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 Oil Pump Rebuild Gasket C9168
COMETIC
$28.30Includes correct amount of gaskets, seal, O-rings, retaining rings and keys for one application, Meets or exceeds OEM quality, Premium vulcanized rubber impregnated fiber for long, leak free usage, Made in the U.S.A.09341218- SKU:
- 09341218
- Availability:
- Ships Same Business Day
- Weight:
- 0.07 LBS
- RIDING STYLE:
- STREET
- TYPE:
- OIL PUMP
- PRODUCT NAME:
- GASKET KIT
- UNITS:
- KIT
$28.30 -
COMETIC Complete Gasket Kit - 3-5/8" C9164
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,...09341216- SKU:
- 09341216
- Availability:
- Ships Same Business Day
- Weight:
- 1.70 LBS
- BORE SIZE IMPERIAL:
- 3.625'
- MATERIAL:
- STEEL
- TYPE:
- COMPLETE
- BORE SIZE:
- 3,625'
- MATERIAL:
- AFM (ALUMINUM FOAM MATERIAL)
- PRODUCT NAME:
- GASKET KIT
- UNITS:
- KIT
- MATERIAL:
- VITON
- RIDING STYLE:
- STREET
$356.95 -
COMETIC Complete Gasket Kit - Twin Cam - .030" C9161
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,...09341215- SKU:
- 09341215
- Availability:
- Ships Same Business Day
- Weight:
- 1.70 LBS
- BORE SIZE:
- 3,875'
- TYPE:
- COMPLETE
- THICKNESS IMPERIAL:
- 0,030'
- MATERIAL:
- AFM (ALUMINUM FOAM MATERIAL)
- MATERIAL:
- STEEL
- PRODUCT NAME:
- GASKET KIT
- UNITS:
- KIT
- BORE SIZE IMPERIAL:
- 3.875'
- MATERIAL:
- VITON
- RIDING STYLE:
- STREET
- THICKNESS METRIC:
- 0.76 MM
$209.95 -
JAMES GASKET Cam Cover Gasket - XL 25263-86-X
JAMES GASKET
$37.30Replacement gaskets for cam chests09341185- SKU:
- 09341185
- Availability:
- Ships Same Business Day
- Weight:
- 0.12 LBS
- RIDING STYLE:
- STREET
- MATERIAL:
- PAPER
- PRODUCT NAME:
- GASKET
- TYPE:
- CAM COVER
- FEATURES:
- BEADED
- MATERIAL:
- SILICONE
- UNITS:
- 5 PACK
$37.30 -
JAMES GASKET Cam Cover Gasket - Big Twin 25225-36-CX
JAMES GASKET
$21.10Replacement gaskets for cam chests09341184- SKU:
- 09341184
- Availability:
- Ships Same Business Day
- Weight:
- 0.12 LBS
- MATERIAL:
- PAPER
- UNITS:
- 5 PACK
- FEATURES:
- BEADED
- RIDING STYLE:
- STREET
- THICKNESS IMPERIAL:
- 0,020'
- THICKNESS:
- 0,51 MM (0,020')
- THICKNESS METRIC:
- 0.51 MM
- TYPE:
- CAM COVER
- PRODUCT NAME:
- GASKET
$21.10 -
COMETIC Base Gasket - 3-5/8" - .010" C9532
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...09340780- SKU:
- 09340780
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- PRODUCT NAME:
- GASKET
- STYLE:
- STANDARD
- MATERIAL:
- STEEL
- THICKNESS METRIC:
- 0.25 MM
- TYPE:
- CYLINDER BASE
- UNITS:
- PAIR
- BORE SIZE IMPERIAL:
- 3.625'
- RIDING STYLE:
- STREET
- THICKNESS:
- 0,25 MM (0,010')
- THICKNESS IMPERIAL:
- 0,010'
$33.55 -
COMETIC Base Gasket - Twin Cam 4" - .020" C9738
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...09340776- SKU:
- 09340776
- Availability:
- Ships Same Business Day
- Weight:
