If you're looking for a reliable and sturdy cylinder head gasket for your Jaguar, the Cometic Gaskets C4306-040 is a solid choice. Designed specifically for the Jaguar 3.8L XK6 engine, this gasket is made from high-quality multi-layer steel, ensuring durability and performance.
This gasket is engineered to withstand the high pressures and temperatures typical of performance engines. The multi-layer steel construction allows for excellent sealing and reduces the risk of leaks, which can be a common issue with standard gaskets. This is particularly important for vintage models like the Jaguar Mark IX (1959-1961), Mark X (1962-1964), and XK150 (1958-1961).
Many customers have noted how well the C4306-040 performs during both daily driving and more spirited outings. One user mentioned, "I installed this gasket on my XK150, and it fit perfectly. No leaks, and the engine runs smoother than ever." Another customer shared, "It's nice to find a gasket that actually delivers on its promises. I’m really pleased with the quality."
This gasket is designed for specific models and should be used accordingly. Ensure to check compatibility with your engine type to avoid any fitment issues.
Other Part Numbers:
Cometic Gaskets #cgsC4306-040
⚠ WARNING:
Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov
| Vehicle Make/Model | Year | Trims |
|---|---|---|
| Jaguar Mark IX | 1959-1961 | Base |
| Jaguar Mark X | 1962-1964 | Base |
| Jaguar XK150 | 1958-1961 | S |
| Jaguar XK150 | 1958-1961 | Base |

Cometic is a company known for manufacturing gaskets and engine seals for different engines. They cater to various industries such as the marine, industrial, agricultural, and automotive sectors. The company was established back in 1989 and has since provided high performance sealing solutions worldwide.
Motorsport ParticipationThe company is considered as the leading supplier when it comes to gaskets and seals worldwide. They have provided high-performance gaskets in various racing events such as NASCAR, GNCC, and AMA. They helped top racing teams compete at the highest level by improving engine reliability.
Built for Extreme PerformanceWhether you are into endurance races at more than 220mph or setting the fastest drag records in 2000 hp top fuel race cars, Cometic has the right product for you. They design their products to withstand extreme temperatures and pressures. Hence, they are the brand chosen by the best in motorsports.
Best Value of ProductCometic has always been dedicated to providing high-quality products that provide customer satisfaction. They have always given their customers the best product at the most competitive price.
Quality in Every ProductThe company is housed in a 70,000 square foot facility with state-of-the-art manufacturing equipment that helps them create products that are superior compared to its competitors. Using premium materials, they are able to develop gaskets that provide proper seals every time.
Purchase Cometic Products at Vivid RacingIf you are in search of a high-quality gasket for your engine, then Cometic is the brand for you. Designed for OEM or high-performance applications, Cometic has got you covered. To know more about them, visit Vivid Racing and check out their list of products that fit your needs.