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 Complete Gasket Kit - FL/FLH C9966
COMETIC
$190.00Every 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,...09340816- SKU:
- 09340816
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
- MATERIAL:
- AFM (ALUMINUM FOAM MATERIAL)
- RIDING STYLE:
- STREET
- BORE SIZE:
- 3,437'
- MATERIAL:
- STEEL
- MATERIAL:
- VITON
- TYPE:
- COMPLETE
- UNITS:
- KIT
- BORE SIZE IMPERIAL:
- 3.437'
- PRODUCT NAME:
- GASKET KIT
$190.00 -
COMETIC Top End Gasket - 3-13/16" C9969
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...09340820- SKU:
- 09340820
- Availability:
- Ships Same Business Day
- Weight:
- 0.78 LBS
- ENGINE TYPE:
- 4-STROKE
- PRODUCT NAME:
- GASKET KIT
- BORE SIZE:
- 3,8125'
- MATERIAL:
- FOAM
- RIDING STYLE:
- STREET
- MATERIAL:
- ALUMINUM
- MATERIAL:
- VITON
- TYPE:
- TOP END
- BORE SIZE IMPERIAL:
- 3.8125'
- UNITS:
- KIT
$135.40 -
COMETIC Trans Gasket - 5 Speed C9466
COMETIC
$86.05High 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.09340821- SKU:
- 09340821
- Availability:
- Ships Same Business Day
- Weight:
- 1.14 LBS
- PRODUCT NAME:
- GASKET KIT
- STYLE:
- 5-SPEED
- UNITS:
- KIT
- RIDING STYLE:
- STREET
- TYPE:
- TRANSMISSION
$86.05Qty in Cart: 0Quantity:Price:$86.05Subtotal: -
COMETIC Trans Gasket - 5 Speed C9467
COMETIC
$102.85High 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.09340822- SKU:
- 09340822
- Availability:
- Ships Same Business Day
- Weight:
- 0.55 LBS
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- STREET
- TYPE:
- TRANSMISSION
- STYLE:
- 5-SPEED
- UNITS:
- KIT
$102.85Qty in Cart: 0Quantity:Price:$102.85Subtotal: -
COMETIC Trans Gasket - FXD C9468
COMETIC
$56.65High 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.09340823- SKU:
- 09340823
- Availability:
- Ships Same Business Day
- Weight:
- 0.53 LBS
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- STREET
- TYPE:
- TRANSMISSION
- STYLE:
- 5-SPEED
$56.65Qty in Cart: 0Quantity:Price:$56.65Subtotal: -
COMETIC Trans Gasket - Big Twin C9469
COMETIC
$81.85High 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.09340824- SKU:
- 09340824
- Availability:
- Ships Same Business Day
- Weight:
- 1.21 LBS
- TYPE:
- TRANSMISSION
- UNITS:
- KIT
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- GASKET KIT
$81.85 -
COMETIC Trans Gasket - FXD C9640
COMETIC
$47.20High 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.09340825- SKU:
- 09340825
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- TYPE:
- TRANSMISSION
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- STREET
$47.20Qty in Cart: 0Quantity:Price:$47.20Subtotal: -
COMETIC Trans Gasket - Twin Cam C9639
COMETIC
$47.20High 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.09340826- SKU:
- 09340826
- Availability:
- Ships Same Business Day
- Weight:
- 1.20 LBS
- TYPE:
- TRANSMISSION
- UNITS:
- KIT
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- GASKET KIT
$47.20 -
COMETIC Trans Gasket - Big Twin C9464F
COMETIC
$45.10High 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.09340827- SKU:
- 09340827
- Availability:
- Ships Same Business Day
- Weight:
- 0.43 LBS
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- GASKET KIT
- TYPE:
- TRANSMISSION
- UNITS:
- KIT
$45.10 -
COMETIC Trans Gasket - 4 Speed C9465
COMETIC
$67.15High 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.09340828- SKU:
- 09340828
- Availability:
- Ships Same Business Day
- Weight:
- 0.38 LBS
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- STREET
- STYLE:
- 4-SPEED
- TYPE:
- TRANSMISSION
$67.15 -
COMETIC One Piece Rocker Base - Evo C9865
COMETIC
$22.00Viton gaskets feature a stainless steel core with a .001"-thick coating of Viton rubber on both sides., Made in the U.S.A.09340001- SKU:
- 09340001
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- PRODUCT NAME:
- GASKET
- UNITS:
- PAIR
- RIDING STYLE:
- STREET
- THICKNESS:
- 0,51 MM (0,020')
- THICKNESS IMPERIAL:
- 0,020'
- THICKNESS METRIC:
- 0.51 MM
- MATERIAL:
- STEEL
- MATERIAL:
- VITON
- TYPE:
- ROCKER BOX
$22.00 -
COMETIC Base Gasket - Evo - 1340 - .020" C9870
COMETIC
$33.55Outer layers are embossed and coated on both sides with Viton to meet the demands of a variety of harsh sealing environments, load conditions, and surface finishes, MLS (Multi-Layer Steel) head gaskets promote an even torque load across the gasket...09340004- SKU:
- 09340004
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- MATERIAL:
- RUBBER
- MATERIAL:
- STEEL
- THICKNESS:
- 0,51 MM (0,020')
- TYPE:
- CYLINDER BASE
- UNITS:
- PAIR
