')
- UNITS:
- 10 PACK
$20.60 -
COMETIC Complete Gasket Kit - FLT/FXR - 5 Speed C9750F
COMETIC
$356.95Every 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,...09340729- SKU:
- 09340729
- Availability:
- Ships Same Business Day
- Weight:
- 1.95 LBS
- BORE SIZE IMPERIAL:
- 3.500'
- UNITS:
- KIT
- MATERIAL:
- STEEL
- MATERIAL:
- VITON
- TYPE:
- COMPLETE
- BORE SIZE:
- 3,500'
- MATERIAL:
- AFM (ALUMINUM FOAM MATERIAL)
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- STREET
- THICKNESS IMPERIAL:
- 0,040'
- THICKNESS METRIC:
- 1.02 MM
$356.95Qty in Cart: 0Quantity:Price:$356.95Subtotal: -
COMETIC Complete Gasket Kit - ST/FXD C9777F
COMETIC
$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,...09340731- SKU:
- 09340731
- Availability:
- Ships Same Business Day
- Weight:
- 1.80 LBS
- MATERIAL:
- VITON
- RIDING STYLE:
- STREET
- MATERIAL:
- AFM (ALUMINUM FOAM MATERIAL)
- PRODUCT NAME:
- GASKET KIT
- BORE SIZE:
- STANDARD
- BORE SIZE IMPERIAL:
- STANDARD
- MATERIAL:
- STEEL
- TYPE:
- COMPLETE
- UNITS:
- KIT
$287.65 -
COMETIC Motor Gasket Kit - XL C9952
COMETIC
$202.60Every 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,...09340736- SKU:
- 09340736
- Availability:
- Ships Same Business Day
- Weight:
- 1.85 LBS
- PRODUCT NAME:
- GASKET KIT
- THICKNESS IMPERIAL:
- 0,040'
- THICKNESS METRIC:
- 1.02 MM
- RIDING STYLE:
- STREET
- BORE SIZE IMPERIAL:
- 3.500'
- MATERIAL:
- STEEL
- MATERIAL:
- VITON
- TYPE:
- COMPLETE
- UNITS:
- KIT
- BORE SIZE:
- 3,500'
- MATERIAL:
- AFM (ALUMINUM FOAM MATERIAL)
$202.60 -
COMETIC Top End Gasket - 3-3/4" - Big Twin C9771
COMETIC
$142.75EST (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...09340756- SKU:
- 09340756
- Availability:
- Ships Same Business Day
- Weight:
- 0.78 LBS
- BORE SIZE IMPERIAL:
- 3.750'
- RIDING STYLE:
- STREET
- TYPE:
- TOP END
- BORE SIZE:
- 3,750'
- ENGINE TYPE:
- 4-STROKE
- MATERIAL:
- RUBBER
- MATERIAL:
- STAINLESS STEEL
- PRODUCT NAME:
- GASKET KIT
- UNITS:
- KIT
$142.75Qty in Cart: 0Quantity:Price:$142.75Subtotal: -
COMETIC Top End Gasket - 1200 XL C9971
COMETIC
$142.75EST (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...09340761- SKU:
- 09340761
- Availability:
- Ships Same Business Day
- Weight:
- 0.90 LBS
- ENGINE TYPE:
- 4-STROKE
- MATERIAL:
- RUBBER
- UNITS:
- KIT
- BORE SIZE:
- 3,500'
- BORE SIZE IMPERIAL:
- 3.500'
- PRODUCT NAME:
- GASKET KIT
- DISPLACEMENT:
- 1200 CC
- RIDING STYLE:
- STREET
- THICKNESS METRIC:
- 0.76 MM
- MATERIAL:
- STAINLESS STEEL
- THICKNESS IMPERIAL:
- 0,030'
- TYPE:
- TOP END
$142.75Qty in Cart: 0Quantity:Price:$142.75Subtotal: -
COMETIC Top End Gasket - .030" C9844
COMETIC
$150.10EST (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...09340762- SKU:
- 09340762
- Availability:
- Ships Same Business Day
- Weight:
- 0.78 LBS
- MATERIAL:
- RUBBER
- UNITS:
- KIT
- BORE SIZE:
- 3,875'
- MATERIAL:
- STAINLESS STEEL
- THICKNESS IMPERIAL:
- 0,030'
- THICKNESS METRIC:
- 0.76 MM
- TYPE:
- TOP END
- RIDING STYLE:
- STREET
- BORE SIZE IMPERIAL:
- 3.875'
- DISPLACEMENT:
- 95'
- ENGINE TYPE:
- 4-STROKE
- PRODUCT NAME:
- GASKET KIT
$150.10 -
COMETIC Top End Gasket - 3-3/4" C9770
COMETIC
$144.85EST (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...09340765- SKU:
- 09340765
- Availability:
- Ships Same Business Day
- Weight:
- 0.85 LBS
- ENGINE TYPE:
- 4-STROKE
- MATERIAL:
- STAINLESS STEEL
- PRODUCT NAME:
- GASKET KIT
- MATERIAL:
- RUBBER
- UNITS:
- KIT
- BORE SIZE IMPERIAL:
- 3.750'
- TYPE:
- TOP END
- BORE SIZE:
- 3,750'
- RIDING STYLE:
- STREET
$144.85Qty in Cart: 0Quantity:Price:$144.85Subtotal: -
COMETIC Top End Gasket - 3-5/8" C9918
COMETIC
$135.40EST (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...09340766- SKU:
- 09340766
- Availability:
- Ships Same Business Day
- Weight:
- 0.78 LBS
- BORE SIZE:
- 3,625'
- ENGINE TYPE:
- 4-STROKE
- MATERIAL:
- STEEL
- PRODUCT NAME:
- GASKET KIT
- BORE SIZE IMPERIAL:
- 3.625'
- MATERIAL:
- FOAM
- RIDING STYLE:
- STREET
- MATERIAL:
- ALUMINUM
- MATERIAL:
- VITON
- TYPE:
- TOP END
- UNITS:
- KIT
$135.40
