

Specifications
- Brand
- Cometic Gasket
- Part #
- C5645-027
- UPC
- 191070032937

Cometic 92-96 GM LT1 Small Block 4.040 inch Bore .027 inch MLS Head Gasket (w/Valve Pockets)
$90.06
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Cometic MLS head gasket for 92-96 GM LT1 Small Block V8 engines. 4.040" bore, .027" compressed thickness.
Key Features
- Fits 1992-1997 Buick, Chevrolet, and Pontiac vehicles with LT1/LT4 Gen-2 Small Block V8 engines.
- Multi-Layer Steel (MLS) construction offers increased strength and corrosion resistance.
- Outer layers are coated with Viton, a heat-resistant elastomer, for a reliable seal.
- Compressed operating thickness is 0.027 inches.
- Bore size is 4.040 inches, suitable for the specified GM small block V8 engines.
- Designed for use with aluminum heads to aluminum blocks or 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
If you're rebuilding the top end of your 90s GM LT1 or LT4 small block V8, like those found in a Corvette, Camaro, or Firebird, a solid head gasket is crucial for sealing combustion pressure. This Multi-Layer Steel (MLS) head gasket from Cometic is built to handle the demands of these engines.
Cometic 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 seals well against aluminum or cast iron blocks and heads, even with different expansion rates. This gasket has a compressed thickness of 0.027 inches and a bore size of 4.040 inches, designed to fit the specific needs of the LT1/LT4 engine family. Because it's an MLS gasket, it doesn't require any additional sealants, making installation more straightforward.
This gasket is a well-built option for your GM V8 rebuild, offering reliable sealing for performance applications.
Specifications
- Brand
- Cometic Gasket
- Manufacturer Part #
- C5645-027
- UPC
- 191070032937
Frequently Asked Questions
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Cometic 92-96 GM LT1 Small Block 4.040 inch Bore .027 inch MLS Head Gasket (w/Valve Pockets)

