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Est. 1957
Cometic Gasket

Cometic Chevy Gen1 Small Block V8 .040in MLS Cylinder Head Gasket - 4.160in Bore

$95.21

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Cometic Chevy Gen1 Small Block V8 .040in MLS head gasket with a 4.160in bore. Features Viton-coated stainless steel layers for maximum sealing.

Key Features

  • Fits 57+ vehicle make/model combinations.
  • Multi-Layer Steel (MLS) construction for increased strength and durability.
  • Embossed outer layers are coated with heat-resistant Viton rubber.
  • Designed for a 4.160-inch bore size.
  • Compressed operating thickness is .040 inches.
  • Suitable for aluminum heads to aluminum or 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

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About this part

Product Details

This Cometic Multi-Layer Steel (MLS) head gasket is designed for Chevy Gen 1 Small Block V8 engines, specifically for applications using a 4.160-inch bore and a compressed thickness of .040 inches. It's built with multiple layers of stainless steel, which gives it increased strength and the ability to resist corrosion and rebound. The outer layers are coated with Viton, a heat-resistant rubber material that can handle tough sealing environments and various surface finishes, ensuring a reliable seal without needing additional sealants. This type of gasket is well-suited for pairings of aluminum heads with either aluminum or cast iron blocks, as it can manage the shearing forces that can occur between different metals.

The construction of this MLS gasket means it's ready for high-output engines. The stainless steel layers provide a solid foundation, while the Viton coating on the outer surfaces offers excellent sealing performance and durability. The center layer is also stainless steel, allowing for adjustments in thickness if needed for specific builds, though this particular gasket is set at a .040-inch compressed operating thickness. It's a solid option for rebuilding or upgrading your engine's top end, offering dependable sealing for a range of vehicles including models like the Chevrolet Camaro, GMC C1500, and Buick Regal from the early to mid-1980s.

Specifications

Brand
Cometic Gasket
Manufacturer Part #
C5407-040
UPC
191070126032

Frequently Asked Questions

Cometic Chevy Gen1 Small Block V8 .040in MLS Cylinder Head Gasket - 4.160in Bore

$95.21