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 Lower Rocker Cover Gasket - Big Twin 17355-92
JAMES GASKET
$42.80Made 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...DS174423- SKU:
- DS174423
- Availability:
- Ships Same Business Day
- Weight:
- 0.19 LBS
- MOUNTING POSITION:
- LOWER
- RIDING STYLE:
- STREET
- TYPE:
- ROCKER BOX
- UNITS:
- 5 PACK
- PRODUCT NAME:
- GASKET
- MATERIAL:
- RUBBER
$42.80 -
JAMES GASKET Cam Cover Gasket - Knucklehead EL 25225-36-A
JAMES GASKET
$29.10Replacement gaskets for cam chestsDS174422- SKU:
- DS174422
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- MATERIAL:
- PAPER
- RIDING STYLE:
- STREET
- THICKNESS IMPERIAL:
- 0,020'
- THICKNESS METRIC:
- 0.51 MM
- THICKNESS:
- 0,51 MM (0,020')
- PRODUCT NAME:
- GASKET
- TYPE:
- CAM COVER
- UNITS:
- 10 PACK
$29.10 -
JAMES GASKET Rear Cylinder Base Gasket - Big Twin 16777-48
JAMES GASKET
$16.60Require no gasket sealer, Made in the U.S.A.DS174420- SKU:
- DS174420
- Availability:
- Ships Same Business Day
- Weight:
- 0.19 LBS
- MATERIAL:
- PAPER
- PRODUCT NAME:
- GASKET
- TYPE:
- CYLINDER BASE
- UNITS:
- 10 PACK
- RIDING STYLE:
- STREET
- THICKNESS IMPERIAL:
- 0,032'
- THICKNESS METRIC:
- 0.81 MM
$16.60 -
JAMES GASKET Rubber Upper Rocker Cover Gasket - Big Twin 17356-92
JAMES GASKET
$42.80Made 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...DS174419- SKU:
- DS174419
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- RIDING STYLE:
- STREET
- TYPE:
- ROCKER BOX
- PRODUCT NAME:
- GASKET
- MOUNTING POSITION:
- UPPER
- UNITS:
- 5 PACK
- MATERIAL:
- RUBBER
$42.80 -
JAMES GASKET Rocker Cover Gasket 17539-38
JAMES GASKET
$14.11Made 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...DS174417- SKU:
- DS174417
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- MATERIAL:
- PAPER
- PRODUCT NAME:
- GASKET
- TYPE:
- ROCKER COVER
- UNITS:
- 10 PACK
- RIDING STYLE:
- STREET
- TYPE:
- EXHAUST
- MOUNTING POSITION:
- FRONT
$14.11 -
JAMES GASKET Rocker Cover Gasket 17537-38
JAMES GASKET
$16.60Made 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...DS174416- SKU:
- DS174416
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- PRODUCT NAME:
- GASKET
- MATERIAL:
- PAPER
- RIDING STYLE:
- STREET
- TYPE:
- INTAKE
- TYPE:
- ROCKER COVER
- MOUNTING POSITION:
- REAR
- UNITS:
- 10 PACK
$16.60 -
JAMES GASKET Rocker Cover Gasket 17535-38
JAMES GASKET
$14.70Made 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...DS174415- SKU:
- DS174415
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- PRODUCT NAME:
- GASKET
- TYPE:
- ROCKER COVER
- MATERIAL:
- PAPER
- RIDING STYLE:
- STREET
- MOUNTING POSITION:
- FRONT
- MOUNTING POSITION:
- REAR
- TYPE:
- EXHAUST
- TYPE:
- INTAKE
- UNITS:
- 10 PACK
$14.70 -
JAMES GASKET Rubber Inner Rocker Cover Gasket 17358-84-A
JAMES GASKET
$20.30Made 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...DS174413- SKU:
- DS174413
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- PRODUCT NAME:
- GASKET
- MATERIAL:
- RUBBER
- MOUNTING POSITION:
- INNER
- RIDING STYLE:
- STREET
- TYPE:
- ROCKER BOX
- UNITS:
- 10 PACK
$20.30 -
JAMES GASKET Upper Rocker Cover Gasket Rubber 17356-84-A
JAMES GASKET
$42.80Made 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...DS174412- SKU:
- DS174412
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- MATERIAL:
- RUBBER
- MOUNTING POSITION:
- UPPER
- PRODUCT NAME:
- GASKET
- UNITS:
- 5 PACK
- RIDING STYLE:
- STREET
- TYPE:
- ROCKER BOX
$42.80 -
JAMES GASKET Lower Rocker Cover Rubber - Big Twin 17355-84-A
JAMES GASKET
$42.80Made 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...DS174411- SKU:
- DS174411
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- MATERIAL:
- RUBBER
- UNITS:
- 5 PACK
- MOUNTING POSITION:
- LOWER
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- GASKET
- TYPE:
- ROCKER BOX
$42.80 -
JAMES GASKET Front Cylinder Base Gasket - Big Twin 16776-48
JAMES GASKET
$16.60Require no gasket sealer, Made in the U.S.A.DS174410- SKU:
- DS174410
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- THICKNESS METRIC:
- 0.81 MM
- TYPE:
- CYLINDER BASE
- UNITS:
- 10 PACK
- RIDING STYLE:
- STREET
- THICKNESS IMPERIAL:
- 0,032'
- MATERIAL:
- PAPER
- PRODUCT NAME:
- GASKET
$16.60 -
JAMES GASKET Base Gasket - 3-5/8" - Big Twin 16777-66-S
JAMES GASKET
$24.50Require no gasket sealer, Made in the U.S.A.DS174409- SKU:
- DS174409
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- BORE SIZE IMPERIAL:
- 3.625'
- TYPE:
- CYLINDER BASE
- MATERIAL:
- STEEL
- PRODUCT NAME:
- GASKET
- THICKNESS METRIC:
- 0.81 MM
- UNITS:
- 10 PACK
- THICKNESS IMPERIAL:
- 0,032'
- RIDING STYLE:
- STREET
$24.50 -
JAMES GASKET Front Base Gasket - FL/FX 16776-63
JAMES GASKET
$16.60Require no gasket sealer, Made in the U.S.A.DS174408- SKU:
- DS174408
- Availability:
- Ships Same Business Day
- Weight:
- 0.19 LBS
- RIDING STYLE:
- STREET
- UNITS:
- 10 PACK
- MATERIAL:
- PAPER
- THICKNESS METRIC:
- 0.81 MM
- PRODUCT NAME:
- GASKET
- THICKNESS IMPERIAL:
- 0,032'
- TYPE:
- CYLINDER BASE
$16.60 -
JAMES GASKET Front/Rear Base Gasket - EL 16774-21
JAMES GASKET
$16.60Require no gasket sealer, Made in the U.S.A.DS174405- SKU:
- DS174405
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- THICKNESS IMPERIAL:
- 0,031'
- UNITS:
- 10 PACK
- TYPE:
- CYLINDER BASE
- MATERIAL:
- PAPER
- RIDING STYLE:
- STREET
- THICKNESS METRIC:
- 0.79 MM
- PRODUCT NAME:
- GASKET
$16.60 -
JAMES GASKET Head Gasket - Big Twin 16773-85-T
JAMES GASKET
$59.20Made in the U.S.A.DS174404- SKU:
- DS174404
- Availability:
- Ships Same Business Day
- Weight:
- 0.31 LBS
- DISPLACEMENT:
- 1200 CC
- PRODUCT NAME:
- GASKET
- THICKNESS IMPERIAL:
- 0,045'
- THICKNESS METRIC:
- 1.14 MM
- MATERIAL:
- TEFLON
- RIDING STYLE:
- STREET
- THICKNESS:
- 1,14 MM (0,045')
- UNITS:
- 5 PACK
- DISPLACEMENT:
- 1340 CC
- TYPE:
- CYLINDER HEAD
$59.20 -
JAMES GASKET Big Bore Gasket Set - Big Twin 16770-86-S
JAMES GASKET
$49.95Genuine James kits include matching head and base gaskets and O-rings where applicable, Made in the U.S.A.DS174403- SKU:
- DS174403
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- PRODUCT NAME:
- GASKET
- STYLE:
- STANDARD BORE
- BORE SIZE IMPERIAL:
- 3.625'
- RIDING STYLE:
- STREET
- THICKNESS IMPERIAL:
- 0,062'
- THICKNESS METRIC:
- 1.60 MM
- TYPE:
- CYLINDER HEAD
- TYPE:
- CYLINDER BASE
- UNITS:
- KIT
- MATERIAL:
- TEFLON
$49.95 -
JAMES GASKET Fire Ring Head Gasket - Panhead 16770-48-X
JAMES GASKET
$48.95Made in the U.S.A.DS174402- SKU:
- DS174402
- Availability:
- Ships Same Business Day
- Weight:
- 0.14 LBS
- RIDING STYLE:
- STREET
- THICKNESS IMPERIAL:
- 0,045'
- PRODUCT NAME:
- GASKET
- FEATURES:
- FIRE RING
- THICKNESS:
- 1,14 MM (0,045')
- THICKNESS METRIC:
- 1.14 MM
- TYPE:
- CYLINDER HEAD
- UNITS:
- PAIR
$48.95 -
JAMES GASKET Lower Neoprene Rocker Cover Gasket 17353-89
JAMES GASKET
$35.80Made 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...DS174389- SKU:
- DS174389
- Availability:
- Ships Same Business Day
- Weight:
- 0.19 LBS
- UNITS:
- 5 PACK
- PRODUCT NAME:
- GASKET
- MATERIAL:
- NEOPRENE
- MOUNTING POSITION:
- LOWER
- RIDING STYLE:
- STREET
- TYPE:
- ROCKER BOX
$35.80 -
JAMES GASKET Upper Neoprene Rocker Cover Gasket - XL 17354-89
JAMES GASKET
$35.10Made 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...DS174388- SKU:
- DS174388
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- PRODUCT NAME:
- GASKET
- MATERIAL:
- NEOPRENE
- MOUNTING POSITION:
- UPPER
- UNITS:
- 5 PACK
- RIDING STYLE:
- STREET
- TYPE:
- ROCKER BOX
$35.10 -
JAMES GASKET Cam Cover Gasket - Big Twin 25225-93
JAMES GASKET
$35.95Replacement gaskets for cam chestsDS174386- SKU:
- DS174386
- Availability:
- Ships Same Business Day
- Weight:
- 0.19 LBS
- MATERIAL:
- PAPER
- RIDING STYLE:
- STREET
- DISPLACEMENT:
- 1340 CC
- PRODUCT NAME:
- GASKET
- TYPE:
- CAM COVER
- UNITS:
- 10 PACK
$35.95
