

Specifications
- Brand
- Cometic Gasket
- Part #
- C5400-040
- UPC
- 191070004422

Cometic Chevrolet Gen-1 Small Block V8 .040in MLS Cylinder Head Gasket - 4.125in Bore
$87.53
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Cometic Chevrolet Gen-1 Small Block V8 .040in MLS Cylinder Head Gasket - 4.125in Bore. This multi-layer steel gasket offers reliable sealing for high-output engines.
Key Features
- Fits a wide range of Chevrolet Gen-1 Small Block V8 vehicles, along with Buick and GMC models from 1980-1986.
- Multi-Layer Steel (MLS) construction offers increased strength and rebound resistance.
- Outer layers are embossed and coated with Viton, a heat-resistant elastomer for reliable sealing.
- Compressed operating thickness is .040 inches.
- Bore size is 4.125 inches.
- Suitable for Brodix 12-23 Degree heads.
⚠️ 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
If you're working on a Chevrolet Gen-1 Small Block V8 engine, this Cometic Multi-Layer Steel (MLS) cylinder head gasket is a solid choice for rebuilding or upgrading. It's designed with a 4.125-inch bore and a compressed thickness of .040 inches, making it suitable for a wide range of applications, including those using aftermarket heads. This gasket fits many vehicles from the early 80s, like the Chevrolet C10, Camaro, and Corvette, as well as Buick and GMC models from the same era.
What sets this gasket apart is its construction. It's made from multiple layers of stainless steel, which gives it strength and helps it resist corrosion. The outer layers are coated with Viton, a heat-resistant rubber material that can handle tough sealing conditions and works well with different head and block materials, like aluminum and cast iron. This multi-layer design means it seals effectively without needing any extra sealants, and the center layer can be varied for different thickness needs. The water ports are undersized to give you flexibility when customizing for aftermarket heads.
Specifications
- Brand
- Cometic Gasket
- Manufacturer Part #
- C5400-040
- UPC
- 191070004422
Frequently Asked Questions
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Cometic Chevrolet Gen-1 Small Block V8 .040in MLS Cylinder Head Gasket - 4.125in Bore

