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 Top End Gasket Kit - XL 17049-07-X
JAMES GASKET
$131.95A top-end rebuild demands precision-engineered gaskets and seals that won't fail under high RPM loads. JAMES GASKET's complete Top End Gasket Kit eliminates the guesswork of sourcing individual components, giving you factory-grade sealing reliability in...09342095- SKU:
- 09342095
- Availability:
- Ships Same Business Day
- Weight:
- 0.86 LBS
- RIDING STYLE:
- STREET
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET KIT
- TYPE:
- TOP END
$131.95 -
COMETIC Carb Back Plate Gasket C9492
COMETIC
$19.40A reliable carb back plate gasket is critical to maintaining proper fuel system integrity and preventing costly air leaks that compromise engine performance. The COMETIC C9492 eliminates the guesswork with a proven aluminum Foamette design that seals...09342061- SKU:
- 09342061
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- UNITS:
- 10 PACK
- THICKNESS METRIC:
- 1.52 MM
- TYPE:
- THROTTLE HOUSING
- MATERIAL:
- AFM (ALUMINUM FOAM MATERIAL)
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- STREET
- THICKNESS:
- 1,52 MM (0,060')
- THICKNESS IMPERIAL:
- 0.060'
$19.40 -
COMETIC Primary to Transmission Gasket - .031" C9339
COMETIC
$55.30A leaking primary-to-transmission gasket can compromise engine sealing, waste fluids, and undermine the reliability of your build. COMETIC's precision-engineered gasket eliminates common leak points with consistent clamping force and superior material...09341653- SKU:
- 09341653
- Availability:
- Ships Same Business Day
- Weight:
- 0.26 LBS
- PRODUCT NAME:
- GASKET
- THICKNESS:
- 0,79 MM (0,031')
- UNITS:
- 10 PACK
- RIDING STYLE:
- STREET
- THICKNESS METRIC:
- 0.79 MM
- TYPE:
- CHAIN COVER
- TYPE:
- TRANSMISSION
- MATERIAL:
- FIBER
- THICKNESS IMPERIAL:
- 0,031'
$55.30Qty in Cart: 0Quantity:Price:$55.30Subtotal: -
COMETIC Oil Pump Body Gasket C9383-010
COMETIC
$12.70A failing oil pump gasket compromises your engine's lubrication system, risking catastrophic bearing wear and seizure. The COMETIC Oil Pump Body Gasket C9383-010 delivers OEM-grade sealing reliability with superior material composition designed to...09341651- SKU:
- 09341651
- Availability:
- Ships Same Business Day
- Weight:
- 0.21 LBS
- THICKNESS IMPERIAL:
- 0,010'
- MATERIAL:
- RUBBER
- MATERIAL:
- STEEL
- RIDING STYLE:
- STREET
- THICKNESS:
- 0,25 MM (0,010')
- THICKNESS METRIC:
- 0.25 MM
- TYPE:
- OIL PUMP BODY
- UNITS:
- 10 PACK
- PRODUCT NAME:
- GASKET
$12.70 -
COMETIC Oil Pump Body Gasket C9381-010
COMETIC
$12.70A properly sealed oil pump is critical to maintaining consistent oil pressure and preventing catastrophic engine damage from oil starvation. The COMETIC Oil Pump Body Gasket C9381-010 delivers a reliable, factory-quality seal that eliminates weeping and...09341650- SKU:
- 09341650
- Availability:
- Ships Same Business Day
- Weight:
- 0.21 LBS
- MATERIAL:
- STEEL
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- STREET
- THICKNESS:
- 0,25 MM (0,010')
- THICKNESS IMPERIAL:
- 0,010'
- TYPE:
- OIL PUMP BODY
- UNITS:
- 10 PACK
- MATERIAL:
- RUBBER
- THICKNESS METRIC:
- 0.25 MM
$12.70 -
COMETIC Cam Cover Gasket - .031" C9302
COMETIC
$14.90A leaking cam cover gasket compromises engine cleanliness and can lead to oil seepage onto critical engine components. COMETIC's .031" gasket delivers reliable sealing performance with superior material composition designed to handle repeated thermal...09341649- SKU:
- 09341649
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- RIDING STYLE:
- STREET
- THICKNESS METRIC:
- 0.79 MM
- MATERIAL:
- AFM (ALUMINUM FOAM MATERIAL)
- PRODUCT NAME:
- GASKET
- TYPE:
- CAM COVER
- THICKNESS:
- 0,79 MM (0,031')
- THICKNESS IMPERIAL:
- 0,031'
- UNITS:
- 5 PACK
$14.90 -
COMETIC Cam Cover Gasket - .032" C9302F5-032
COMETIC
$23.50A failing cam cover gasket is a one-way ticket to oil leaks, contaminated spark plugs, and engine bay mess. COMETIC's .032" gasket delivers reliable sealing with superior material composition designed to withstand high heat cycles and aggressive engine...09341648- SKU:
- 09341648
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- MATERIAL:
- AFM (ALUMINUM FOAM MATERIAL)
- RIDING STYLE:
- STREET
- THICKNESS IMPERIAL:
- 0,032'
- UNITS:
- 5 PACK
- PRODUCT NAME:
- GASKET
- THICKNESS:
- 0,81 MM (0,032')
- THICKNESS METRIC:
- 0.81 MM
- TYPE:
- CAM COVER
$23.50 -
COMETIC Cam Cover Gasket - .031" C9328
COMETIC
$18.10A leaking cam cover gasket compromises engine efficiency and invites contamination into your valve train—two problems you can't afford in a high-performance build. The COMETIC C9328 delivers the reliable seal you need with precision engineering and...09341647- SKU:
- 09341647
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- MATERIAL:
- AFM (ALUMINUM FOAM MATERIAL)
- THICKNESS:
- 0,79 MM (0,031')
- THICKNESS METRIC:
- 0.79 MM
- PRODUCT NAME:
- GASKET
- UNITS:
- 10 PACK
- RIDING STYLE:
- STREET
- THICKNESS IMPERIAL:
- 0,031'
- TYPE:
- CAM COVER
$18.10 -
COMETIC Rear Tappet Block Gasket C9297
COMETIC
$5.30A leaking rear tappet block gasket will compromise your engine's oil pressure stability and create costly internal seepage that degrades performance over time. COMETIC's precision-engineered gasket eliminates bypass leaks at a critical sealing point,...09341644- SKU:
- 09341644
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- MATERIAL:
- FIBER
- MOUNTING POSITION:
- REAR
- THICKNESS IMPERIAL:
- 0,020'
- THICKNESS METRIC:
- 0.51 MM
- UNITS:
- 10 PACK
- PRODUCT NAME:
- GASKET
- TYPE:
- TAPPET BLOCK
- RIDING STYLE:
- STREET
- THICKNESS:
- 0,51 MM (0,020')
$5.30 -
JAMES GASKET Oil Pump Gasket Kit - XL 04-XL
JAMES GASKET
$21.95A compromised oil pump gasket can lead to catastrophic oil loss and engine damage during high-stress racing conditions or extended driving sessions. This comprehensive rebuild kit gives you the ability to fully service your oil pump with OEM-quality...09341637- SKU:
- 09341637
- Availability:
- Ships Same Business Day
- Weight:
- 0.08 LBS
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET KIT
- TYPE:
- OIL PUMP
- RIDING STYLE:
- STREET
$21.95 -
JAMES GASKET Tail Lamp Gasket Kit 68123-55-K
JAMES GASKET
$11.95Tail lamp gasket failure leads to moisture intrusion, corroded housings, and electrical shorts that compromise safety and aesthetics. A quality gasket kit prevents water seepage and restores a proper seal, ensuring your tail lamps function reliably in...09341636- SKU:
- 09341636
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- PRODUCT NAME:
- GASKET KIT
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- STREET
- TYPE:
- TAIL LAMP MOUNTING
- UNITS:
- KIT
$11.95 -
COMETIC Bearing Housing Gasket C9264F
COMETIC
$24.90Bearing housing gaskets are critical sealing components that prevent oil leakage and maintain proper pressure in your engine's bearing system. The COMETIC C9264F uses advanced Aluminum Foamette construction to deliver reliable sealing without requiring...09341383- SKU:
- 09341383
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- PRODUCT NAME:
- GASKET
- THICKNESS:
- 0,81 MM (0,032')
- THICKNESS IMPERIAL:
- 0,032'
- TYPE:
- BEARING HOUSING
- UNITS:
- 10 PACK
- MATERIAL:
- AFM (ALUMINUM FOAM MATERIAL)
- RIDING STYLE:
- STREET
- THICKNESS METRIC:
- 0.81 MM
$24.90 -
COMETIC Thin Cover Gasket C9983F
COMETIC
$18.90The COMETIC Thin Cover Gasket C9983F eliminates the guesswork from valve cover sealing with a pre-formed gasket that delivers consistent, reliable performance across repeated heat cycles. Its integrated aluminum core and bonded nitrile synthetic rubber...09341381- SKU:
- 09341381
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- THICKNESS:
- 0,81 MM (0,032')
- THICKNESS IMPERIAL:
- 0,032'
- THICKNESS METRIC:
- 0.81 MM
- TYPE:
- TRANSMISSION TOP COVER
- RIDING STYLE:
- STREET
- UNITS:
- 10 PACK
- MATERIAL:
- AFM (ALUMINUM FOAM MATERIAL)
- PRODUCT NAME:
- GASKET
$18.90 -
COMETIC Top Cover Gasket C9516-032AFM
COMETIC
