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Cometic C5645-040 MLS Cylinder Head Gasket GM Bore Thick - LT1/LT4 Gen-2 4.040 040

(1993-1996 Chevrolet Camaro; 1992-1996 Chevrolet Corvette; 1994-1996 Chevrolet Impala; 1994-1996 Chevrolet Caprice + 4 more models)

Part of: Cometic MLS Cylinder Head Gasket Bore Honda

Other options in this family: Cometic C4311-040 Cometic C4251-030 Cometic C4232-030 Cometic C4962-028 Cometic C5434-051

Manufacturer

Picture for manufacturer Cometic

Part Number

C5645-040
16 reviews
Sale Price

$96.72

1 left at this price

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Usually delivered within 2 days

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Product Details

The Cometic C5645-040 is a high-performance Multi-Layer Steel (MLS) cylinder head gasket engineered specifically for GM LT1 and LT4 Generation-2 small block V8 engines. This precision-manufactured gasket features a 4.040-inch bore diameter and .040-inch compressed thickness, making it ideal for performance builds and engine rebuilds requiring precise compression control.

Key Features:

  • Multi-Layer Steel (MLS) construction provides superior sealing and durability under high cylinder pressures
  • 4.040-inch bore diameter accommodates standard and slightly oversized cylinders
  • .040-inch compressed thickness allows for precise compression ratio tuning
  • Designed specifically for GM LT1 and LT4 Generation-2 small block V8 engines (1992-1997)
  • Viton rubber beading around combustion chambers and fluid passages for enhanced sealing
  • Stainless steel construction resists corrosion and withstands extreme temperatures
  • Embossed sealing beads provide consistent clamping force distribution

Cometic MLS head gaskets are a preferred choice among engine builders and performance enthusiasts for their proven reliability in high-performance, turbocharged, and supercharged applications. The multi-layer design allows the gasket to adapt to block and head surface imperfections while maintaining excellent sealing characteristics. This gasket is ideal for street performance, racing, and forced induction applications where precise sealing is critical.

Products specifications

Fits

1993-1996 Chevrolet Camaro; 1992-1996 Chevrolet Corvette; 1994-1996 Chevrolet Impala; 1994-1996 Chevrolet Caprice; 1994 Chevrolet Commercial Chassis; 1993-1996 Pontiac Firebird; 1994-1996 Buick Roadmaster; 1994-1996 Buick Commercial Chassis

Prop 65

WARNING: Cancer and Reproductive Harm - www.p65warnings.ca.gov

Material

Multi-layer Steel

Had no problems with ordering the products I requested

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GREAT PRICE AND WERE JUST WHAT I ORDERED.THANKS FROM A SATISFIED CUSTOMER.

So far so good.

Some of the parts that I ordered did not match the picture shown. Customer service was helpful and provided return postage. I have returned the parts and order the correct ones.

so far so good, we'll see how long it takes to get hear and how well it fits

EASY ORDERING

Some item descriptions are incomplete making the shopping experience a bit confusing. Otherwise, there’s a lot of options, and check out is quick and simple.

They had the lowest price by far! Quick shipment! I am going back for more. Thanks!<br><br>Order 6489

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Seems quick and uncomplicated

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I only gave them a 3 star raring on their shipping because I went on their site on Tuesday and the order said it had not been shipped. On Wednesday I received my shipment. The left hand needs to figure out what the right hand is doing. Other than that, GREAT

Fast shipping and good prices. I would shop this site again.

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