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Huge Savings Cometic Gm/mercury Marine Big Block V8 Gen-iv/v/vi .045in Mls Cylinder Head Gasket - 4.580in Bore Upgraded Model [gD2AJyPl]

$31.99 $102.99 -69%

Cometic GM/Mercury Big Block V8 Gasket The Cometic GM/Mercury Marine Big Block V8 Gen-IV/V/VI .045in MLS Cylinder Head Gasket is designed to provide unmatched sealing performance for your high-output engines. This gasket is engineered to meet the dem

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Huge Savings Cometic Gm/mercury Marine Big Block V8 Gen-iv/v/vi .045in Mls Cylinder Head Gasket - 4.580in Bore Upgraded Model [gD2AJyPl]

Cometic GM/Mercury Big Block V8 Gasket

The Cometic GM/Mercury Marine Big Block V8 Gen-IV/V/VI .045in MLS Cylinder Head Gasket is designed to provide unmatched sealing performance for your high-output engines. This gasket is engineered to meet the demanding needs of modern marine and automotive engines, offering superior durability and reliability. Comprised of multiple embossed layers of stainless steel, the gasket is coated with Viton rubber on the outer layers, ensuring exceptional heat resistance and resistance to corrosion. This innovative design guarantees maximum sealing performance without the need for additional sealants.

Product Specifications and Features

The Cometic MLS Cylinder Head Gasket is specifically engineered for engines with a 4.580in bore, making it an ideal fit for GM/Mercury Marine Big Block V8 Gen-IV/V/VI engines. It features a compressed thickness of 0.045", which is crucial for maintaining a consistent seal under high pressure conditions. The gasket is equipped with four bolts in the valley, ensuring a secure fit and preventing any potential leaks. Key features include:

  • Multi-Layer Steel (MLS) construction for increased strength and resilience.
  • Viton rubber coating on the outer layers, providing heat resistance up to 250°C/482°F.
  • Uncoated center layer for variable thickness options to accommodate different sealing requirements.

Practical Uses and Target Audience

This high-quality Cometic Cylinder Head Gasket is perfect for both hobbyists and professional mechanics looking to upgrade their GM/Mercury Marine Big Block V8 engines. Its versatility makes it suitable for both aluminum heads on aluminum blocks and aluminum heads on cast iron blocks, accommodating the shearing force created by the different materials. The gasket's ability to rebound and resist corrosion ensures a long-lasting seal, reducing the risk of engine damage and costly repairs. Whether you're restoring an antique vessel or enhancing the performance of a modern marine engine, this Cometic gasket is the ideal choice for achieving optimal performance and reliability.

What Our Customers Say

January 28, 2026

Absolutely no complaints!

A really well designed and useful product.

- Mylo P..

January 28, 2026

Absolutely no complaints!

Excellent value for this level of quality.

- Nicole Z..

January 28, 2026

Absolutely no complaints!

Very well-built and feels durable.

- Luke O..

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