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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JAMES GASKET Top End Gasket Kit - 88" 17054-99
JAMES GASKET
$125.95Top-quality gaskets, oil seals and O-rings necessary to rebuild an engine, Made in the U.S.A.20112101- SKU:
- 20112101
- Availability:
- Ships Same Business Day
- Weight:
- 0.70 LBS
- UNITS:
- KIT
- BORE SIZE IMPERIAL:
- 3.750'
- THICKNESS IMPERIAL:
- 0,036'
- THICKNESS METRIC:
- 0.91 MM
- TYPE:
- TOP END
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- STREET
$125.95 -
JAMES GASKET Top End Gasket Kit - 95" 17054-99-X
JAMES GASKET
$125.95Top-quality gaskets, oil seals and O-rings necessary to rebuild an engine, Made in the U.S.A.20112100- SKU:
- 20112100
- Availability:
- Ships Same Business Day
- Weight:
- 0.70 LBS
- RIDING STYLE:
- STREET
- TYPE:
- TOP END
- BORE SIZE IMPERIAL:
- 3.875'
- THICKNESS IMPERIAL:
- 0,036'
- THICKNESS METRIC:
- 0.91 MM
- PRODUCT NAME:
- GASKET KIT
- UNITS:
- KIT
$125.95 -
JAMES GASKET Motor Gasket Kit - 95" 17055-99-X
JAMES GASKET
$130.95Contain gaskets, oil seals and O-rings necessary to completely rebuild a Panhead engine, Made in the U.S.A.20112099- SKU:
- 20112099
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
- TYPE:
- COMPLETE
- TYPE:
- MOTOR
- UNITS:
- KIT
- BORE SIZE IMPERIAL:
- 3.875'
- RIDING STYLE:
- STREET
- THICKNESS IMPERIAL:
- 0,036'
- PRODUCT NAME:
- GASKET KIT
- THICKNESS METRIC:
- 0.91 MM
$130.95 -
On Sale
COMETIC Transmission Top Cover Gasket C9267F
COMETIC
Now: $17.00Was: $18.60Aluminum 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., Made in the U.S.A.09350220- SKU:
- 09350220
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- RIDING STYLE:
- STREET
- MATERIAL:
- AFM (ALUMINUM FOAM MATERIAL)
- PRODUCT NAME:
- GASKET
- UNITS:
- 10 PACK
- TYPE:
- TRANSMISSION TOP COVER
Now: $17.00Was: $18.60 -
On Sale
COMETIC Oil Pan Gasket - AFM 10 C9490F
COMETIC
Now: $32.00Was: $33.70Aluminum 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.09350217- SKU:
- 09350217
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- RIDING STYLE:
- STREET
- THICKNESS IMPERIAL:
- 0.032'
- TYPE:
- TRANSMISSION
- MATERIAL:
- AFM (ALUMINUM FOAM MATERIAL)
- PRODUCT NAME:
- GASKET
- TYPE:
- OIL PAN
- UNITS:
- 10 PACK
Now: $32.00Was: $33.70 -
On Sale
COMETIC Solenoid Mount Foam Gasket C9702
COMETIC
Now: $6.00Was: $6.30Aluminum 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.09350183- SKU:
- 09350183
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- PRODUCT NAME:
- GASKET
- UNITS:
- 10 PACK
- MATERIAL:
- FOAM
- THICKNESS IMPERIAL:
- 0.019'
- TYPE:
- STARTER
- THICKNESS:
- 0,019'
- RIDING STYLE:
- STREET
- TYPE:
- SOLENOID
Now: $6.00Was: $6.30 -
JAMES GASKET Inspection Cover Gasket - XL 34986-04
JAMES GASKET
$9.10Latest 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,...09350109- SKU:
- 09350109
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- GASKET
- MATERIAL:
- RUBBER
- TYPE:
- INSPECTION COVER
- UNITS:
- 5 PACK
$9.10 -
JAMES GASKET Speedo Gear Seal 67096-87
JAMES GASKET
$10.95OEM replacement speedometer drive gear seal.09346502- SKU:
- 09346502
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- PRODUCT NAME:
- SEAL
- UNITS:
- 10 PACK
- TYPE:
- SPEEDOMETER DRIVE
- RIDING STYLE:
- STREET
$10.95 -
JAMES GASKET Exhaust Gasket 65927-00
JAMES GASKET
$13.95Made in the U.S.A. by James Gaskets09346501- SKU:
- 09346501
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- STREET
- TYPE:
- EXHAUST
- UNITS:
- 2 PACK
$13.95 -
JAMES GASKET Exhaust Gasket 65324-83-CG-2
JAMES GASKET
$8.95Made in the U.S.A. by James Gaskets09346498- SKU:
- 09346498
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- PRODUCT NAME:
- GASKET
- UNITS:
- PAIR
- RIDING STYLE:
- STREET
- TYPE:
- EXHAUST
$8.95 -
JAMES GASKET Exhaust Gasket 65324-83-2
JAMES GASKET
$12.95Made in the U.S.A. by James Gaskets09346497- SKU:
- 09346497
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- RIDING STYLE:
- STREET
- TYPE:
- EXHAUST
- PRODUCT NAME:
- GASKET
- UNITS:
- PAIR
$12.95 -
On Sale
COMETIC Complete Engine/Primary Gasket Set C10271
COMETIC
MSRP: $340.15Now: $320.00Was: $340.15Multi-layer steel head gaskets. Steel Viton-coated base gaskets. Blue Viton valve stem seals., Aluminum foam material race-style exhaust gaskets., Made in the U.S.A.09346332- SKU:
- 09346332
- Availability:
- Ships Same Business Day
- Weight:
- 1.16 LBS
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- GASKET
- UNITS:
- KIT
- BORE SIZE:
- 4,075'
- TYPE:
- COMPLETE
MSRP: $340.15Now: $320.00Was: $340.15Qty in Cart: 0Quantity:Price:MSRP: $340.15Now: $320.00Was: $340.15Subtotal: -
On Sale
COMETIC Complete Engine/Primary Gasket Set C10266
COMETIC
MSRP: $340.15Now: $320.00Was: $340.15Multi-layer steel head gaskets. Steel Viton-coated base gaskets. Blue Viton valve stem seals., Aluminum foam material race-style exhaust gaskets., Made in the U.S.A.09346330- SKU:
- 09346330
- Availability:
- Ships Same Business Day
- Weight:
- 1.86 LBS
- TYPE:
- COMPLETE
- UNITS:
- KIT
- RIDING STYLE:
- STREET
- BORE SIZE:
- 4,250'
- PRODUCT NAME:
- GASKET
MSRP: $340.15Now: $320.00Was: $340.15 -
On Sale
COMETIC Complete Engine/Primary Gasket Set C10260
COMETIC
MSRP: $330.70Now: $311.00Was: $330.70Multi-layer steel head gaskets. Steel Viton-coated base gaskets. Blue Viton valve stem seals., Aluminum foam material race-style exhaust gaskets., Made in the U.S.A.09346329- SKU:
- 09346329
- Availability:
- Ships Same Business Day
- Weight:
- 1.91 LBS
- TYPE:
- COMPLETE
- UNITS:
- KIT
- BORE SIZE:
- 3,937'
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- GASKET
MSRP: $330.70Now: $311.00Was: $330.70 -
On Sale
COMETIC Primary Gasket C10241F5
COMETIC
Now: $113.00Was: $120.50COMETIC Primary Gasket09346321- SKU:
- 09346321
- Availability:
- Ships Same Business Day
- Weight:
- 0.46 LBS
- THICKNESS METRIC:
- 0.81 MM
- MOUNTING POSITION:
- OUTER
- MATERIAL:
- AFM (ALUMINUM FOAM MATERIAL)
- PRODUCT NAME:
- GASKET
- THICKNESS:
- 0,81 MM (0,032')
- UNITS:
- 5 PACK
- RIDING STYLE:
- STREET
- THICKNESS IMPERIAL:
- 0.032'
- TYPE:
- PRIMARY
Now: $113.00Was: $120.50 -
On Sale
COMETIC Base Gasket C10242
COMETIC
MSRP: $33.55Now: $32.00Was: $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...09346319- SKU:
- 09346319
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- MODEL:
- HI-PERFORMANCE
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- STREET
- TYPE:
- CYLINDER BASE
- UNITS:
- KIT
MSRP: $33.55Now: $32.00Was: $33.55 -
On Sale
COMETIC Intake/Manifold Gasket - M8 C10247
COMETIC
MSRP: $41.95Now: $39.00Was: $41.95Gaskets and gasket sets used by professionals in high-performance machines and as OE replacements worldwide, Intake gasket kits are made using either a .020” thick aramid fiber material or an AFM material that is comprised of a compounded nitrile...09346317- SKU:
- 09346317
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- UNITS:
- KIT
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- GASKET
- TYPE:
- INTAKE MANIFOLD
MSRP: $41.95Now: $39.00Was: $41.95 -
On Sale
COMETIC Lower Rocker Box Gaskets C10183
COMETIC
MSRP: $27.25Now: $26.00Was: $27.25Viton gaskets feature a stainless steel core with a .001"-thick coating of Viton rubber on both sides., Made in the U.S.A.09345950- SKU:
- 09345950
- Availability:
- Ships Same Business Day
- Weight:
- 0.21 LBS
- UNITS:
- 2 PACK
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- STREET
- TYPE:
- ROCKER BOX
- MATERIAL:
- RUBBER
- MOUNTING POSITION:
- LOWER
MSRP: $27.25Now: $26.00Was: $27.25 -
On Sale
COMETIC Cylinder Head Gasket C10182
COMETIC
MSRP: $61.90Now: $58.00Was: $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...09345948- SKU:
- 09345948
- Availability:
- Ships Same Business Day
- Weight:
- 0.41 LBS
- BORE SIZE:
- 4,320'
- BORE SIZE IMPERIAL:
- 4.320'
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- STREET
- MATERIAL:
- LAYERED STEEL
- UNITS:
- 2 PACK
- THICKNESS IMPERIAL:
- 0,040'
- TYPE:
- CYLINDER HEAD
- THICKNESS METRIC:
- 1.02 MM
MSRP: $61.90Now: $58.00Was: $61.90 -
On Sale
COMETIC Cylinder Head/Base Gasket C10181HB030020
COMETIC
MSRP: $78.70Now: $74.00Was: $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.09345947- SKU:
- 09345947
- Availability:
- Ships Same Business Day
- Weight:
- 0.31 LBS
- THICKNESS:
- 0,76 MM (0,030')
- BORE SIZE:
- 4,250'
- BORE SIZE IMPERIAL:
- 4.250'
- THICKNESS IMPERIAL:
- 0,020'
- THICKNESS IMPERIAL:
- 0,030'
- THICKNESS METRIC:
- 0.51 MM
- THICKNESS METRIC:
- 0.76 MM
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- STREET
- MATERIAL:
- LAYERED STEEL
- THICKNESS:
- 0,51 MM (0,020')
- TYPE:
- CYLINDER BASE
- TYPE:
- CYLINDER HEAD
- UNITS:
- KIT
MSRP: $78.70Now: $74.00Was: $78.70
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.
