COMETIC
Cometic Gaskets, Head Gaskets, and Seal Kits at JJ Motorsports
Cometic Gasket, founded in 1989 by Bob Gorman in the USA, is a leading manufacturer in the powersports and automotive industries, specializing in high-performance gaskets and sealing solutions. Starting from a small facility dedicated to powersports, Cometic has grown to provide innovative products that withstand extreme pressures and temperatures, catering to engine builders, racers, and enthusiasts worldwide.
At JJ Motorsports, we offer a wide range of Cometic products designed for reliable engine maintenance and upgrades. Harley-Davidson riders can enhance their setups with the durable Derby Seal Cover C10306F5 or the precise Head Gasket 3.937" x 0.036" for M8 models. For exhaust systems, the Muffler Gasket for M8/FXST/XL ensures a tight seal. We also carry options for other brands, such as the Top End Gasket Kit 68 mm for Honda and the comprehensive Top End Gasket Kit for Yamaha. Whether you're rebuilding an engine or preventing leaks, Cometic delivers compatible solutions for various vehicles. Explore our inventory to find the perfect fit for your needs.
Key features of Cometic products include Multi-Layer Steel (MLS) technology for superior durability, custom bore sizes and thicknesses for precise applications, high-temperature resistance to handle demanding conditions, and advanced materials that maintain compression and prevent failures. Shop now and secure your ride with Cometic's trusted quality!
- Product
- Qty in Cart
- Quantity
- Price
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4.185 MLS Head Gasket .045 GM LSX RH C5935-045
COMETIC
$87.95A head gasket is your engine's critical seal between the cylinder head and block—failure means coolant and oil mixing, catastrophic overheating, and expensive engine damage. This MLS gasket delivers...CAGC5935-045- SKU:
- CAGC5935-045
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
$87.95Qty in Cart: 0Quantity:Price:$87.95Subtotal: -
4.185 MLS Head Gasket .040 - GM LSX RH C5935-040
COMETIC
$87.95A quality head gasket is foundational to engine reliability—it's your seal against combustion leakage, coolant mixing, and catastrophic engine failure. This 4.185 MLS head gasket is engineered for GM...CAGC5935-040- SKU:
- CAGC5935-040
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
$87.95 -
4.125 MLS Head Gasket .051 - GM LSX LH C5934-051
COMETIC
$87.95A quality head gasket is the foundation of any reliable engine build—seal failure leads to coolant loss, compression leaks, and catastrophic damage. This 4.125" MLS gasket is engineered for GM LSX...CAGC5934-051- SKU:
- CAGC5934-051
- Availability:
- Ships Same Business Day
- Weight:
- 1.30 LBS
$87.95Qty in Cart: 0Quantity:Price:$87.95Subtotal: -
4.125 MLS Head Gasket .051 - GM LSX RH C5933-051
COMETIC
$87.95A head gasket failure can sideline your build and cost you thousands in machine shop fees. This MLS gasket delivers the sealing reliability you need for forced-induction and high-boost LSX...CAGC5933-051- SKU:
- CAGC5933-051
- Availability:
- Ships Same Business Day
- Weight:
- 1.20 LBS
$87.95 -
4.150 MLS Head Gasket .051 - GM LS7 C5889-051
COMETIC
$96.54A compromised head gasket is a silent killer—it bleeds coolant, destroys compression, and can turn a solid build into a costly rebuild. The 4.150 MLS Head Gasket is engineered to handle the extreme...CAGC5889-051- SKU:
- CAGC5889-051
- Availability:
- Ships Same Business Day
- Weight:
- 1.25 LBS
$96.54 -
4.150 MLS Head Gasket .040 - GM LS7 C5889-040
COMETIC
$96.54A head gasket failure can cost you an engine and race day. This OEM-equivalent MLS gasket is engineered to withstand the extreme combustion pressures of forced induction and high-RPM applications...CAGC5889-040- SKU:
- CAGC5889-040
- Availability:
- Ships Same Business Day
- Weight:
- 0.90 LBS
$96.54 -
4.060 MLS Head Gasket .051 - GM LS C5751-051
COMETIC
$87.95A proper head gasket is non-negotiable for LS engine reliability—it's the critical seal between your cylinder head and block that prevents combustion pressure loss and coolant intrusion. This 4.060"...CAGC5751-051- SKU:
- CAGC5751-051
- Availability:
- Ships Same Business Day
- Weight:
- 1.20 LBS
$87.95 -
4.060 MLS Head Gasket .040 - GM LS1 C5751-040
COMETIC
$87.95A head gasket is your engine's critical seal between the cylinder head and block—any compromise here means coolant mixing with oil, loss of compression, and catastrophic engine failure. This 4.060"...CAGC5751-040- SKU:
- CAGC5751-040
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
$87.95 -
4.060 MLS Head Gasket .030 - GM LS1 C5751-030
COMETIC
$87.95A head gasket is your engine's critical seal against compression loss, coolant leaks, and catastrophic failure. The 4.060 MLS design delivers the clamping force and durability required for high-boost...CAGC5751-030- SKU:
- CAGC5751-030
- Availability:
- Ships Same Business Day
- Weight:
- 0.60 LBS
$87.95 -
4.155 MLS Head Gasket .051 - SBF C5515-051
COMETIC
$92.35A quality head gasket is the foundation of a reliable, high-compression engine—and this 4.155 MLS unit is engineered for Small Block Ford applications that demand precision sealing under extreme...CAGC5515-051- SKU:
- CAGC5515-051
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
$92.35 -
4.155 MLS Head Gasket .027 - SBF C5515-027
COMETIC
$87.95A properly sealed combustion chamber is non-negotiable for any serious Small Block Ford build. This MLS head gasket delivers consistent compression sealing across multiple heat cycles, preventing...CAGC5515-027- SKU:
- CAGC5515-027
- Availability:
- Ships Same Business Day
- Weight:
- 0.45 LBS
$87.95Qty in Cart: 0Quantity:Price:$87.95Subtotal: -
4.080 MLS Head Gasket .051 - SBF C5513-051
COMETIC
$92.35A quality head gasket is critical to maintaining cylinder pressure and preventing coolant/oil cross-contamination in your Small Block Ford engine. The 4.080 MLS design seals reliably under high...CAGC5513-051- SKU:
- CAGC5513-051
- Availability:
- Ships Same Business Day
- Weight:
- 1.10 LBS
$92.35 -
4.060 MLS Head Gasket .051 - SBF C5512-051
COMETIC
$92.35A quality head gasket is non-negotiable for engine reliability, and this 4.060 MLS unit delivers the sealing integrity your Small Block Ford demands. Multi-layer steel construction resists blow-out...CAGC5512-051- SKU:
- CAGC5512-051
- Availability:
- Ships Same Business Day
- Weight:
- 0.65 LBS
$92.35 -
4.060 MLS Head Gasket .040 - SBF C5512-040
COMETIC
$87.95A quality head gasket is the foundation of reliable engine sealing—it directly impacts combustion efficiency, oil circulation, and overall engine longevity. This MLS (Multi-Layer Steel) gasket...CAGC5512-040- SKU:
- CAGC5512-040
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
$87.95 -
4.060 MLS Head Gasket .027 - SBF C5512-027
COMETIC
$87.95A quality head gasket is the foundation of cylinder sealing integrity—without proper compression, you're leaving horsepower on the table and risking catastrophic engine failure. This 4.060 MLS head...CAGC5512-027- SKU:
- CAGC5512-027
- Availability:
- Ships Same Business Day
- Weight:
- 0.60 LBS
$87.95 -
4.030 MLS Head Gasket .036 SBF C5511-036
COMETIC
$87.95A head gasket failure can sideline your engine before you know it—and rebuilding costs far exceed preventive maintenance. This 4.030 MLS head gasket delivers the reliable sealing you need for...CAGC5511-036- SKU:
- CAGC5511-036
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
$87.95 -
4.030 MLS Head Gasket .027 - SBF C5511-027
COMETIC
$87.95A quality head gasket is the foundation of engine reliability—seal degradation leads to coolant loss, compression leaks, and catastrophic failure. This 4.030 MLS gasket delivers the precise...CAGC5511-027- SKU:
- CAGC5511-027
- Availability:
- Ships Same Business Day
- Weight:
- 0.65 LBS
$87.95 -
4.100 MLS Head Gasket .040 GM LS1/LS2/LS3/LS6 C5489-040
COMETIC
$87.95A head gasket is your engine's critical seal—it prevents coolant and oil from mixing with combustion chambers while maintaining compression integrity. This MLS (Multi-Layer Steel) gasket is...CAGC5489-040- SKU:
- CAGC5489-040
- Availability:
- Ships Same Business Day
- Weight:
- 0.90 LBS
$87.95 -
Oil Pan Gasket Set SBC Stroker Clearence C5488-060
COMETIC
$35.30A quality oil pan gasket set is essential for preventing oil seepage and maintaining proper lubrication pressure in your Small Block Chevy stroker engine. Fiber gaskets in this kit provide reliable...CAGC5488-060- SKU:
- CAGC5488-060
- Availability:
- Ships Same Business Day
- Weight:
- 0.29 LBS
$35.30Qty in Cart: 0Quantity:Price:$35.30Subtotal: -
4.155 MLS Head Gasket .051 - SBF SVO C5483-051
COMETIC
$92.35A properly sealed cylinder head is foundational to engine reliability and performance—any compression loss directly impacts power output and fuel efficiency. This 4.155 MLS head gasket is engineered...CAGC5483-051- SKU:
- CAGC5483-051
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
$92.35 -
4.080 MLS Head Gasket .051 - SBF SVO C5480-051
COMETIC
$92.35A quality head gasket is the foundation of any reliable engine build—it seals combustion pressure and prevents coolant leaks that can sideline your project. The 4.080 MLS head gasket from SVO...CAGC5480-051- SKU:
- CAGC5480-051
- Availability:
- Ships Same Business Day
- Weight:
- 0.90 LBS
$92.35 -
4.080 MLS Head Gasket .030 - SBF SVO C5480-030
COMETIC
$87.95A quality head gasket is the foundation of reliable cylinder sealing—without it, combustion pressure escapes, power output drops, and engine damage follows. The 4.080 MLS Head Gasket delivers...CAGC5480-030- SKU:
- CAGC5480-030
- Availability:
- Ships Same Business Day
- Weight:
- 0.70 LBS
$87.95 -
3.910 MLS Head Gasket .051 - GM LS1 C5475-051
COMETIC
$87.95A properly sealed combustion chamber is non-negotiable for LS1 performance. This MLS head gasket delivers the compression integrity your engine needs to hold boost, prevent coolant bypass, and...CAGC5475-051- SKU:
- CAGC5475-051
- Availability:
- Ships Same Business Day
- Weight:
- 1.30 LBS
$87.95 -
3.910 MLS Head Gasket .040 - GM LS1 C5475-040
COMETIC
$87.95A cylinder head gasket is your engine's critical seal between the block and head—any compromise in material quality or thickness directly impacts compression integrity, combustion efficiency, and...CAGC5475-040- SKU:
- CAGC5475-040
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
$87.95 -
4.160 MLS Head Gasket .051 - GM LS1 C5318-051
COMETIC
$87.95A proper head gasket is non-negotiable for LS engine reliability and peak performance. This MLS gasket delivers consistent cylinder sealing across boost cycles and sustained high RPM, preventing...CAGC5318-051- SKU:
- CAGC5318-051
- Availability:
- Ships Same Business Day
- Weight:
- 1.30 LBS
$87.95 -
4.160 MLS Head Gasket .040 - GM LS1 C5318-040
COMETIC
$87.95A head gasket failure can compromise combustion chamber sealing, destroy performance gains, and lead to catastrophic engine damage. This 4.160 MLS head gasket delivers reliable compression sealing...CAGC5318-040- SKU:
- CAGC5318-040
- Availability:
- Ships Same Business Day
- Weight:
- 0.95 LBS
$87.95 -
4.130 MLS Head Gasket .051 - GM LS1 C5317-051
COMETIC
$87.95A head gasket is the critical seal between your cylinder head and block—and choosing the right thickness directly impacts compression ratio, ring seal quality, and overall engine reliability. This 4...CAGC5317-051- SKU:
- CAGC5317-051
- Availability:
- Ships Same Business Day
- Weight:
- 1.30 LBS
$87.95Qty in Cart: 0Quantity:Price:$87.95Subtotal: -
4.130 MLS Head Gasket .040 - GM LS1 C5317-040
COMETIC
$87.95A head gasket is the critical seal between your cylinder head and engine block—it must withstand extreme combustion pressures and temperature cycling without failure. This 4.130 MLS gasket is...CAGC5317-040- SKU:
- CAGC5317-040
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
$87.95 -
Timing Cover Gasket SBF 302/351W .031 Thick C5276-031
COMETIC
$9.26A failing timing cover gasket is one of the easiest ways to develop an oil leak that slowly degrades your engine's performance and cleanliness. This composite gasket is engineered to .031" thickness...CAGC5276-031- SKU:
- CAGC5276-031
- Availability:
- Ships Same Business Day
- Weight:
- 0.16 LBS
$9.26 -
Carb Gasket - Holley 4150 Open Plenum C5263FC
