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
-
JAMES GASKET Cylinder Base Gasket - XL 16774-86
JAMES GASKET
$18.80Require no gasket sealer, Made in the U.S.A.DS174331- SKU:
- DS174331
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- DISPLACEMENT:
- 1200 CC
- DISPLACEMENT:
- 1100 CC
- PRODUCT NAME:
- GASKET
- TYPE:
- CYLINDER BASE
- MATERIAL:
- PAPER
- RIDING STYLE:
- STREET
- THICKNESS IMPERIAL:
- 0,020'
- THICKNESS METRIC:
- 0.51 MM
- UNITS:
- 10 PACK
$18.80 -
JAMES GASKET Valve Guide Gasket - Big Twin 18196-51
JAMES GASKET
$9.00Made in the U.S.A.DS174329- SKU:
- DS174329
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- RIDING STYLE:
- STREET
- TYPE:
- VALVE GUIDE
- UNITS:
- 20 PACK
- PRODUCT NAME:
- GASKET
$9.00 -
JAMES GASKET End Cover Gasket 36801-79
JAMES GASKET
$13.20Made in the U.S.A.DS174326- SKU:
- DS174326
- Availability:
- Ships Same Business Day
- Weight:
- 0.08 LBS
- TYPE:
- CLUTCH RELEASE
- MATERIAL:
- PAPER
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- GASKET
- UNITS:
- 10 PACK
$13.20 -
JAMES GASKET Inspection Cover Gasket - 5 Speed 34906-79
JAMES GASKET
$18.40Latest 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,...DS174325- SKU:
- DS174325
- Availability:
- Ships Same Business Day
- Weight:
- 0.08 LBS
- PRODUCT NAME:
- GASKET
- UNITS:
- 10 PACK
- MATERIAL:
- PAPER
- RIDING STYLE:
- STREET
- STYLE:
- PRIMARY
- THICKNESS:
- 0,80 MM (0,030')
- THICKNESS IMPERIAL:
- 0,030'
- THICKNESS METRIC:
- 0.80 MM
- TYPE:
- INSPECTION COVER
$18.40Qty in Cart: 0Quantity:Price:$18.40Subtotal: -
JAMES GASKET Primary Cover Gasket 34901-94
JAMES GASKET
$111.70Top quality gaskets, seals and o-rings meet or exceed OEM specifications, Primary gasket features silicone beading, Made in the U.S.A.DS174322- SKU:
- DS174322
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- MATERIAL:
- PAPER
- RIDING STYLE:
- STREET
- TYPE:
- COVER
- FEATURES:
- BEADED
- PRODUCT NAME:
- GASKET
- STYLE:
- PRIMARY
- THICKNESS IMPERIAL:
- 0,062'
- THICKNESS METRIC:
- 1.60 MM
- UNITS:
- 5 PACK
$111.70 -
JAMES GASKET Primary Cover Gasket - .062" 34901-79-A
JAMES GASKET
$57.50Top quality gaskets, seals and o-rings meet or exceed OEM specifications, Primary gasket features silicone beading, Made in the U.S.A.DS174321- SKU:
- DS174321
- Availability:
- Ships Same Business Day
- Weight:
- 0.31 LBS
- PRODUCT NAME:
- GASKET
- STYLE:
- PRIMARY
- THICKNESS IMPERIAL:
- 0,062'
- THICKNESS METRIC:
- 1.60 MM
- UNITS:
- 5 PACK
- FEATURES:
- BEADED
- MATERIAL:
- PAPER
- RIDING STYLE:
- STREET
- TYPE:
- COVER
$57.50 -
JAMES GASKET Primary Cover Gasket 60539-94
JAMES GASKET
$132.00Top quality gaskets, seals and o-rings meet or exceed OEM specifications, Primary gasket features silicone beading, Made in the U.S.A.DS174308- SKU:
- DS174308
- Availability:
- Ships Same Business Day
- Weight:
- 0.55 LBS
- FEATURES:
- BEADED
- RIDING STYLE:
- STREET
- STYLE:
- PRIMARY
- THICKNESS IMPERIAL:
- 0,062'
- THICKNESS METRIC:
- 1.60 MM
- MATERIAL:
- PAPER
- UNITS:
- 5 PACK
- MATERIAL:
- SILICONE
- PRODUCT NAME:
- GASKET
- TYPE:
- COVER
$132.00 -
JAMES GASKET Big Bore Base Gasket - Big Twin 16777-94-S
JAMES GASKET
$44.95Require no gasket sealer, Made in the U.S.A.DS174307- SKU:
- DS174307
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- MATERIAL:
- STEEL
- PRODUCT NAME:
- GASKET
- UNITS:
- PAIR
- RIDING STYLE:
- STREET
- FEATURES:
- BEADED
- THICKNESS IMPERIAL:
- 0,020'
- THICKNESS METRIC:
- 0.51 MM
- BORE SIZE IMPERIAL:
- 3.625'
- TYPE:
- CYLINDER BASE
$44.95 -
JAMES GASKET Inspection Cover Gasket 60567-65-B
JAMES GASKET
$31.50Latest 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,...DS174305- SKU:
- DS174305
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- MATERIAL:
- PAPER
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- STREET
- THICKNESS:
- 1,60 MM (0,062')
- THICKNESS METRIC:
- 1.60 MM
- TYPE:
- INSPECTION COVER
- UNITS:
- 5 PACK
- FEATURES:
- BEADED
- MATERIAL:
- SILICONE
- STYLE:
- PRIMARY
- THICKNESS IMPERIAL:
- 0,062'
$31.50 -
JAMES GASKET Rocker Box Rubber Gasket - XL 17030-91
JAMES GASKET
$68.95Made in the U.S.A.DS174304- SKU:
