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
-
VANCE & HINES Exhaust Port Gaskets - Big Twin/XL 22899
VANCE & HINES
$16.95Designed to work with Big Twin models' new spherical exhaust port; will also work on earlier style systems09341882- SKU:
- 09341882
- Availability:
- Ships Same Business Day
- Weight:
- 0.03 LBS
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- GASKET
- UNITS:
- PAIR
- TYPE:
- EXHAUST
$16.95 -
JAMES GASKET Foam Primary Cover Gasket 34955-04-F
JAMES GASKET
$36.95Top quality gaskets, seals and o-rings meet or exceed OEM specifications, Primary gasket features silicone beading, Made in the U.S.A.09350249- SKU:
- 09350249
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- MATERIAL:
- FOAMET
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- GASKET
- UNITS:
- EACH
- TYPE:
- PRIMARY COVER
$36.95 -
JAMES GASKET Transmission Oil Pan 26077-93
JAMES GASKET
$33.90Made in the U.S.A.09343431- SKU:
- 09343431
- Availability:
- Ships Same Business Day
- Weight:
- 0.26 LBS
- PRODUCT NAME:
- GASKET
- TYPE:
- TRANSMISSION
- UNITS:
- 5 PACK
- RIDING STYLE:
- STREET
- TYPE:
- OIL PAN
$33.90 -
FEULING OIL PUMP CORP. Top End Cam Install Kit - M8 2030
FEULING OIL PUMP CORP.
$119.95Each kit includes cam plate roller bearings, Koyo Torrington® full roller inner needle bearings, 12-point ARP® camshaft and crankshaft bolts, ARP® fastener moly paste and Loctite® compound and hardened washers, Gaskets include copper exhaust gaskets, cam...09345984- SKU:
- 09345984
- Availability:
- Ships Same Business Day
- Weight:
- 0.85 LBS
- RIDING STYLE:
- STREET
- TYPE:
- CAM CHANGE
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET KIT
$119.95 -
JAMES GASKET Clutch Derby Cover Gasket 25416-14
JAMES GASKET
$49.40JAMES GASKET Clutch Derby Cover Gasket09345379- SKU:
- 09345379
- Availability:
- Ships Same Business Day
- Weight:
- 0.21 LBS
- UNITS:
- 5 PACK
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- STREET
- TYPE:
- DERBY COVER
$49.40 -
JAMES GASKET Cylinder Head Gasket - M8 JGI-16500326
JAMES GASKET
$34.00JAMES GASKET Cylinder Head Gasket - M809345963- SKU:
- 09345963
- Availability:
- Ships Same Business Day
- Weight:
- 0.41 LBS
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- GASKET
- TYPE:
- CYLINDER HEAD
- UNITS:
- 5 PACK
$34.00 -
JAMES GASKET Cylinder Base Gasket - M8 JGI-16500332
JAMES GASKET
$35.95JAMES GASKET Cylinder Base Gasket - M809345964- SKU:
- 09345964
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- STREET
- TYPE:
- CYLINDER BASE
- UNITS:
- PAIR
$35.95 -
JAMES GASKET Lifter Cover Gasket - M8 JGI-25700362
JAMES GASKET
$12.95JAMES GASKET Lifter Cover Gasket - M809345965- SKU:
- 09345965
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- STREET
- TYPE:
- TAPPET BLOCK
- UNITS:
- PAIR
$12.95 -
JAMES GASKET Piston Squirter Gasket - M8 JGI-25700433
JAMES GASKET
$17.10JAMES GASKET Piston Squirter Gasket - M809345967- SKU:
- 09345967
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- UNITS:
- 10 PACK
- TYPE:
- OIL JET ASSEMBLY
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- STREET
$17.10 -
JAMES GASKET Cam Cover Gasket - M8 JGI-25700370
JAMES GASKET
$39.70JAMES GASKET Cam Cover Gasket - M809345968- SKU:
- 09345968
- Availability:
- Ships Same Business Day
- Weight:
- 0.16 LBS
- TYPE:
- CAM COVER
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- STREET
- UNITS:
- 5 PACK
$39.70 -
JAMES GASKET Air Cleaner Gasket - M8 JGI-29000149
JAMES GASKET
$8.00JAMES GASKET Air Cleaner Gasket - M809345969- SKU:
- 09345969
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- TYPE:
- AIR FILTER
- UNITS:
- 5 PACK
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- STREET
$8.00 -
DRAG SPECIALTIES Gasket Board - 6 Speed 0934-6982
DRAG SPECIALTIES
$129.73DRAG SPECIALTIES Gasket Board - 6 Speed09346982- SKU:
- 09346982
- Availability:
- Ships Same Business Day
- Weight:
- 4.00 LBS
- UNITS:
- EACH
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- GASKET BOARD
- STYLE:
- 6 SPEED
$129.73 -
DRAG SPECIALTIES Gasket Board - 6 Speed 0934-6983
DRAG SPECIALTIES
$117.37DRAG SPECIALTIES Gasket Board - 6 Speed09346983- SKU:
- 09346983
- Availability:
- Ships Same Business Day
- Weight:
- 4.00 LBS
- PRODUCT NAME:
- GASKET BOARD
- RIDING STYLE:
- STREET
- STYLE:
- 6 SPEED
- UNITS:
- EACH
$117.37 -
DRAG SPECIALTIES Gasket Board - XL 0934-1878
DRAG SPECIALTIES
$160.63Complete four-color display features gaskets, seals and O-rings necessary to rebuild most XL Evolution motors, Mounts easily on any 1/8" or 1/4" peg board, Designed so that three 32" H x 48" W displays will fit on a single sheet of 4' x 8' pegboard,...09341878- SKU:
- 09341878
- Availability:
- Ships Same Business Day
- Weight:
- 7.05 LBS
- PRODUCT NAME:
- DISPLAY BOARD
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- TYPE:
- GASKET
$160.63 -
DRAG SPECIALTIES Inner Rocker Box Gasket 302133-HC4
DRAG SPECIALTIES
$20.55Replacement inner gasket designed for Drag Specialties Rocker Box KitsDS376510- SKU:
- DS376510
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- RIDING STYLE:
- STREET
- TYPE:
- ROCKER BOX
- UNITS:
- 10 PACK
- PRODUCT NAME:
- GASKET
$20.55 -
JAMES GASKET Oil Retain Gasket - XL 35169-52-F
JAMES GASKET
$7.80Features and aluminum core coated on two sides withexpanded nitrile rubber than coated with a silicone release coating to ensure a positive seal with excellent release characteristic upon disassembly.09344643- SKU:
- 09344643
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- RIDING STYLE:
- STREET
- MATERIAL:
- FOAMET
- UNITS:
- 5 PACK
- PRODUCT NAME:
- GASKET
- TYPE:
- OIL SEAL RETAINER
$7.80 -
JAMES GASKET Oil Pump Gasket Kit HVHP
JAMES GASKET
$20.95Comes with new components that allow you to totally rebuild/rebush most oil pumps, Made in the U.S.A.09341552- SKU:
- 09341552
- Availability:
- Ships Same Business Day
- Weight:
- 1.40 LBS
- RIDING STYLE:
- STREET
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET KIT
- TYPE:
- OIL PUMP
$20.95 -
COMETIC Complete Gasket Kit C9748F
COMETIC
$356.95Every gasket in these kits uses the best materials possible for its intended application, Multi-Layer Steel (MLS) head gaskets, Steel Viton®-coated base gaskets, Blue Viton valve stem seals, Aluminum Foam Material (AFM) race-style exhaust gaskets,...09340815- SKU:
- 09340815
- Availability:
- Ships Same Business Day
- Weight:
- 1.81 LBS
- BORE SIZE:
- 3,500'
- BORE SIZE IMPERIAL:
- 3.500'
- MATERIAL:
- STEEL
- MATERIAL:
- VITON
- TYPE:
- COMPLETE
- UNITS:
- KIT
- MATERIAL:
- AFM (ALUMINUM FOAM MATERIAL)
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- GASKET KIT
- THICKNESS IMPERIAL:
- 0,040'
- THICKNESS METRIC:
- 1.02 MM
$356.95 -
COMETIC Top End Gasket - 3-13/16" C9969
COMETIC
$135.40EST (Extreme Sealing Technology) gasket kits include embossed stainless steel head, base, and rocker gaskets covered with a proprietary rubber material, Head gasket material allows heat to be drawn away from the combustion ring and dissipated evenly...09340820- SKU:
- 09340820
- Availability:
- Ships Same Business Day
- Weight:
- 0.78 LBS
- ENGINE TYPE:
- 4-STROKE
- PRODUCT NAME:
- GASKET KIT
- BORE SIZE:
- 3,8125'
- MATERIAL:
- FOAM
- RIDING STYLE:
- STREET
- MATERIAL:
- ALUMINUM
- MATERIAL:
- VITON
- TYPE:
- TOP END
- BORE SIZE IMPERIAL:
- 3.8125'
- UNITS:
- KIT
$135.40 -
COMETIC Trans Gasket - Big Twin C9469
COMETIC
$81.85High quality, application specific materials give a long and reliable life, Kit includes all necessary gaskets, seals and O-rings needed for each application, Made in the U.S.A.09340824- SKU:
- 09340824
- Availability:
- Ships Same Business Day
- Weight:
- 1.22 LBS
- TYPE:
- TRANSMISSION
- UNITS:
- KIT
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- GASKET KIT
$81.85
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.