COMETIC
$9.99A worn or damaged carburetor gasket compromises fuel atomization and creates vacuum leaks that rob your engine of performance and reliability. This OEM-equivalent Holley 4150 gasket seals the open...CAGC5263FC- SKU:
- CAGC5263FC
- Availability:
- Ships Same Business Day
- Weight:
- 0.09 LBS
$9.99Qty in Cart: 0Quantity:Price:$9.99Subtotal: -
4.200 MLS Head Gasket .036 - SBC C5249-036
COMETIC
$87.95A quality head gasket is critical to maintaining cylinder sealing and preventing coolant/oil leakage in high-performance applications. This 4.200" MLS gasket delivers reliable compression retention...CAGC5249-036- SKU:
- CAGC5249-036
- Availability:
- Ships Same Business Day
- Weight:
- 0.80 LBS
$87.95 -
4.200 MLS Head Gasket .027 - SBC C5249-027
COMETIC
$87.95A quality head gasket is fundamental to maintaining compression and preventing coolant or oil seepage in your Small Block Chevy engine. This 4.200" MLS gasket delivers reliable sealing under...CAGC5249-027- SKU:
- CAGC5249-027
- Availability:
- Ships Same Business Day
- Weight:
- 0.70 LBS
$87.95 -
4.165 MLS Head Gasket .045 - SBC C5248-045
COMETIC
$92.35A quality head gasket is the foundation of a reliable, high-compression engine—without proper sealing, you're risking coolant leaks, combustion blow-by, and catastrophic engine failure. This 4.165"...CAGC5248-045- SKU:
- CAGC5248-045
- Availability:
- Ships Same Business Day
- Weight:
- 0.85 LBS
$92.35 -
4.125 MLS Head Gasket .051 - SBC C5247-051
COMETIC
$92.35A quality head gasket is the foundation of reliable power output and engine longevity. This MLS (Multi-Layer Steel) gasket delivers the compression sealing and durability demanded by small block...CAGC5247-051- SKU:
- CAGC5247-051
- Availability:
- Ships Same Business Day
- Weight:
- 0.85 LBS
$92.35Qty in Cart: 0Quantity:Price:$92.35Subtotal: -
4.100 MLS Head Gasket .051 - SBC C5246-051
COMETIC
$92.35A quality head gasket is critical to maintaining cylinder pressure, preventing coolant and oil leakage, and ensuring reliable performance across engine rebuilds and modifications. This 4.100 MLS...CAGC5246-051- SKU:
- CAGC5246-051
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
$92.35 -
4.100 MLS Head Gasket .045 - SBC C5246-045
COMETIC
$92.35A quality head gasket is the foundation of any reliable Small Block Chevy build—seal integrity directly impacts compression, power delivery, and engine longevity. The 4.100 MLS design uses...CAGC5246-045- SKU:
- CAGC5246-045
- Availability:
- Ships Same Business Day
- Weight:
- 0.90 LBS
$92.35Qty in Cart: 0Quantity:Price:$92.35Subtotal: -
Oil Pan Gasket Set SBC Iron Eagle/GM Rocket Blk C5104-094
COMETIC
$42.93A compromised oil pan gasket is a silent killer of engine reliability—it allows oil seepage that can leave your engine starved of lubrication and your engine bay covered in mess. This fiber gasket...CAGC5104-094- SKU:
- CAGC5104-094
- Availability:
- Ships Same Business Day
- Weight:
- 0.09 LBS
$42.93Qty in Cart: 0Quantity:Price:$42.93Subtotal: -
Water Pump Gasket SBC .031 Thick (1pk) C15618
COMETIC
$3.38A failing water pump gasket compromises your cooling system's integrity, risking catastrophic overheating and engine damage. This OEM-spec fiber gasket seals the critical junction between your pump...CAGC15618- SKU:
- CAGC15618
- Availability:
- Ships Same Business Day
- Weight:
- 0.03 LBS
$3.38Qty in Cart: 0Quantity:Price:$3.38Subtotal: -
Fuel Pump Plate Gasket 4-Bolt Chevy/Ford/Dodge C15617
COMETIC
$1.84A compromised fuel pump gasket is an open invitation for leaks, vapor loss, and inconsistent fuel delivery—three things that have no place in a high-performance engine. This OEM-spec fiber gasket...CAGC15617- SKU:
- CAGC15617
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
$1.84 -
Timing Cover Gasket Set SBC C15615
COMETIC
$5.97A leaking timing cover gasket will quickly compromise your engine's oil integrity and create a messy, unreliable setup that undermines all your other performance investments. This complete gasket set...CAGC15615- SKU:
- CAGC15615
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
$5.97