- DS174304
- Availability:
- Ships Same Business Day
- Weight:
- 0.19 LBS
- PRODUCT NAME:
- GASKET KIT
- UNITS:
- KIT
- RIDING STYLE:
- STREET
- TYPE:
- ROCKER BOX
$68.95 -
JAMES GASKET Point Cover Gasket 32591-70
JAMES GASKET
$7.10Replacement point cover gaskets for Shovelhead cam chestDS174240- SKU:
- DS174240
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- MATERIAL:
- PAPER
- PRODUCT NAME:
- GASKET
- TYPE:
- CIRCUIT BREAKER COVER
- RIDING STYLE:
- STREET
- UNITS:
- 10 PACK
$7.10 -
JAMES GASKET Solenoid Mount Gasket 60645-65
JAMES GASKET
$9.70Made in the U.S.A.DS174230- SKU:
- DS174230
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- FEATURES:
- INCLUDES ADHESIVE
- PRODUCT NAME:
- GASKET
- UNITS:
- 10 PACK
- RIDING STYLE:
- STREET
- TYPE:
- SOLENOID
- MOUNTING POSITION:
- INNER
- MATERIAL:
- FOAM
$9.70 -
JAMES GASKET Motor Gasket Kit - Twin Cam - 95" 17055-99
JAMES GASKET
$130.95Contain gaskets, oil seals and O-rings necessary to completely rebuild a Panhead engine, Made in the U.S.A.DS174204- SKU:
- DS174204
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- GASKET KIT
- THICKNESS METRIC:
- 1.17 MM
- TYPE:
- COMPLETE
- UNITS:
- KIT
- BORE SIZE IMPERIAL:
- 3.875'
- THICKNESS IMPERIAL:
- 0,046'
- TYPE:
- MOTOR
$130.95 -
JAMES GASKET 1 Piece Rocker Gasket - Evo 16779-99-X
JAMES GASKET
$37.95Made 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...DS174203- SKU:
- DS174203
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- MATERIAL:
- RUBBER
- MOUNTING POSITION:
- LOWER
- TYPE:
- ROCKER BOX
- FEATURES:
- BEADED
- RIDING STYLE:
- STREET
- MATERIAL:
- STEEL
- PRODUCT NAME:
- GASKET
- UNITS:
- PAIR
$37.95 -
JAMES GASKET Cam Cover Gasket Silicon - Big Twin 25225-93-X
JAMES GASKET
$26.00Replacement gaskets for cam chestsDS174202- SKU:
- DS174202
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- MATERIAL:
- PAPER
- RIDING STYLE:
- STREET
- TYPE:
- CAM COVER
- FEATURES:
- BEADED
- MATERIAL:
- SILICONE
- PRODUCT NAME:
- GASKET
- UNITS:
- 5 PACK
$26.00 -
JAMES GASKET Cam Cover Gasket Silicon - Big Twin 25225-70-X
JAMES GASKET
$26.00Replacement gaskets for cam chestsDS174201- SKU:
- DS174201
- Availability:
- Ships Same Business Day
- Weight:
- 0.38 LBS
- UNITS:
- 5 PACK
- MATERIAL:
- PAPER
- THICKNESS METRIC:
- 0.79 MM
- TYPE:
- CAM COVER
- RIDING STYLE:
- STREET
- THICKNESS:
- 0,79 MM (0,031')
- THICKNESS IMPERIAL:
- 0,031'
- FEATURES:
- BEADED
- MATERIAL:
- SILICONE
- PRODUCT NAME:
- GASKET
$26.00 -
JAMES GASKET Cam Cover Gasket - Big Twin 25225-70-B
JAMES GASKET
$28.30Replacement gaskets for cam chestsDS174200- SKU:
- DS174200
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- MATERIAL:
- PAPER
- PRODUCT NAME:
- GASKET
- TYPE:
- CAM COVER
- UNITS:
- 10 PACK
- THICKNESS IMPERIAL:
- 0,031'
- RIDING STYLE:
- STREET
- THICKNESS:
- 0,79 MM (0,031')
- THICKNESS METRIC:
- 0.79 MM
$28.30 -
JAMES GASKET Rocker Cover Gasket - .030" 17540-69-A
JAMES GASKET
$18.40Made 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...DS174182- SKU:
- DS174182
- Availability:
- Ships Same Business Day
- Weight:
- 0.19 LBS
- MATERIAL:
- PAPER
- PRODUCT NAME:
- GASKET
- THICKNESS METRIC:
- 0.79 MM
- TYPE:
- ROCKER COVER
- THICKNESS IMPERIAL:
- 0,031'
- RIDING STYLE:
- STREET
- THICKNESS:
- 0,79 MM (0,031')
- UNITS:
- 10 PACK
$18.40 -
JAMES GASKET Rocker Cover Gasket 17540-69
JAMES GASKET
$16.50Made 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...DS174180- SKU:
- DS174180
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- PRODUCT NAME:
- GASKET
- UNITS:
- 10 PACK
- THICKNESS:
- 0,51 MM (0,020')
- TYPE:
- ROCKER COVER
- THICKNESS IMPERIAL:
- 0,020'
- THICKNESS METRIC:
- 0.51 MM
- MATERIAL:
- PAPER
- RIDING STYLE:
- STREET
$16.50 -
JAMES GASKET Bearing Housing Gasket - Silicon - 5 Speed 35652-79-X
JAMES GASKET
$20.70Made in the U.S.A.DS174133- SKU:
- DS174133
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- TYPE:
- BEARING HOUSING
- UNITS:
- 5 PACK
- FEATURES:
- BEADED
- PRODUCT NAME:
- GASKET
- MATERIAL:
- PAPER
- RIDING STYLE:
- STREET
$20.70
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.
