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 Cylinder Head/Base Gasket C10181HB030014
COMETIC
$78.70Kits 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.09345946- SKU:
- 09345946
- Availability:
- Ships Same Business Day
- Weight:
- 0.41 LBS
- BORE SIZE:
- 4,250'
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- STREET
- THICKNESS IMPERIAL:
- 0,014'
- BORE SIZE IMPERIAL:
- 4.250'
- THICKNESS:
- 0,76 MM (0,030')
- THICKNESS IMPERIAL:
- 0,030'
- THICKNESS METRIC:
- 0.76 MM
- MATERIAL:
- LAYERED STEEL
- THICKNESS:
- 0,36 MM (0,014')
- THICKNESS METRIC:
- 0.36 MM
- TYPE:
- CYLINDER BASE
- TYPE:
- CYLINDER HEAD
- UNITS:
- KIT
$78.70 -
COMETIC Cylinder Head Gasket C10181-030
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...09345944- SKU:
- 09345944
- Availability:
- Ships Same Business Day
- Weight:
- 0.36 LBS
- THICKNESS IMPERIAL:
- 0,030'
- PRODUCT NAME:
- GASKET
- THICKNESS METRIC:
- 0.76 MM
- TYPE:
- CYLINDER HEAD
- BORE SIZE:
- 4,250'
- BORE SIZE IMPERIAL:
- 4.250'
- MATERIAL:
- LAYERED STEEL
- RIDING STYLE:
- STREET
- UNITS:
- 2 PACK
$61.90 -
COMETIC Cylinder Head Gasket C10181
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...09345943- SKU:
- 09345943
- Availability:
- Ships Same Business Day
- Weight:
- 0.26 LBS
- UNITS:
- 2 PACK
- BORE SIZE:
- 4,250'
- BORE SIZE IMPERIAL:
- 4.250'
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- STREET
- THICKNESS IMPERIAL:
- 0,040'
- TYPE:
- CYLINDER HEAD
- MATERIAL:
- LAYERED STEEL
- THICKNESS METRIC:
- 1.02 MM
$61.90 -
COMETIC Cam Change Gasket Kit C10178
COMETIC
$39.85Components 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.09345940- SKU:
- 09345940
- Availability:
- Ships Same Business Day
- Weight:
- 0.21 LBS
- FEATURES:
- WITHOUT ROCKER COVER
- PRODUCT NAME:
- GASKET KIT
- TYPE:
- CAM CHANGE
- UNITS:
- KIT
- RIDING STYLE:
- STREET
$39.85 -
COMETIC Cylinder Base Gasket Pair C10177-010
COMETIC
$33.55Center 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...09345938- SKU:
- 09345938
- Availability:
- Ships Same Business Day
- Weight:
- 0.16 LBS
- MATERIAL:
- STEEL
- UNITS:
- 2 PACK
- MATERIAL:
- VITON
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- STREET
- THICKNESS METRIC:
- 0.25 MM
- THICKNESS IMPERIAL:
- 0,010'
- TYPE:
- CYLINDER BASE
$33.55 -
COMETIC Cylinder Head/Base Gasket Pair C10166-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.09345922- SKU:
- 09345922
- Availability:
- Ships Same Business Day
- Weight:
- 0.35 LBS
- MATERIAL:
- LAYERED STEEL
- UNITS:
- 2 PACK
- BORE SIZE:
- 4,095'
- BORE SIZE IMPERIAL:
- 4.095'
- THICKNESS:
- 0,76 MM (0,030')
- THICKNESS IMPERIAL:
- 0,030'
- THICKNESS METRIC:
- 0.76 MM
- TYPE:
- CYLINDER HEAD
- PRODUCT NAME:
- GASKET
- TYPE:
- CYLINDER BASE
- MATERIAL:
- VITON
- RIDING STYLE:
- STREET
$81.85 -
COMETIC Cylinder Head Gasket C10166-030
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...09345921- SKU:
- 09345921
- Availability:
- Ships Same Business Day
- Weight:
- 0.36 LBS
- MATERIAL:
- VITON
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- STREET
- BORE SIZE:
- 4,075'
- THICKNESS IMPERIAL:
- 0,030'
- UNITS:
- 2 PACK
- BORE SIZE IMPERIAL:
- 4.075'
- MATERIAL:
- LAYERED STEEL
- THICKNESS METRIC:
- 0.76 MM
- TYPE:
- CYLINDER HEAD
$61.90Qty in Cart: 0Quantity:Price:$61.90Subtotal: -
COMETIC Cylinder Head Gasket C10166
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...09345920- SKU:
- 09345920
- Availability:
- Ships Same Business Day
- Weight:
- 0.40 LBS
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- STREET
- THICKNESS IMPERIAL:
- 0,040'
- THICKNESS METRIC:
- 1.02 MM
- UNITS:
- 2 PACK
- BORE SIZE:
- 4,095'
- BORE SIZE IMPERIAL:
- 4.095'
- TYPE:
- CYLINDER HEAD
- MATERIAL:
- LAYERED STEEL
- MATERIAL:
- VITON
$61.90 -
COMETIC Cylinder Head Gasket C10165-030
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...09345919- SKU:
- 09345919
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- PRODUCT NAME:
- GASKET
- THICKNESS METRIC:
- 0.76 MM
- BORE SIZE IMPERIAL:
- 4.000'
- THICKNESS IMPERIAL:
- 0,030'
- UNITS:
- 2 PACK
- BORE SIZE:
- 4,000'
- TYPE:
- CYLINDER HEAD
- MATERIAL:
- LAYERED STEEL
- MATERIAL:
- VITON
- RIDING STYLE:
- OFF-ROAD
$61.90 -
COMETIC Cylinder Head Gasket C10164
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...09345915- SKU:
- 09345915
- Availability:
- Ships Same Business Day
- Weight:
- 0.46 LBS
- BORE SIZE:
- 3,937'
- BORE SIZE IMPERIAL:
- 3.937'
- MATERIAL:
- VITON
- MATERIAL:
- LAYERED STEEL
- TYPE:
- CYLINDER HEAD
- THICKNESS IMPERIAL:
- 0,040'
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- STREET
- THICKNESS METRIC:
- 1.02 MM
- UNITS:
- 2 PACK
$61.90Qty in Cart: 0Quantity:Price:$61.90Subtotal: -
JAMES GASKET Head Gasket - FL JGI-16770-66SXK
JAMES GASKET
$86.95Made in the U.S.A.09345877- SKU:
- 09345877
- Availability:
- Ships Same Business Day
- Weight:
- 0.16 LBS
- STYLE:
- STANDARD BORE
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- STREET
- THICKNESS METRIC:
- 0.81 MM
- MATERIAL:
- -
- THICKNESS IMPERIAL:
- 0,032'
- BORE SIZE IMPERIAL:
- -
- TYPE:
- CYLINDER BASE
- TYPE:
- CYLINDER HEAD
- UNITS:
- PAIR
$86.95 -
JAMES GASKET Foamet‚® Head Gasket JGI-16770-66-SX
JAMES GASKET
$34.95JAMES GASKET Foamet® Head Gasket09345876- SKU:
- 09345876
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- STREET
- UNITS:
- PAIR
- MATERIAL:
- FOAMET
$34.95 -
CUSTOM DYNAMICS Squareback Taillight Gasket TLGASKET-5PK
CUSTOM DYNAMICS
$15.80Replaces the stock taillight gasket on all 1999-2020 Harley-Davidson® models equipped with a OEM Squareback Tail Light09345866- SKU:
- 09345866
- Availability:
- Ships Same Business Day
- Weight:
- 0.21 LBS
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- STREET
- UNITS:
- 5 PACK
$15.80 -
COMETIC Derby Gasket C10140F5
COMETIC
$21.30Derby cover gasket for Harley Davidson models09345060- SKU:
- 09345060
- Availability:
- Ships Same Business Day
- Weight:
- 0.26 LBS
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- STREET
- TYPE:
- DERBY COVER
- UNITS:
- 5 PACK
$21.30 -
COMETIC Complete Gasket Kit - Buell C10142
COMETIC
$288.70Every 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,...09345058- SKU:
- 09345058
- Availability:
- Ships Same Business Day
- Weight:
- 1.85 LBS
- BORE SIZE IMPERIAL:
- STANDARD
- MATERIAL:
- AFM (ALUMINUM FOAM MATERIAL)
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- MATERIAL:
- STEEL
- BORE SIZE:
- STANDARD
- MATERIAL:
- FOAM
- TYPE:
- COMPLETE
- UNITS:
- KIT
$288.70Qty in Cart: 0Quantity:Price:$288.70Subtotal: -
COMETIC Push Rod Gasket Kit - XL C10133
COMETIC
$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
$19.90 -
COMETIC Complete Gasket Kit - 110" C10128-040
COMETIC
$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
$169.00 -
COMETIC Complete Gasket Kit - 110" C10128
COMETIC
$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'
$169.00 -
COMETIC Base Seal Gasket C10127
COMETIC
$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
$10.95 -
COMETIC Primary Gasket Kit C9125
COMETIC
$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
$43.00
