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 Rocker Cover Gaskets - .043" C10008
COMETIC
$30.40Viton gaskets feature a stainless steel core with a .001"-thick coating of Viton rubber on both sides., Made in the U.S.A.09344646- SKU:
- 09344646
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- THICKNESS METRIC:
- 1.09 MM
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- STREET
- THICKNESS:
- 1,09 MM (0,043')
- UNITS:
- PAIR
- MATERIAL:
- GALVANIZED STEEL
- THICKNESS IMPERIAL:
- 0,043'
- TYPE:
- ROCKER COVER
$30.40 -
COMETIC Rocker Cover Gasket - Big Twin C10008-10
COMETIC
$84.10Viton gaskets feature a stainless steel core with a .001"-thick coating of Viton rubber on both sides., Made in the U.S.A.09344647- SKU:
- 09344647
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
- THICKNESS IMPERIAL:
- 0,043'
- UNITS:
- 10 PACK
- MATERIAL:
- GALVANIZED STEEL
- PRODUCT NAME:
- GASKET
- THICKNESS:
- 1,09 MM (0,043')
- TYPE:
- ROCKER COVER
- RIDING STYLE:
- STREET
- THICKNESS METRIC:
- 1.09 MM
$84.10 -
COMETIC Primary Gasket C9145F5
COMETIC
$120.50COMETIC Primary Gasket09341341- SKU:
- 09341341
- Availability:
- Ships Same Business Day
- Weight:
- 0.55 LBS
- THICKNESS:
- 1,52 MM (0,060')
- PRODUCT NAME:
- GASKET
- THICKNESS IMPERIAL:
- 0.060'
- MATERIAL:
- AFM (ALUMINUM FOAM MATERIAL)
- MOUNTING POSITION:
- OUTER
- RIDING STYLE:
- STREET
- THICKNESS METRIC:
- 1.52 MM
- TYPE:
- PRIMARY
- UNITS:
- 5 PACK
$120.50 -
COMETIC Chain Cover Gasket - XL C9957
COMETIC
$18.40Aluminum 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.09340787- SKU:
- 09340787
- Availability:
- Ships Same Business Day
- Weight:
- 0.08 LBS
- RIDING STYLE:
- STREET
- THICKNESS METRIC:
- 1.52 MM
- UNITS:
- 5 PACK
- THICKNESS:
- 1,52 MM (0,060')
- TYPE:
- INSPECTION COVER
- MATERIAL:
- AFM (ALUMINUM FOAM MATERIAL)
- PRODUCT NAME:
- GASKET
- THICKNESS IMPERIAL:
- 0.060'
$18.40 -
COMETIC Top End Gasket - Standard - .030" C9850
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...09340819- SKU:
- 09340819
- Availability:
- Ships Same Business Day
- Weight:
- 0.79 LBS
- ENGINE TYPE:
- 4-STROKE
- MATERIAL:
- RUBBER
- MATERIAL:
- STAINLESS STEEL
- THICKNESS IMPERIAL:
- 0,030'
- TYPE:
- TOP END
- RIDING STYLE:
- STREET
- THICKNESS METRIC:
- 0.76 MM
- BORE SIZE:
- 3,500'
- BORE SIZE IMPERIAL:
- 3.500'
- PRODUCT NAME:
- GASKET KIT
- UNITS:
- KIT
$142.75 -
JAMES GASKET Chain Gasket 60540-36-K
JAMES GASKET
$42.95Top quality gaskets, seals and o-rings meet or exceed OEM specifications, Primary gasket features silicone beading, Made in the U.S.A.DS174968- SKU:
- DS174968
- Availability:
- Ships Same Business Day
- Weight:
- 0.19 LBS
- MATERIAL:
- SILICONE
- PRODUCT NAME:
- GASKET KIT
- MATERIAL:
- PAPER
- RIDING STYLE:
- STREET
- FEATURES:
- BEADED
- TYPE:
- PRIMARY COVER
- UNITS:
- KIT
$42.95 -
JAMES GASKET Lower Cover Gasket Cork - Big Twin 17355-84
JAMES GASKET
