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
- Subtotal
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4.200 MLS Head Gasket .120 - SBC C5249-120
COMETIC
$235.73A quality head gasket is the foundation of a reliable, leak-free engine—and this MLS design handles the demands of high-performance SBC applications without compromise. The .120" thickness and 4.200"...CAGC5249-120- SKU:
- CAGC5249-120
- Availability:
- Ships Same Business Day
- Weight:
- 2.00 LBS
$235.73Qty in Cart: 0Quantity:Price:$235.73Subtotal: -
4.200 MLS Head Gasket .070 - SBC C5249-070
COMETIC
$121.04A quality head gasket is the foundation of cylinder sealing integrity—compromise here, and you're risking coolant intrusion, combustion leakage, and catastrophic engine failure. The 4.200 MLS Head...CAGC5249-070- SKU:
- CAGC5249-070
- Availability:
- Ships Same Business Day
- Weight:
- 2.00 LBS
$121.04 -
4.165 MLS Head Gasket .060 - SBC C5248-060
COMETIC
$121.04A head gasket failure can sideline your engine and cost you race time or project momentum. The 4.165 MLS Head Gasket delivers the sealing reliability and thermal stability your Small Block Chevy...CAGC5248-060- SKU:
- CAGC5248-060
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
$121.04 -
4.165 MLX Head Gasket .040 - SBC C5031-040
COMETIC
$113.09A quality head gasket is your engine's first line of defense against combustion leakage and thermal stress. The 4.165 MLX Head Gasket delivers the precision fit and durability required for small...CAGC5031-040- SKU:
- CAGC5031-040
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
$113.09 -
Exhaust Gasket - SBC 286 All Pro Heads EX314064AM
COMETIC
$11.90A proper exhaust seal is critical for preventing manifold leaks that rob horsepower and create vacuum issues throughout your fuel and ignition systems. This gasket is engineered specifically for All...CAGEX314064AM- SKU:
- CAGEX314064AM
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- MFG Part #:
- EX314064AM
$11.90 -
MLS Exhaust Gaskets .030 SBC 604 Crate Engine C5895-030
COMETIC
$44.59Exhaust gasket failure is a common source of performance loss and heat degradation in high-output SBC builds. These .030" multi-layered steel gaskets provide a reliable, pressure-tight seal between...CAGC5895-030- SKU:
- CAGC5895-030
- Availability:
- Ships Same Business Day
- Weight:
- 0.45 LBS
- MFG Part #:
- C5895-030
$44.59 -
MLS Exhaust Gasket - SBC 1.450 x 1.480 Port C5892-030
COMETIC
$42.35A reliable exhaust gasket is critical to maintaining a proper seal between your header and cylinder head—any leakage compromises both performance and longevity. This MLS gasket is engineered to...CAGC5892-030- SKU:
- CAGC5892-030
- Availability:
- Ships Same Business Day
- Weight:
- 0.53 LBS
- MFG Part #:
- C5892-030
$42.35 -
MLS Exhaust Gasket - SBC 1.500 Round Port C5891-030
COMETIC
$42.35A quality exhaust gasket is foundational to a leak-free, high-flowing exhaust system—and poor sealing at the manifold joint will cost you horsepower and reliability. This MLS gasket is engineered to...CAGC5891-030- SKU:
- CAGC5891-030
- Availability:
- Ships Same Business Day
- Weight:
- 0.46 LBS
- MFG Part #:
- C5891-030
$42.35 -
MLS Exhaust Gaskets .030 SBC w/SB2 Heads C5836-030
COMETIC
$57.36Exhaust manifold gasket failure is a common culprit behind air leaks that rob horsepower and create costly heat management problems. These MLS gaskets deliver the reliability you need for high-output...CAGC5836-030- SKU:
- CAGC5836-030
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- MFG Part #:
- C5836-030
$57.36 -
Rear Main Seal - SBC 400 Align Hone & Alm Block C5681
COMETIC
$30.80A leaking rear main seal can quickly turn a precision build into an oil-weeping disaster, compromising both performance and engine longevity. This two-piece rubber seal is engineered for SBC 400...CAGC5681- SKU:
- CAGC5681
- Availability:
- Ships Same Business Day
- Weight:
- 0.07 LBS
- MFG Part #:
- C5681
$30.80 -
Rear Main Seal - SBC 2-Piece C5680
COMETIC
$26.78Oil seepage at the crankshaft is one of the most common—and preventable—failures in Small Block Chevy engines. A failing rear main seal compromises engine integrity, causes messy leaks, and...CAGC5680- SKU:
- CAGC5680
- Availability:
- Ships Same Business Day
- Weight:
- 0.07 LBS
- MFG Part #:
- C5680
$26.78Qty in Cart: 0Quantity:Price:$26.78Subtotal: -
Timing Cover Gasket Kit SBF 351W C5660-020
COMETIC
$12.66A failing timing cover gasket compromises your engine's integrity by allowing oil seepage and inviting contaminants into critical engine timing components. This composite gasket kit restores a proper...CAGC5660-020- SKU:
- CAGC5660-020
- Availability:
- Ships Same Business Day
- Weight:
- 0.23 LBS
- MFG Part #:
- C5660-020
$12.66 -
SBC Timing Cover Seal & Gasket Kit C5530
COMETIC
$21.40Timing cover leaks are one of the most common sources of oil seepage on Small Block Chevy engines—and they're easy to ignore until they become a bigger problem. This comprehensive gasket and seal kit...CAGC5530- SKU:
- CAGC5530
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- MFG Part #:
- C5530
$21.40 -
4.200 MLS Head Gasket .040 - SBF C5517-040
COMETIC
$87.95A quality head gasket is the critical seal between your cylinder head and block—compromise here and you're risking coolant leaks, combustion blowby, and catastrophic engine failure. This 4.200" MLS...CAGC5517-040- SKU:
- CAGC5517-040
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
- MFG Part #:
- C5517-040
$87.95 -
4.155 MLS Head Gasket .040 - SBF C5515-040
COMETIC
$87.95A head gasket is your engine's first line of defense against combustion blow-by and coolant leakage—and this 4.155 MLS gasket delivers the sealing reliability that small block Ford racers and...CAGC5515-040- SKU:
- CAGC5515-040
- Availability:
- Ships Same Business Day
- Weight:
- 0.72 LBS
- MFG Part #:
- C5515-040
$87.95 -
4.100 MLS Head Gasket .040 - SBF C5514-040
COMETIC
$87.95A quality head gasket is critical to maintaining cylinder pressure and preventing coolant leaks in high-performance engines. This MLS gasket delivers superior sealing integrity across multiple...CAGC5514-040- SKU:
- CAGC5514-040
- Availability:
- Ships Same Business Day
- Weight:
- 0.73 LBS
- MFG Part #:
- C5514-040
$87.95 -
4.080 MLS Head Gasket .040 - SBF C5513-040
COMETIC
$87.95A quality head gasket is non-negotiable for any Small Block Ford build—it's the critical seal between your cylinder head and block that prevents combustion leakage and coolant seepage under boost or...CAGC5513-040- SKU:
- CAGC5513-040
- Availability:
- Ships Same Business Day
- Weight:
- 0.73 LBS
- MFG Part #:
- C5513-040
$87.95 -
4.030 MLS Head Gasket .040 - SBF C5511-040
COMETIC
$87.95A quality head gasket is the foundation of a reliable engine seal—without proper compression containment, you're risking coolant leaks, oil weeping, and catastrophic combustion loss. This 4.030 MLS...CAGC5511-040- SKU:
- CAGC5511-040
- Availability:
- Ships Same Business Day
- Weight:
- 0.82 LBS
- MFG Part #:
- C5511-040
$87.95 -
4.195 MLS Head Gasket .051 - SBF SVO C5509-051
COMETIC
$92.35A quality head gasket is the foundation of cylinder sealing—it's what prevents combustion gases and coolant from mixing, and it directly impacts your engine's reliability under boost or high RPM...CAGC5509-051- SKU:
- CAGC5509-051
- Availability:
- Ships Same Business Day
- Weight:
- 0.86 LBS
- MFG Part #:
- C5509-051
$92.35 -
4.200 MLS Head Gasket .040 - SBF SVO C5485-040
COMETIC
$87.95A quality head gasket is non-negotiable for engine reliability and peak combustion efficiency. This MLS gasket delivers consistent sealing under high boost, high RPM, and extreme cylinder...CAGC5485-040- SKU:
- CAGC5485-040
- Availability:
- Ships Same Business Day
- Weight:
- 0.83 LBS
- MFG Part #:
- C5485-040
$87.95 -
4.155 MLS Head Gasket .040 - SBF SVO C5483-040
COMETIC
$87.95A quality head gasket is non-negotiable for any serious Small Block Ford engine build—it's the critical seal that maintains compression and prevents coolant cross-contamination under boost or high...CAGC5483-040- SKU:
- CAGC5483-040
- Availability:
- Ships Same Business Day
- Weight:
- 0.70 LBS
- MFG Part #:
- C5483-040
$87.95 -
4.100 MLS Head Gasket .040 - SBF SVO C5481-040
COMETIC
$87.95A head gasket is your engine's critical seal between the cylinder head and block—get it wrong, and you're looking at coolant leaks, combustion blow-by, and catastrophic engine failure. This 4.100"...CAGC5481-040- SKU:
- CAGC5481-040
- Availability:
- Ships Same Business Day
- Weight:
- 0.74 LBS
- MFG Part #:
- C5481-040
$87.95 -
4.080 MLS Head Gasket .040 - SBF SVO C5480-040
COMETIC
$87.95A quality head gasket is critical to maintaining compression integrity and preventing coolant or oil seepage in high-demand engine applications. This 4.080 MLS gasket is engineered for Small Block...CAGC5480-040- SKU:
- CAGC5480-040
- Availability:
- Ships Same Business Day
- Weight:
- 0.73 LBS
- MFG Part #:
- C5480-040
$87.95Qty in Cart: 0Quantity:Price:$87.95Subtotal: -
4.030 MLS Head Gasket .040 - SBF SVO C5478-040
COMETIC
$87.95A quality head gasket is the foundation of cylinder sealing integrity—any compromise here translates directly to compression loss, coolant leakage, and catastrophic engine failure. The 4.030 MLS Head...CAGC5478-040- SKU:
- CAGC5478-040
- Availability:
- Ships Same Business Day
- Weight:
- 0.74 LBS
- MFG Part #:
- C5478-040
$87.95 -
4.080 MLS Head Gasket .030 - SBC Vortec C5474-030
COMETIC
$87.95A properly sealed cylinder head is non-negotiable for any high-performance small block Chevy build. This 4.080 MLS head gasket delivers the compression sealing reliability required for forced...CAGC5474-030- SKU:
- CAGC5474-030
- Availability:
- Ships Same Business Day
- Weight:
- 0.60 LBS
- MFG Part #:
- C5474-030
$87.95 -
4.190 MLS Head Gasket .040 - SBC SB2 C5472-040
COMETIC
$87.95A head gasket is your engine's first line of defense against combustion pressures and coolant intrusion—get it wrong, and you're looking at catastrophic failure. This 4.190 MLS gasket is engineered...CAGC5472-040- SKU:
- CAGC5472-040
- Availability:
- Ships Same Business Day
- Weight:
- 0.70 LBS
- MFG Part #:
- C5472-040
$87.95Qty in Cart: 0Quantity:Price:$87.95Subtotal: -
4.165 MLS Head Gasket .040 - SBC Vortec C5410-040
COMETIC
$87.95A quality head gasket is the foundation of any reliable engine—seal failure leads to coolant loss, oil contamination, and catastrophic engine damage. This 4.165" MLS gasket is engineered specifically...CAGC5410-040- SKU:
- CAGC5410-040
- Availability:
- Ships Same Business Day
- Weight:
- 0.76 LBS
- MFG Part #:
- C5410-040
$87.95Qty in Cart: 0Quantity:Price:$87.95Subtotal: -
4.200 MLS Head Gasket .051 - SBC Brodix C5403-051
COMETIC
$89.75A quality head gasket is non-negotiable for engine reliability, and this 4.200" MLS gasket delivers the compression sealing and durability your SBC demands. Brodix's multi-layered steel construction...CAGC5403-051- SKU:
- CAGC5403-051
- Availability:
- Ships Same Business Day
- Weight:
- 0.93 LBS
- MFG Part #:
- C5403-051
$89.75 -
4.200 MLS Head Gasket .040 - SBC Brodix C5403-040
COMETIC
$85.48A head gasket is the critical seal between your cylinder head and block—fail here, and you're looking at catastrophic coolant loss, compression leakage, and engine damage. The Brodix C5403-040 MLS...CAGC5403-040- SKU:
- CAGC5403-040
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
- MFG Part #:
- C5403-040
$85.48 -
4.160 MLS Head Gasket .051 - SBC Brodix C5402-051
COMETIC
$89.75A head gasket is the critical seal between your cylinder head and block—get it wrong, and you're risking catastrophic coolant mixing, compression loss, and engine damage. The Brodix C5402-051 MLS...CAGC5402-051- SKU:
- CAGC5402-051
- Availability:
- Ships Same Business Day
- Weight:
- 0.80 LBS
- MFG Part #:
- C5402-051
$89.75 -
4.160 MLS Head Gasket .040 - SBC Brodix C5402-040
COMETIC
$85.48A quality head gasket is critical to maintaining compression, preventing coolant leakage, and ensuring reliable performance under sustained load. The Brodix C5402-040 is engineered with multi-layered...CAGC5402-040- SKU:
- CAGC5402-040
- Availability:
- Ships Same Business Day
- Weight:
- 0.72 LBS
- MFG Part #:
- C5402-040
$85.48 -
4.125 MLS Head Gasket .040 - SBC Brodix C5400-040
COMETIC
$85.48A quality head gasket is the foundation of any reliable engine build—it's your seal against compression loss, coolant leaks, and catastrophic failure. The Brodix C5400-040 MLS gasket delivers the...CAGC5400-040- SKU:
- CAGC5400-040
- Availability:
- Ships Same Business Day
- Weight:
- 0.73 LBS
- MFG Part #:
- C5400-040
$85.48 -
4.030 MLS Head Gasket .040 - SBC Brodix C5399-040
COMETIC
$85.48A quality head gasket is fundamental to engine reliability and performance—it seals combustion pressure while managing thermal expansion across a wide operating range. The Brodix C5399-040 MLS design...CAGC5399-040- SKU:
- CAGC5399-040
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
- MFG Part #:
- C5399-040
$85.48 -
Rear Main Seal - SBC 2-Piece C5379
COMETIC
$85.54A leaking rear main seal costs you oil, reliability, and peace of mind—especially when you're pushing your Small Block Chevy to its limits. This 2-piece design delivers superior sealing performance...CAGC5379- SKU:
- CAGC5379
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- MFG Part #:
- C5379
$85.54Qty in Cart: 0Quantity:Price:$85.54Subtotal: -
3.830 MLS Head Gasket .040 - Ford 2.3L C5369-040
COMETIC
$75.97A quality head gasket is non-negotiable for engine reliability, especially when you're running boost or pushing higher compression ratios on your Ford 2.3L. This MLS (Multi-Layered Steel) gasket...CAGC5369-040- SKU:
- CAGC5369-040
- Availability:
- Ships Same Business Day
- Weight:
- 0.77 LBS
- MFG Part #:
- C5369-040
$75.97 -
4.180 MLS LH Head Gasket .040 - SBF Yates C5364-040
COMETIC
$87.95A quality head gasket is the foundation of cylinder sealing integrity—compromise here and you're risking compression loss, coolant leaks, and catastrophic engine failure. The Yates C5364-040 MLS...CAGC5364-040- SKU:
- CAGC5364-040
- Availability:
- Ships Same Business Day
- Weight:
- 0.68 LBS
- MFG Part #:
- C5364-040
$87.95 -
4.100 MLS Head Gasket .040 - SBF Yates LH C5359-040
COMETIC
$87.95A head gasket failure can cost you a race—or worse, your engine. The Yates 4.100 MLS Head Gasket is engineered for Small Block Ford applications where precision sealing and thermal stability are...CAGC5359-040- SKU:
- CAGC5359-040
- Availability:
- Ships Same Business Day
- Weight:
- 0.80 LBS
- MFG Part #:
- C5359-040
$87.95 -
4.200 MLS Head Gasket .040 - SBC SB2 C5324-040
COMETIC
$87.95A proper head gasket is critical to maintaining compression integrity and preventing coolant leaks in high-performance engines. The 4.200 MLS design delivers superior sealing across thermal cycles,...CAGC5324-040- SKU:
- CAGC5324-040
- Availability:
- Ships Same Business Day
- Weight:
- 0.74 LBS
- MFG Part #:
- C5324-040
$87.95 -
SBC Water Pump Gasket C5299-018
COMETIC
$3.39A compromised water pump gasket is a silent killer for Small Block Chevy engines—coolant leaks develop gradually, leading to overheating, thermal stress, and catastrophic engine damage if left...CAGC5299-018- SKU:
- CAGC5299-018
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- MFG Part #:
- C5299-018
$3.39 -
SBC Timing Cover Gasket .031 C5261-031
COMETIC
$15.17A leaking timing cover gasket compromises engine sealing and invites oil seepage that degrades performance and cleanliness. This .031" composite gasket delivers reliable, long-term sealing for Small...CAGC5261-031- SKU:
- CAGC5261-031
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- MFG Part #:
- C5261-031
$15.17
