What is the compressed thickness of this head gasket?

The compressed operating thickness for this Cometic MLS head gasket is 0.066 inches. This measurement is important for ensuring proper compression ratio and valve-to-piston clearance.

Do I need to use any sealant with this gasket?

No, Cometic MLS head gaskets are designed to provide maximum sealing performance without the need for additional sealants. The Viton coating on the outer layers ensures a tight seal against the engine block and cylinder head.

What types of cylinder head and block materials can this gasket be used with?

This gasket is ideal for applications using aluminum heads paired with either aluminum blocks or cast iron blocks. The multi-layer steel construction is designed to withstand the shearing forces that can occur between these different materials.

Specifications

Brand: Cometic Gasket
Part #: C5447-066
UPC: 191070126933

Cometic Chrysler Gen-2 Hemi .066in MLS Cylinder Head Gasket - 4.500in Bore

Name: Cometic Chrysler Gen-2 Hemi .066in MLS Cylinder Head Gasket - 4.500in Bore
Brand: Cometic Gasket
SKU: cometic-gasket-cometic-chrysler-gen-2-hemi-066in-mls-cylinder-head-gasket-4-500i-t14-807163
Price: 151.73 USD
Availability: BackOrder

$151.73

On Backorder

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Cometic Chrysler Gen-2 Hemi .066in MLS Cylinder Head Gasket - 4.500in Bore. A well-built MLS gasket for high-output Mopar V8 engines.

Key Features

Fits a range of Chrysler Gen-2 Hemi engines from 1966-1971.
Multi-Layer Steel (MLS) construction offers increased strength and corrosion resistance.
Features a 4.500-inch bore and a 0.066-inch compressed thickness.
Outer layers are coated with heat-resistant Viton for reliable sealing.
Designed for use with aluminum heads on aluminum or cast iron blocks.
No additional sealants are required 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 rebuilding the top end of a Chrysler Gen-2 Hemi engine, this Cometic Multi-Layer Steel (MLS) head gasket is a solid option. It's designed with a 4.500-inch bore and a compressed thickness of 0.066 inches, making it suitable for a range of Mopar V8 applications from the late 60s and early 70s, including models like the Dodge Charger and Plymouth Barracuda.

Cometic builds these gaskets with multiple layers of stainless steel for increased strength and corrosion resistance. The outer layers are coated with Viton, a heat-resistant rubber material that can handle high temperatures up to 482°F (250°C) and works well with different head and block materials, whether you're pairing aluminum heads with aluminum blocks or cast iron blocks. This construction means you don't need to add any extra sealants during installation, and the gasket is built to handle the demands of high-output engines.