$18.60Made from a solid steel sheet coated on two sides with a high-temperature elastomer. Strategically placed elastomer beading helps ensure a positive seal while our clear silicone conformal coating fills in minor imperfections in the flanges and provides...DS174917- SKU:
- DS174917
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- UNITS:
- 5 PACK
- RIDING STYLE:
- STREET
- MATERIAL:
- CORK
- MOUNTING POSITION:
- LOWER
- PRODUCT NAME:
- GASKET
- TYPE:
- ROCKER BOX
$18.60Qty in Cart: 0Quantity:Price:$18.60Subtotal: -
JAMES GASKET Thick Fuel Cap Gasket 61111-77
JAMES GASKET
$16.50Made in the U.S.A.DS174516- SKU:
- DS174516
- Availability:
- Ships Same Business Day
- Weight:
- 0.19 LBS
- RIDING STYLE:
- STREET
- STYLE:
- THICK
- PRODUCT NAME:
- GASKET
- UNITS:
- 10 PACK
- TYPE:
- FUEL CAP
$16.50 -
JAMES GASKET Intake Manifold Gasket - Big Twin 27411-40
JAMES GASKET
$13.80Kits contain carb-to-intake seal and two intake-to-cylinder head sealsDS174490- SKU:
- DS174490
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- MATERIAL:
- PAPER
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- GASKET
- TYPE:
- INTAKE MANIFOLD
- UNITS:
- 10 PACK
$13.80 -
JAMES GASKET Upper Rocker Cover - XL 17354-86-A
JAMES GASKET
$42.80Made from a solid steel sheet coated on two sides with a high-temperature elastomer. Strategically placed elastomer beading helps ensure a positive seal while our clear silicone conformal coating fills in minor imperfections in the flanges and provides...DS174358- SKU:
- DS174358
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- UNITS:
- 5 PACK
- MATERIAL:
- RUBBER
- PRODUCT NAME:
- GASKET
- TYPE:
- ROCKER BOX
- RIDING STYLE:
- STREET
- MOUNTING POSITION:
- UPPER
$42.80Qty in Cart: 0Quantity:Price:$42.80Subtotal: -
JAMES GASKET Bendix Gasket Kit BENDIX
JAMES GASKET
$12.95OEM replacement for Bendix carbs. Gasket kit only.DS173528- SKU:
- DS173528
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- PRODUCT NAME:
- GASKET KIT
- MATERIAL:
- GRAPHITE
- RIDING STYLE:
- STREET
- TYPE:
- CARBURETOR
- UNITS:
- KIT
$12.95 -
JAMES GASKET Oil Pump Cover Gasket 26276-80-M
JAMES GASKET
$6.90JAMES GASKET Oil Pump Cover GasketDS173464- SKU:
- DS173464
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- MATERIAL:
- MYLAR
- STYLE:
- COVER
- PRODUCT NAME:
- GASKET
- TYPE:
- OIL PUMP
- UNITS:
- 10 PACK
- RIDING STYLE:
- STREET
$6.90Qty in Cart: 0Quantity:Price:$6.90Subtotal: -
COMETIC Rocker Gasket - EST - XL C9765
COMETIC
$65.05Premium materials used for specific applications to provide a long, service free life, Kits include all gaskets, seals, O-rings and quality bolt seals needed when servicing both rocker boxes, Made in the U.S.A.DS172077- SKU:
- DS172077
- Availability:
- Ships Same Business Day
- Weight:
- 0.31 LBS
- MODEL:
- EST
- MATERIAL:
- STEEL
- PRODUCT NAME:
- GASKET KIT
- UNITS:
- KIT
- RIDING STYLE:
- STREET
- TYPE:
- ROCKER BOX
$65.05 -
COMETIC Top End Gasket Kit - XL1200 - EST C9762
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...DS172074- SKU:
- DS172074
- Availability:
- Ships Same Business Day
- Weight:
- 0.63 LBS
- ENGINE TYPE:
- 4-STROKE
- PRODUCT NAME:
- GASKET KIT
- TYPE:
- TOP END
- BORE SIZE IMPERIAL:
- 3.500'
- RIDING STYLE:
- STREET
- UNITS:
- KIT
- BORE SIZE:
- 3,500'
- DISPLACEMENT:
- 1200 CC
- MATERIAL:
- RUBBER
- MATERIAL:
- STAINLESS STEEL
- THICKNESS IMPERIAL:
- 0,040'
- THICKNESS METRIC:
- 1.02 MM
$142.75Qty in Cart: 0Quantity:Price:$142.75Subtotal: -
COMETIC Rocker Gasket - EST - Big Twin C9752
COMETIC
$65.05Premium materials used for specific applications to provide a long, service free life, Kits include all gaskets, seals, O-rings and quality bolt seals needed when servicing both rocker boxes, Made in the U.S.A.DS172064- SKU:
- DS172064
- Availability:
- Ships Same Business Day
- Weight:
- 0.38 LBS
- MODEL:
- EST
- TYPE:
- ROCKER BOX
- MATERIAL:
- STEEL
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- STREET
- UNITS:
- KIT
$65.05 -
COMETIC Copper Base Gasket - Big Twin C9029
COMETIC
$28.30Cylinder base gasket for Sportster modelsDS172055- SKU:
- DS172055
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- MATERIAL:
- COPPER
- RIDING STYLE:
- STREET
- BORE SIZE IMPERIAL:
- STANDARD
- PRODUCT NAME:
- GASKET
- THICKNESS:
- 0,41 MM (0,016')
- THICKNESS IMPERIAL:
- 0.016'
- UNITS:
- PAIR
- TYPE:
- CYLINDER BASE
- THICKNESS METRIC:
- 0.41 MM
$28.30 -
COMETIC Tappet Cover Gasket - Twin Cam C9578
COMETIC
$5.40Made in the U.S.A.DS172047- SKU:
- DS172047
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- MOUNTING POSITION:
- FRONT
- MOUNTING POSITION:
- REAR
- THICKNESS METRIC:
- 0.51 MM
- PRODUCT NAME:
- GASKET
- THICKNESS:
- 0,51 MM (0,020')
- RIDING STYLE:
- STREET
- TYPE:
- TAPPET BLOCK
- MATERIAL:
- FIBER
- THICKNESS IMPERIAL:
- 0,020'
- UNITS:
- 10 PACK
$5.40 -
COMETIC Rocker Cover Gasket - .020" - Twin Cam C9577
COMETIC
$62.70Viton gaskets feature a stainless steel core with a .001"-thick coating of Viton rubber on both sides., Made in the U.S.A.DS172031- SKU:
- DS172031
- Availability:
- Ships Same Business Day
- Weight:
- 0.38 LBS
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- GASKET
- THICKNESS:
- 0,51 MM (0,020')
- THICKNESS IMPERIAL:
- 0,020'
- THICKNESS METRIC:
- 0.51 MM
- TYPE:
- ROCKER COVER
- MATERIAL:
- VITON
- UNITS:
- 10 PACK
$62.70 -
COMETIC Kiehin Manifold C9425
COMETIC
$5.30Made in the U.S.A.09350222- SKU:
- 09350222
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- MATERIAL:
- FIBER
- PRODUCT NAME:
- GASKET
- TYPE:
- INTAKE MANIFOLD
- UNITS:
- 10 PACK
- THICKNESS IMPERIAL:
- 0.031'
- RIDING STYLE:
- STREET
- THICKNESS:
- 0,031'
$5.30Qty in Cart: 0Quantity:Price:$5.30Subtotal: -
COMETIC Bendix Manifold Gasket C9417
COMETIC
$4.90Made in the U.S.A.09350221- SKU:
- 09350221
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- MATERIAL:
- FIBER
- PRODUCT NAME:
- GASKET
- THICKNESS IMPERIAL:
- 0.020'
- TYPE:
- INTAKE MANIFOLD
- UNITS:
- 10 PACK
- RIDING STYLE:
- STREET
- THICKNESS METRIC:
- 0.51 MM
- THICKNESS:
- 0,51 MM (0,020')
$4.90Qty in Cart: 0Quantity:Price:$4.90Subtotal:
