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 Head Gasket - .036" - Twin Cam 16787-99-X
JAMES GASKET
$34.95A head gasket failure can leave you stranded or worse—compromise engine integrity on race day. The JAMES GASKET Head Gasket delivers the OEM-quality sealing you need with the reliability serious builders trust. This .036" gasket is engineered to handle...DS173540- SKU:
- DS173540
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- MATERIAL:
- -
- THICKNESS IMPERIAL:
- 0,036'
- RIDING STYLE:
- STREET
- THICKNESS METRIC:
- 0.91 MM
- BORE SIZE IMPERIAL:
- 3.875'
- STYLE:
- STANDARD BORE
- PRODUCT NAME:
- GASKET
- TYPE:
- CYLINDER BASE
- TYPE:
- CYLINDER HEAD
- UNITS:
- KIT
$34.95 -
JAMES GASKET Head Gasket - .045" - 95" - Twin Cam 16787-99
JAMES GASKET
$34.95A properly sealed head gasket is non-negotiable for engine reliability and performance. The James Gasket .045" design delivers precise compression containment for Twin Cam applications, preventing coolant and oil cross-contamination that can lead to...DS173539- SKU:
- DS173539
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- TYPE:
- CYLINDER BASE
- TYPE:
- CYLINDER HEAD
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET
- THICKNESS IMPERIAL:
- 0,045'
- THICKNESS METRIC:
- 1.14 MM
- BORE SIZE IMPERIAL:
- 3.875'
- MATERIAL:
- -
- RIDING STYLE:
- STREET
- STYLE:
- STANDARD BORE
$34.95 -
JAMES GASKET Metal Teflon Inspection Gasket - Big Twin 34906-85-X
JAMES GASKET
$33.60Inspection cover leaks compromise engine cleanliness and can lead to oil seepage that damages surrounding components. The JAMES GASKET Metal Teflon Inspection Gasket delivers a factory-spec seal that stops leaks before they start, whether you're running...DS173535- SKU:
- DS173535
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- TYPE:
- INSPECTION COVER
- FEATURES:
- BEADED
- MATERIAL:
- SILICONE
- MATERIAL:
- STEEL
- PRODUCT NAME:
- GASKET
- STYLE:
- PRIMARY
- THICKNESS:
- 1,14 MM (0,045')
- THICKNESS METRIC:
- 1.14 MM
- UNITS:
- 5 PACK
- RIDING STYLE:
- STREET
- MATERIAL:
- TEFLON
- THICKNESS IMPERIAL:
- 0,045'
$33.60 -
JAMES GASKET Top End Gasket Kit - 95" Twin Cam 17052-99-X
JAMES GASKET
$125.95A complete top-end gasket failure can sideline your 95" Twin Cam build and compromise engine integrity across multiple systems. This JAMES GASKET kit supplies all critical sealing components—gaskets, oil seals, and O-rings—needed for a proper engine...DS173532- SKU:
- DS173532
- Availability:
- Ships Same Business Day
- Weight:
- 0.70 LBS
- TYPE:
- TOP END
- BORE SIZE IMPERIAL:
- 3.875'
- RIDING STYLE:
- STREET
- THICKNESS IMPERIAL:
- 0,045'
- PRODUCT NAME:
- GASKET KIT
- THICKNESS METRIC:
- 1.14 MM
- UNITS:
- KIT
$125.95 -
JAMES GASKET Primary Gasket Kit without Seal 60538-81-K
JAMES GASKET
$60.95A properly sealed primary gasket is critical to preventing oil leakage and maintaining crankcase pressure in your engine. The JAMES GASKET Primary Gasket Kit delivers OEM-equivalent or superior sealing performance with proven silicone beading technology,...DS173525- SKU:
- DS173525
- Availability:
- Ships Same Business Day
- Weight:
- 0.31 LBS
- MATERIAL:
- SILICONE
- TYPE:
- PRIMARY COVER
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET KIT
- FEATURES:
- BEADED
- MATERIAL:
- PAPER
- RIDING STYLE:
- STREET
$60.95 -
JAMES GASKET Oil Pump Kit - EL/E 36-FLH
JAMES GASKET
$16.95A properly functioning oil pump is non-negotiable for engine longevity on EL and E-series Harleys—inadequate oil delivery leads to bearing wear, increased friction, and premature failure. The JAMES GASKET Oil Pump Kit is engineered to restore OEM flow...DS173524- SKU:
- DS173524
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- PRODUCT NAME:
- GASKET SET
- RIDING STYLE:
- STREET
- TYPE:
- OIL PUMP
- UNITS:
- KIT
$16.95 -
JAMES GASKET Interconnect Exhaust Gasket Dyna 65826-90
JAMES GASKET
$8.95Exhaust leaks rob your engine of power and introduce unwanted noise into your cabin. The JAMES GASKET Interconnect Exhaust Gasket seals the junction between your Dyna's primary pipes and manifold, ensuring combustion gases flow efficiently through your...DS173518- SKU:
- DS173518
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- RIDING STYLE:
- STREET
- STYLE:
- CROSSOVER
- PRODUCT NAME:
- GASKET
- UNITS:
- PAIR
- TYPE:
- EXHAUST
$8.95 -
JAMES GASKET Oil Pump Body Plug Brass Washer 6581
JAMES GASKET
$18.70A proper oil pump seal is critical to maintaining system pressure and preventing oil leakage that can compromise engine reliability. This JAMES GASKET brass washer ensures a tight, corrosion-resistant fit at the oil pump body plug—essential for engines...DS173516- SKU:
- DS173516
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- PRODUCT NAME:
- WASHER
- RIDING STYLE:
- STREET
- TYPE:
- PLUG
- MATERIAL:
- BRASS
- TYPE:
- OIL PUMP BODY
- UNITS:
- 10 PACK
$18.70 -
JAMES GASKET Copper Head Gasket - .045" - XL 16769-82
JAMES GASKET
$80.80A quality head gasket is the seal between your engine's block and cylinder head—get this wrong, and you're risking coolant loss, oil contamination, and catastrophic engine failure. The JAMES GASKET Copper Head Gasket delivers the compression sealing...DS173487- SKU:
- DS173487
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
- RIDING STYLE:
- STREET
- THICKNESS:
- 1,14 MM (0,045')
- TYPE:
- CYLINDER HEAD
- MATERIAL:
- COPPER
- UNITS:
- 10 PACK
- DISPLACEMENT:
- 1000 CC
- THICKNESS IMPERIAL:
- 0,045'
- PRODUCT NAME:
- GASKET
- THICKNESS METRIC:
- 1.14 MM
$80.80 -
JAMES GASKET Primary Inspection Gasket with Seal - Big Twin 34906-79-A
JAMES GASKET
$25.40A quality primary inspection gasket is the first line of defense against oil seepage and contamination in your Big Twin engine. This James gasket delivers factory-grade reliability with precision molding that ensures a consistent seal across all cover...DS173478- SKU:
- DS173478
- Availability:
- Ships Same Business Day
- Weight:
- 0.08 LBS
- FEATURES:
- BEADED
- STYLE:
- PRIMARY
- THICKNESS IMPERIAL:
- 0,062'
- THICKNESS METRIC:
- 1.60 MM
- UNITS:
- 5 PACK
- TYPE:
- INSPECTION COVER
- MATERIAL:
- SILICONE
- PRODUCT NAME:
- GASKET
- MATERIAL:
- PAPER
- RIDING STYLE:
- STREET
- THICKNESS:
- 1,60 MM (0,062')
$25.40 -
JAMES GASKET Primary Inspection Cover Gasket - 4 Speed 60567-65-C
JAMES GASKET
$14.10A leaking primary inspection cover can compromise your engine's oil integrity and leave you stranded on race day. The JAMES GASKET Primary Inspection Cover Gasket delivers a reliable, OEM-quality seal that eliminates weeping and maintains consistent...DS173477- SKU:
- DS173477
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- MATERIAL:
- SILICONE
- UNITS:
- 10 PACK
- TYPE:
- INSPECTION COVER
- RIDING STYLE:
- STREET
- STYLE:
- PRIMARY
- THICKNESS IMPERIAL:
- 0,062'
- THICKNESS METRIC:
- 1.60 MM
- MATERIAL:
- PAPER
- PRODUCT NAME:
- GASKET
- THICKNESS:
- 1,60 MM (0,062')
$14.10 -
JAMES GASKET Inspection Cover Gasket 60567-90
JAMES GASKET
$16.50Inspection and derby cover seals take a beating from constant exposure to oil, heat, and vibration. A failed gasket means oil seepage, contamination, and potential engine damage—exactly what you don't need mid-season or mid-race. The JAMES GASKET...DS173476- SKU:
- DS173476
- Availability:
- Ships Same Business Day
- Weight:
- 0.08 LBS
- FEATURES:
- BEADED
- RIDING STYLE:
- STREET
- THICKNESS IMPERIAL:
- 0,062'
- TYPE:
- INSPECTION COVER
- THICKNESS:
- 1,60 MM (0,062')
- MATERIAL:
- PAPER
- PRODUCT NAME:
- GASKET
- STYLE:
- PRIMARY
- THICKNESS METRIC:
- 1.60 MM
- UNITS:
- 5 PACK
$16.50 -
JAMES GASKET Valve Spring Guide Gasket 18265-37
JAMES GASKET
$13.00Valve spring guide gaskets are critical sealing components that prevent oil leakage at the valve cover interface—a common failure point in high-performance engines. A compromised gasket will degrade engine bay cleanliness and risk oil loss during...DS173472- SKU:
- DS173472
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- MATERIAL:
- PAPER
- PRODUCT NAME:
- GASKET
- TYPE:
- VALVE GUIDE
- UNITS:
- 10 PACK
- RIDING STYLE:
- STREET
$13.00 -
JAMES GASKET Inspection Screw Gasket - FXST/FXD 63859-95
JAMES GASKET
$23.70Proper gasket sealing is critical to preventing oil weeping and contamination at inspection points on your Harley-Davidson. The JAMES GASKET Inspection Screw Gasket delivers OEM-equivalent reliability with precision engineering that eliminates the need...DS173469- SKU:
- DS173469
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- PRODUCT NAME:
- WASHER
- RIDING STYLE:
- STREET
- TYPE:
- CHAIN COVER
- UNITS:
- 32 PACK
$23.70 -
JAMES GASKET Exhaust Port Gasket Steel Core 65834-68-SC
JAMES GASKET
$31.80A properly sealed exhaust port is the foundation of reliable engine performance and longevity. This James Gasket steel-core gasket prevents combustion leakage, heat loss, and exhaust bypass that can degrade power output and create costly secondary damage...DS173461- SKU:
- DS173461
- Availability:
- Ships Same Business Day
- Weight:
- 0.19 LBS
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- GASKET
- FEATURES:
- FIRE RING
- TYPE:
- EXHAUST
- UNITS:
- 10 PACK
$31.80 -
JAMES GASKET F/I Sending Unit Gasket 61326-95
JAMES GASKET
$31.80A leaking fuel sending unit gasket can compromise your fuel system's integrity and trigger false gauge readings that leave you guessing about your actual fuel level. The JAMES GASKET F/I Sending Unit Gasket 61326-95 seals the connection reliably,...DS173458- SKU:
- DS173458
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- GASKET
- UNITS:
- 5 PACK
- MATERIAL:
- CORK
- TYPE:
- FUEUL TANK CANOPY
$31.80 -
JAMES GASKET Float Bowl Gasket - Big Twin 27391-36
JAMES GASKET
$16.10A leaking or deteriorating float bowl gasket compromises fuel delivery precision and creates safety hazards on the track or street. The JAMES GASKET Float Bowl Gasket restores a reliable seal between your carburetor's float bowl and body, ensuring...DS173456- SKU:
- DS173456
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- MATERIAL:
- PAPER
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- GASKET
- TYPE:
- FLOAT BOWL
- UNITS:
- 10 PACK
$16.10 -
JAMES GASKET Tappet Block Gasket 18632-36
JAMES GASKET
$9.80When you're rebuilding your engine or performing a cam change, having the correct gasket and seal kit on hand eliminates guesswork and prevents costly mid-job delays. The JAMES GASKET Tappet Block Gasket 18632-36 is a complete, ready-to-install kit that...DS173454- SKU:
- DS173454
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- MOUNTING POSITION:
- FRONT
- THICKNESS IMPERIAL:
- 0,031'
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- STREET
- THICKNESS:
- 0,79 MM (0,031')
- THICKNESS METRIC:
- 0.79 MM
- UNITS:
- 10 PACK
- MATERIAL:
- PAPER
- PRODUCT NAME:
- GASKET
- TYPE:
- TAPPET BLOCK
$9.80 -
JAMES GASKET Intake Manifold Gasket with Seal - Big Twin 27077-78-X
JAMES GASKET
$34.20A compromised intake manifold gasket means internal oil leakage, inconsistent fuel mixture, and potential engine damage on your Big Twin. The JAMES GASKET Intake Manifold Gasket with Seal delivers a factory-spec replacement that restores proper air-fuel...DS173446- SKU:
- DS173446
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- MATERIAL:
- SILICONE
- MOUNTING POSITION:
- INTAKE MANIFOLD TO CARBURETOR
- MATERIAL:
- STEEL
- PRODUCT NAME:
- GASKET
- TYPE:
- INTAKE MANIFOLD
- FEATURES:
- BEADED
- RIDING STYLE:
- STREET
- UNITS:
- 10 PACK
$34.20 -
JAMES GASKET Air/Back Plate Gasket 29095-95
JAMES GASKET
$13.90A compromised air/back plate gasket leads to vacuum leaks, rough idle, and inconsistent fuel mixture—issues that ripple through your entire engine management system. The JAMES GASKET Air/Back Plate Gasket 29095-95 seals this critical junction with...DS173445- SKU:
- DS173445
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- PRODUCT NAME:
- GASKET
- STYLE:
- AIR CLEANER
- TYPE:
- BACKPLATE
- RIDING STYLE:
- STREET
- UNITS:
- 10 PACK
$13.90
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.