- PRODUCT NAME:
- GASKET
- STYLE:
- STANDARD
- THICKNESS METRIC:
- 0.51 MM
- BORE SIZE IMPERIAL:
- 3.8125'
- RIDING STYLE:
- STREET
- THICKNESS IMPERIAL:
- 0,020'
$33.55 -
COMETIC Base Gasket - Evo - 4" - .010" C9871
COMETIC
$33.55Outer layers are embossed and coated on both sides with Viton to meet the demands of a variety of harsh sealing environments, load conditions, and surface finishes, MLS (Multi-Layer Steel) head gaskets promote an even torque load across the gasket...09340005- SKU:
- 09340005
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- MATERIAL:
- LAYERED STEEL
- MATERIAL:
- RUBBER
- TYPE:
- CYLINDER BASE
- BORE SIZE IMPERIAL:
- 4.000'
- STYLE:
- STANDARD
- THICKNESS:
- 0,25 MM (0,010')
- THICKNESS IMPERIAL:
- 0,010'
- PRODUCT NAME:
- GASKET
- UNITS:
- PAIR
- RIDING STYLE:
- STREET
- THICKNESS METRIC:
- 0.25 MM
$33.55Qty in Cart: 0Quantity:Price:$33.55Subtotal: -
COMETIC Base Gasket - Evo - 4" - .020" C9872
COMETIC
$33.55Outer layers are embossed and coated on both sides with Viton to meet the demands of a variety of harsh sealing environments, load conditions, and surface finishes, MLS (Multi-Layer Steel) head gaskets promote an even torque load across the gasket...09340006- SKU:
- 09340006
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- MATERIAL:
- LAYERED STEEL
- THICKNESS:
- 0,51 MM (0,020')
- THICKNESS METRIC:
- 0.51 MM
- PRODUCT NAME:
- GASKET
- TYPE:
- CYLINDER BASE
- UNITS:
- PAIR
- BORE SIZE IMPERIAL:
- 4.000'
- RIDING STYLE:
- STREET
- THICKNESS IMPERIAL:
- 0,020'
- STYLE:
- STANDARD
$33.55 -
COMETIC Head Gasket - 4"- .030" C9878
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...09340008- SKU:
- 09340008
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- BORE SIZE:
- 4,000'
- PRODUCT NAME:
- GASKET
- THICKNESS METRIC:
- 0.76 MM
- BORE SIZE IMPERIAL:
- 4.000'
- RIDING STYLE:
- STREET
- TYPE:
- CYLINDER HEAD
- MATERIAL:
- LAYERED STEEL
- MATERIAL:
- VITON
- UNITS:
- PAIR
- THICKNESS:
- 0,76 MM (0,030')
- THICKNESS IMPERIAL:
- 0,030'
$61.90Qty in Cart: 0Quantity:Price:$61.90Subtotal: -
COMETIC Head Gasket - 4"- .036" C9879
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...09340009- SKU:
- 09340009
- Availability:
- Ships Same Business Day
- Weight:
- 0.35 LBS
- PRODUCT NAME:
- GASKET
- THICKNESS METRIC:
- 0.91 MM
- UNITS:
- PAIR
- MATERIAL:
- LAYERED STEEL
- THICKNESS IMPERIAL:
- 0,036'
- BORE SIZE:
- 4,000'
- RIDING STYLE:
- STREET
- THICKNESS:
- 0,91 MM (0,036')
- TYPE:
- CYLINDER HEAD
- BORE SIZE IMPERIAL:
- 4.000'
$61.90Qty in Cart: 0Quantity:Price:$61.90Subtotal: -
COMETIC Cylinder Head Gasket C10167-045
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...09345926- SKU:
- 09345926
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
- BORE SIZE:
- 4,145'
- TYPE:
- CYLINDER HEAD
- MATERIAL:
- LAYERED STEEL
- MATERIAL:
- VITON
- THICKNESS IMPERIAL:
- 0,045'
- THICKNESS METRIC:
- 1.14 MM
- BORE SIZE IMPERIAL:
- 4.145'
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- STREET
- UNITS:
- 2 PACK
$61.90Qty in Cart: 0Quantity:Price:$61.90Subtotal: -
COMETIC Cylinder Head/Base Gasket Pair C10167-HB-030
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.09345927- SKU:
- 09345927
- Availability:
- Ships Same Business Day
- Weight:
- 0.55 LBS
- THICKNESS:
- 0,76 MM (0,030')
- THICKNESS IMPERIAL:
- 0,030'
- UNITS:
- 2 PACK
- MATERIAL:
- LAYERED STEEL
- MATERIAL:
- VITON
- BORE SIZE IMPERIAL:
- 4.145'
- RIDING STYLE:
- STREET
- BORE SIZE:
- 4,145'
- PRODUCT NAME:
- GASKET
- THICKNESS METRIC:
- 0.76 MM
- TYPE:
- CYLINDER BASE
- TYPE:
- CYLINDER HEAD
$81.85 -
COMETIC Cylinder Head Gasket C10168
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...09345928- SKU:
- 09345928
- Availability:
- Ships Same Business Day
- Weight:
- 0.40 LBS
- THICKNESS IMPERIAL:
- 0,040'
- THICKNESS METRIC:
- 1.02 MM
- UNITS:
- 2 PACK
- BORE SIZE IMPERIAL:
- 4.205'
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- STREET
- BORE SIZE:
- 4,205'
- MATERIAL:
- LAYERED STEEL
- MATERIAL:
- VITON
- TYPE:
- CYLINDER HEAD
$61.90Qty in Cart: 0Quantity:Price:$61.90Subtotal: -
COMETIC Cylinder Head Gasket C10168-030
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...09345929- SKU:
- 09345929
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- THICKNESS IMPERIAL:
- 0,030'
- UNITS:
- 2 PACK
- BORE SIZE IMPERIAL:
- 4.205'
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- STREET
- THICKNESS METRIC:
- 0.76 MM
- TYPE:
- CYLINDER HEAD
- BORE SIZE:
- 4,205'
- MATERIAL:
- LAYERED STEEL
- MATERIAL:
- VITON
$61.90Qty in Cart: 0Quantity:Price:$61.90Subtotal:
