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 Cylinder Base Gasket - XL 16774-86
JAMES GASKET
$18.80A reliable cylinder base gasket is critical to maintaining proper compression and preventing oil leakage in high-performance engines. The JAMES GASKET XL 16774-86 delivers consistent sealing without requiring additional gasket sealant, saving time during...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
$9.00Valve guide gaskets are critical sealing components that prevent oil leakage and combustion blowby in your Big Twin engine. A worn or failed gasket compromises compression and can lead to oil consumption issues that affect performance and engine...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
$13.20A worn or damaged end cover gasket compromises engine sealing and can lead to oil leakage, reduced performance, and potential engine damage. The JAMES GASKET End Cover Gasket 36801-79 delivers OEM-quality sealing with precision manufacturing, ensuring...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
$18.40A leaking inspection cover gasket compromises engine cleanliness and can lead to costly oil seepage issues. This genuine James gasket delivers a reliable, OEM-quality seal that eliminates guesswork and keeps your engine bay dry. Whether you're running a...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
$111.70A failed primary cover gasket means oil seepage, potential engine damage, and costly downtime—especially if you're pushing your engine to its limits. The JAMES GASKET Primary Cover Gasket 34901-94 delivers OEM-spec reliability with silicone beading for 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
$57.50A worn or failing primary cover gasket compromises engine sealing and can lead to oil leakage, contamination, and costly damage. The JAMES GASKET Primary Cover Gasket delivers OEM-equivalent performance with silicone beading for superior durability and 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
$132.00A leaking primary cover gasket compromises both engine performance and aesthetics—leaving your engine vulnerable to oil seepage and potential damage. The JAMES GASKET Primary Cover Gasket 60539-94 delivers OEM-equivalent sealing performance with...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
$44.95A proper base gasket is critical for maintaining cylinder seal integrity and preventing oil weepage on Big Twin engines. JAMES GASKET's Big Bore version delivers a precision fit without the mess of additional sealers, saving you setup time and ensuring 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
$31.50Inspection cover leaks compromise engine cleanliness and can lead to oil seepage that damages your engine bay and surrounding components. The JAMES GASKET Inspection Cover Gasket is a precision-molded seal engineered to eliminate leaks at your derby or...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
$68.95A worn or degraded rocker box gasket is a common culprit behind oil leaks that compromise engine cleanliness and performance. The JAMES GASKET Rocker Box Rubber Gasket XL 17030-91 delivers a precision OEM-quality seal that restores proper containment and...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
$7.10A failing point cover gasket compromises cam chest sealing, leading to oil leakage and potential engine damage on your Shovelhead. This JAMES GASKET replacement restores a reliable seal without requiring extensive machine work or component replacement...DS174240- 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
$9.70A leaking solenoid mount gasket can compromise your entire fuel system's integrity and create costly vacuum leaks that tank engine performance. The JAMES GASKET Solenoid Mount Gasket 60645-65 delivers a factory-spec seal that eliminates seepage at the...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
$130.95A complete engine rebuild demands precision gaskets, seals, and O-rings that maintain compression and prevent oil leakage under extreme operating conditions. The JAMES GASKET Motor Gasket Kit supplies all the essential sealing components you need for 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
$37.95A leaking rocker cover gasket compromises engine sealing and invites oil seepage onto critical engine components. The JAMES GASKET 1 Piece Rocker Gasket delivers a reliable, long-lasting seal using solid steel construction with strategically positioned...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
$26.00A leaking cam cover gasket compromises engine sealing and invites oil seepage that accelerates wear on critical valve train components. JAMES GASKET's silicon cam cover gasket delivers reliable sealing performance with superior heat resistance, keeping...DS174202- 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
$26.00A leaking cam cover gasket compromises engine sealing and invites oil contamination into critical valve train components. The JAMES GASKET Cam Cover Gasket Silicon is engineered to restore a factory-tight seal on Big Twin cam chests, preventing oil...DS174201- 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
$28.30Cam chest gasket failure leads to oil weeping, contamination, and potential engine damage—a problem that demands immediate attention. The JAMES GASKET Cam Cover Gasket delivers OEM-equivalent sealing performance with superior material durability,...DS174200- 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
$18.40A failing rocker cover gasket creates oil seepage that compromises engine cleanliness and can lead to costly secondary damage. This JAMES GASKET solution delivers a dependable seal using proven materials and manufacturing precision, eliminating the...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
$16.50A compromised rocker cover gasket leads to oil seepage, contamination, and potential engine damage—issues that compound quickly under racing conditions or heavy use. The JAMES GASKET 17540-69 delivers a reliable, long-lasting seal using proven elastomer...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
$20.70A properly sealed bearing housing is critical to maintaining transmission integrity and preventing fluid loss that compromises gear lubrication. The JAMES GASKET Bearing Housing Gasket delivers reliable sealing performance with silicon material that...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.
