What is the compressed thickness of this head gasket?

The compressed operating thickness of this Cometic MLS-5 head gasket is 0.070 inches. This measurement is critical for maintaining the correct compression ratio in your engine.

Does this gasket require any sealant?

No, this Cometic MLS-5 head gasket is designed to provide maximum sealing performance without the need for additional sealants. The Viton coating on the outer layers ensures a tight seal on its own.

What is the benefit of the Viton coating on the gasket?

The Viton coating on the outer layers of the gasket is a heat-resistant rubber material that can withstand high temperatures, up to 482°F (250°C). This helps ensure a durable and reliable seal in demanding engine conditions.

Specifications

Brand: Cometic Gasket
Part #: C5248-070
UPC: 191070021757

Cometic Chevy Small Block 4.165 inch Bore .070 inch MLS-5 Head Gasket (w/All Steam Holes)

Name: Cometic Chevy Small Block 4.165 inch Bore .070 inch MLS-5 Head Gasket (w/All Steam Holes)
Brand: Cometic Gasket
SKU: cometic-gasket-cometic-chevy-small-block-4-165-inch-bore-070-inch-mls-5-head-gas-t14-279194
Price: 131.62 USD
Availability: BackOrder

$131.62

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Cometic Chevy Small Block V8 head gasket with a 4.165 inch bore and 0.070 inch thickness. Features multi-layer steel construction with Viton coating for a strong seal.

Key Features

Fits a wide range of Chevrolet and GMC Small Block V8 vehicles from 1980-1986.
Multi-layer steel (MLS) construction offers increased strength and corrosion resistance.
Outer layers are embossed and coated with heat-resistant Viton for a reliable seal.
Compressed operating thickness is 0.070 inches with a 4.165 inch bore.
Designed to seal effectively between aluminum heads and aluminum or cast iron blocks.
Does not require additional sealants for installation.

⚠️ 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

If you're working on a Chevrolet Gen-1 Small Block V8 engine, this Cometic MLS-5 head gasket is built to handle the demands of a high-output application. It's designed with a 4.165 inch bore and a compressed thickness of 0.070 inches, fitting a wide range of vehicles from the 1980s, including models like the Chevrolet Camaro, GMC C1500, and Buick Century.

This gasket uses a multi-layer steel (MLS) construction, which offers increased strength and resistance to corrosion compared to traditional gaskets. The outer layers are embossed and coated with Viton, a heat-resistant rubber material that can withstand temperatures up to 482°F (250°C) and provides a reliable seal even with different head and block materials like aluminum and cast iron. The center layer is uncoated stainless steel, allowing for precise thickness control.

Because it's a multi-layer steel design with Viton coating, this gasket doesn't require any additional sealants, making installation more straightforward. It's a solid option for rebuilding or upgrading your small block Chevy's top end.