- 0.09 LBS
- BORE SIZE IMPERIAL:
- 4.000'
- RIDING STYLE:
- STREET
- THICKNESS IMPERIAL:
- 0,020'
- STYLE:
- STANDARD
- THICKNESS METRIC:
- 0.51 MM
- PRODUCT NAME:
- GASKET
- MATERIAL:
- STEEL
- THICKNESS:
- 0,51 MM (0,020')
- TYPE:
- CYLINDER BASE
- UNITS:
- PAIR
$33.55 -
COMETIC Top End Gasket - Standard - .030" C9845
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...09340771- SKU:
- 09340771
- Availability:
- Ships Same Business Day
- Weight:
- 0.83 LBS
- BORE SIZE:
- 3,750'
- DISPLACEMENT:
- 88'
- ENGINE TYPE:
- 4-STROKE
- MATERIAL:
- STAINLESS STEEL
- PRODUCT NAME:
- GASKET KIT
- THICKNESS IMPERIAL:
- 0,030'
- RIDING STYLE:
- STREET
- TYPE:
- TOP END
- MATERIAL:
- RUBBER
- UNITS:
- KIT
- BORE SIZE IMPERIAL:
- 3.750'
- THICKNESS METRIC:
- 0.76 MM
$150.10 -
COMETIC Top End Gasket - FL/FLH C9968
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...09340770- SKU:
- 09340770
- Availability:
- Ships Same Business Day
- Weight:
- 0.61 LBS
- MATERIAL:
- ALUMINUM
- MATERIAL:
- VITON
- BORE SIZE IMPERIAL:
- 3.437'
- MATERIAL:
- FOAM
- RIDING STYLE:
- STREET
- TYPE:
- TOP END
- ENGINE TYPE:
- 4-STROKE
- MATERIAL:
- STEEL
- PRODUCT NAME:
- GASKET KIT
- BORE SIZE:
- 3,437'
- UNITS:
- KIT
$135.40 -
JAMES GASKET Gasket Kit - Flathead 17027-36
JAMES GASKET
$90.95Contain gaskets, oil seals and O-rings necessary to completely rebuild a Panhead engine, Made in the U.S.A.09340546- SKU:
- 09340546
- Availability:
- Ships Same Business Day
- Weight:
- 0.56 LBS
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- GASKET KIT
- TYPE:
- COMPLETE
- TYPE:
- MOTOR
- UNITS:
- KIT
$90.95 -
JAMES GASKET Carb Back Plate Gasket 29583-01
JAMES GASKET
$15.30Made in the U.S.A.09340324- SKU:
- 09340324
- Availability:
- Ships Same Business Day
- Weight:
- 0.09 LBS
- MATERIAL:
- PAPER
- RIDING STYLE:
- STREET
- THICKNESS METRIC:
- 1.52 MM
- MOUNTING POSITION:
- CARBURETOR/THROTTLE BODY TO BACK PLATE
- STYLE:
- CARBURETOR
- THICKNESS:
- 1,52 MM (0,060')
- TYPE:
- BACKPLATE
- PRODUCT NAME:
- GASKET
- THICKNESS IMPERIAL:
- 0.060'
- UNITS:
- 10 PACK
$15.30 -
JAMES GASKET Derby Cover Paper Gasket 25416-99-X
JAMES GASKET
$36.80Latest additions to our line of high-quality genuine James gaskets, seals and O-rings, Cover seals are a seal, not a gasket, Cover seals are molded rubber, beaded oil seals with metal inserts and work with all inspection and derby covers; fit billet,...09340289- SKU:
- 09340289
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- MATERIAL:
- PAPER
- RIDING STYLE:
- STREET
- FEATURES:
- BEADED
- MATERIAL:
- SILICONE
- PRODUCT NAME:
- GASKET
- STYLE:
- PRIMARY
- THICKNESS:
- 0,80 MM (0,030')
- THICKNESS IMPERIAL:
- 0,030'
- THICKNESS METRIC:
- 0.80 MM
- UNITS:
- 5 PACK
- TYPE:
- DERBY COVER
$36.80 -
JAMES GASKET Primary Gasket 34955-04
JAMES GASKET
$95.70Top quality gaskets, seals and o-rings meet or exceed OEM specifications, Primary gasket features silicone beading, Made in the U.S.A.09340288- SKU:
- 09340288
- Availability:
- Ships Same Business Day
- Weight:
- 0.34 LBS
- MATERIAL:
- SILICONE
- PRODUCT NAME:
- GASKET
- STYLE:
- PRIMARY
- UNITS:
- 5 PACK
- FEATURES:
- BEADED
- MATERIAL:
- PAPER
- THICKNESS METRIC:
- 0.79 MM
- TYPE:
- COVER
- RIDING STYLE:
- STREET
- THICKNESS IMPERIAL:
- 0,031'
$95.70 -
DRAG SPECIALTIES Gasket Board - Big Twin 0934-0274
DRAG SPECIALTIES
$124.58Complete four-color display features every gasket, seal and O-ring necessary to rebuild any motor, Displays are 20 mil flexible vinyl and come with all necessary hooks and clamshells, Mounts easily on any 1/8" or 1/4" pegboard, Display is designed so...09340274- SKU:
- 09340274
- Availability:
- Ships Same Business Day
- Weight:
- 5.30 LBS
- TYPE:
- GASKET
- PRODUCT NAME:
- DISPLAY BOARD
- UNITS:
- EACH
- RIDING STYLE:
- STREET
$124.58 -
JAMES GASKET Head Gasket - XL883 16664-86
JAMES GASKET
$48.30Made in the U.S.A.09340260- SKU:
- 09340260
- Availability:
- Ships Same Business Day
- Weight:
- 0.36 LBS
- RIDING STYLE:
- STREET
- MATERIAL:
- -
- THICKNESS IMPERIAL:
- 0,045'
- UNITS:
- 5 PACK
- BORE SIZE:
- -
- BORE SIZE IMPERIAL:
- -
- THICKNESS METRIC:
- 1.14 MM
- TYPE:
- CYLINDER HEAD
- PRODUCT NAME:
- GASKET
$48.30 -
JAMES GASKET Oil Pan Gasket - Twin Cam 26077-99
JAMES GASKET
$33.90Made in the U.S.A.09342877- SKU:
- 09342877
- Availability:
- Ships Same Business Day
- Weight:
- 0.21 LBS
- PRODUCT NAME:
- GASKET
- TYPE:
- OIL PAN
- UNITS:
- 5 PACK
- RIDING STYLE:
- STREET
- TYPE:
- TRANSMISSION
$33.90 -
JAMES GASKET Oil Deflector Seal Kit 60518-65-DLK
JAMES GASKET
$25.94Made in the U.S.A.09342119- SKU:
- 09342119
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- STREET
- TYPE:
- STARTER HOUSING
- TYPE:
- SHIFT LEVER
$25.94 -
JAMES GASKET Oil Pump Gasket MET Kit - Big Twin 92-FLHR
JAMES GASKET
$17.95Comes with new components that allow you to totally rebuild/rebush most oil pumps, Made in the U.S.A.DS173382- SKU:
- DS173382
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- STREET
- TYPE:
- OIL PUMP
$17.95 -
JAMES GASKET Oil Pump Gasket - XL 26495-89
JAMES GASKET
$9.60Made in the U.S.A.DS174876- SKU:
- DS174876
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- PRODUCT NAME:
- GASKET
- STYLE:
- MOUNT
- TYPE:
- OIL PUMP
- UNITS:
- 10 PACK
- MATERIAL:
- PAPER
- RIDING STYLE:
- STREET
$9.60 -
JAMES GASKET Oil Pan Gasket - FXD 26072-90
JAMES GASKET
$35.10Made in the U.S.A.DS174877- SKU:
- DS174877
- Availability:
- Ships Same Business Day
- Weight:
- 0.19 LBS
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- GASKET
- TYPE:
- OIL PAN
- UNITS:
- 10 PACK
- DISPLACEMENT:
- 1340 CC
$35.10
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.