$5.30Top-end gasket failures cost you power, reliability, and track time. The COMETIC C9516-032AFM delivers the sealing integrity your high-output 4-stroke demands, whether you're running naturally aspirated or forced induction. Multi-layered steel...09341379- SKU:
- 09341379
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- UNITS:
- 10 PACK
- PRODUCT NAME:
- GASKET
- THICKNESS IMPERIAL:
- 0,032'
- TYPE:
- TRANSMISSION TOP COVER
- RIDING STYLE:
- STREET
- THICKNESS METRIC:
- 0.81 MM
$5.30Qty in Cart: 0Quantity:Price:$5.30Subtotal: -
COMETIC Shift Adapter Gasket C9521F
COMETIC
$5.30A reliable shift adapter gasket is critical to maintaining a sealed, leak-free transmission system under racing conditions and high-performance driving. The COMETIC C9521F eliminates the guesswork with a precision-engineered design that requires no...09341377- SKU:
- 09341377
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- TYPE:
- SHIFTER ADAPTER PLATE
- PRODUCT NAME:
- GASKET
- THICKNESS:
- 0,81 MM (0,032')
- THICKNESS IMPERIAL:
- 0,032'
- THICKNESS METRIC:
- 0.81 MM
- MATERIAL:
- ALUMINUM
- RIDING STYLE:
- STREET
- UNITS:
- 10 PACK
$5.30 -
COMETIC Complete Gasket Kit - XL1200 C9176
COMETIC
$288.70A complete gasket kit eliminates the gamble of mixing OEM and aftermarket gaskets—you get a matched set engineered to work together and hold pressure across your entire engine. Cometic's multi-layer construction and Viton seals deliver the reliability...09341224- SKU:
- 09341224
- Availability:
- Ships Same Business Day
- Weight:
- 1.64 LBS
- PRODUCT NAME:
- GASKET KIT
- THICKNESS IMPERIAL:
- 0,040'
- THICKNESS METRIC:
- 1.02 MM
- MATERIAL:
- VITON
- TYPE:
- COMPLETE
- MATERIAL:
- AFM (ALUMINUM FOAM MATERIAL)
- RIDING STYLE:
- STREET
- BORE SIZE:
- 3,500'
- BORE SIZE IMPERIAL:
- 3.500'
- MATERIAL:
- STEEL
- UNITS:
- KIT
$288.70 -
COMETIC Trans Gasket Kit - FL C9175
COMETIC
$102.85A transmission gasket failure doesn't just leak fluid—it compromises shift quality, wastes performance, and leaves you stranded. The COMETIC Trans Gasket Kit C9175 gives you OEM-equivalent sealing with application-specific engineering, so you can rebuild...09341223- SKU:
- 09341223
- Availability:
- Ships Same Business Day
- Weight:
- 0.42 LBS
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- STREET
- TYPE:
- TRANSMISSION
$102.85 -
COMETIC Trans Gasket Kit - Softail C9174
COMETIC
$102.85Transmission gasket failure is one of the most common culprits behind fluid leaks and loss of shift quality in Softail models. The COMETIC Trans Gasket Kit C9174 eliminates guesswork by providing every seal, gasket, and O-ring required for a complete,...09341222- SKU:
- 09341222
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- UNITS:
- KIT
- RIDING STYLE:
- STREET
- TYPE:
- TRANSMISSION
- PRODUCT NAME:
- GASKET KIT
$102.85 -
COMETIC Primary Gasket Kit C9173
COMETIC
$121.75Primary gasket failure is one of the most common culprits behind oil leaks and pressure loss in high-performance engines. The COMETIC Primary Gasket Kit C9173 eliminates this vulnerability with factory-grade sealing that handles extreme heat and...09341221- SKU:
- 09341221
- Availability:
- Ships Same Business Day
- Weight:
- 0.95 LBS
- RIDING STYLE:
- STREET
- MATERIAL:
- AFM (ALUMINUM FOAM MATERIAL)
- PRODUCT NAME:
- GASKET KIT
- UNITS:
- KIT
- TYPE:
- PRIMARY
$121.75Qty in Cart: 0Quantity:Price:$121.75Subtotal: -
COMETIC Complete Gasket Kit - Softail C9171
COMETIC
$287.65A complete gasket failure can cost you a race day—or worse, leave you stranded mid-season. The COMETIC Complete Gasket Kit for Softail models delivers OEM-quality sealing across your entire engine, primary, and drivetrain with materials engineered to...09341219- SKU:
- 09341219
- Availability:
- Ships Same Business Day
- Weight:
- 1.89 LBS
- BORE SIZE IMPERIAL:
- 3.750'
- MATERIAL:
- STEEL
- UNITS:
- KIT
- MATERIAL:
- VITON
- TYPE:
- COMPLETE
- BORE SIZE:
- 3,750'
- MATERIAL:
- AFM (ALUMINUM FOAM MATERIAL)
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- GASKET KIT
$287.65
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.
