What material is used for the sealing surface of these exhaust port covers?

The outer layers of the gasket are embossed and coated with a Viton rubber material. This coating is heat resistant up to 482°F (250°C) and is designed to handle harsh sealing environments.

Are these exhaust port covers suitable for all GM small block engines?

These covers are specifically designed for GM small block engines that use 18-degree cylinder heads. It's important to verify your cylinder head angle before purchasing.

What makes stainless steel a good choice for these gaskets?

Stainless steel is used for increased strength, its ability to rebound, and its resistance to corrosion. This construction helps ensure a reliable seal under demanding conditions.

Cometic GM Small Block Aluminum/Rubber Exhaust Port Cover Set - 18 Degree Heads

Specifications

Brand: Cometic Gasket
Part #: C5258
UPC: 191070545703

Cometic GM Small Block Aluminum/Rubber Exhaust Port Cover Set - 18 Degree Heads

Name: Cometic GM Small Block Aluminum/Rubber Exhaust Port Cover Set - 18 Degree Heads
Brand: Cometic Gasket
Price: 64.84 USD
Availability: InStock

$64.84

On Backorder

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Cometic GM Small Block exhaust port cover set for 18 degree heads. Features stainless steel layers with Viton coating.

Key Features

Fits 118+ vehicle make/model combinations.
Constructed with multiple layers of stainless steel for strength and corrosion resistance.
Outer layers are embossed and coated with Viton rubber for high-temperature sealing.
Viton coating is heat resistant up to 482°F (250°C).
Designed for GM small block engines with 18-degree cylinder heads.
Asbestos-free construction.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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Will this fit your vehicle?

Product Details

Starting with stainless steel layers, this Cometic exhaust port cover set is built for strength and resistance to corrosion. The outer layers are embossed and coated with Viton rubber, a material that can handle temperatures up to 482°F (250°C) and works well in tough sealing conditions, even on varied surface finishes. This makes them a solid choice for GM small block engines with 18-degree cylinder heads.

This set is designed to fit a wide range of GM vehicles, including popular models like the Chevrolet Camaro, Chevrolet C10 Pickup, and Checker Marathon. They are asbestos-free, offering a safer alternative for sealing your exhaust ports. If you're working on a GM small block with 18-degree heads, this cover set offers a well-built solution for your exhaust sealing needs.