

Specifications
- Brand
- Cometic Gasket
- Part #
- C5712-036
- UPC
- 191070137489

Cometic Pontiac 400/428/455 V8 .036in MLS Cylinder Head Gasket - 4.300in Bore
$101.31
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Cometic MLS head gasket for Pontiac 400/428/455 V8 engines. Features Viton coating and .036in thickness.
Key Features
- Fits 1968-1979 Pontiac Firebird, 1968-1973 Pontiac GTO, and 1968-1977 Pontiac Grand Prix, among other vehicles.
- Multi-Layer Steel (MLS) construction offers increased strength and corrosion resistance.
- Outer layers are coated with heat-resistant Viton rubber for a reliable seal.
- Compressed operating thickness is .036 inches.
- Designed for a 4.300-inch bore.
- Suitable for aluminum heads to aluminum blocks and aluminum heads to cast iron blocks.
⚠️ 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
Product Details
Cometic Gasket is known for making well-built sealing solutions for performance engines. This Multi-Layer Steel (MLS) head gasket is designed for Pontiac 400, 428, and 455 cubic inch V8 engines, featuring a 4.300-inch bore and a compressed thickness of .036 inches. It's built to handle the demands of high-output applications and is suitable for various combinations of aluminum and cast iron engine blocks and heads.
This gasket uses multiple layers of stainless steel for increased strength and resistance to corrosion. The outer layers are coated with Viton, a heat-resistant rubber material that can handle temperatures up to 482 degrees Fahrenheit, ensuring a strong seal even in harsh conditions. The center layer is stainless steel and can be varied to achieve different thicknesses, like the .036 inches on this particular gasket. Because it's an MLS design, it doesn't require any additional sealants, making installation more straightforward.
This gasket fits a wide range of vehicles, including popular models like the Pontiac Firebird, GTO, and Grand Prix from the late 60s through the late 70s, as well as some Buick and Oldsmobile models from 1975. It's a solid option for anyone rebuilding or working on the top end of these classic Pontiac V8s.
Specifications
- Brand
- Cometic Gasket
- Manufacturer Part #
- C5712-036
- UPC
- 191070137489
Frequently Asked Questions
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Cometic Pontiac 400/428/455 V8 .036in MLS Cylinder Head Gasket - 4.300in Bore


