What is the compressed thickness of this head gasket?

The compressed operating thickness of this Cometic head gasket is 0.042 inches. This measurement is critical for ensuring proper compression ratios and valve-to-piston clearance in your engine.

Can I use this gasket with different head and block materials?

Yes, this MLS gasket is designed to work effectively with both aluminum heads on aluminum blocks and aluminum heads on cast iron blocks. The multi-layer steel construction and Viton coating help manage the stresses between dissimilar materials.

Does this gasket require any sealant?

No, Cometic's MLS head gaskets are designed to provide maximum sealing performance without the need for additional sealants. The embossed outer layers coated with Viton create a reliable seal on their own.

Specifications

Brand: Cometic Gasket
Part #: C5334-042
UPC: 191070124755

Cometic GM Gen-V/VI Big Block V8 .042in MLS Cylinder Head Gasket - 4.630in Bore

Name: Cometic GM Gen-V/VI Big Block V8 .042in MLS Cylinder Head Gasket - 4.630in Bore
Brand: Cometic Gasket
SKU: cometic-gasket-cometic-gm-gen-v-vi-big-block-v8-042in-mls-cylinder-head-gasket-4-t14-806636
Price: 114.06 USD
Availability: BackOrder

$114.06

On Backorder

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

Cometic GM Gen-V/VI Big Block V8 .042in MLS Head Gasket - 4.630in Bore. Built with multiple stainless steel layers and Viton coating for reliable sealing.

Key Features

Fits a wide range of GM Gen-V/VI Big Block V8 engines.
Multi-Layer Steel (MLS) construction offers increased strength and corrosion resistance.
Viton rubber coating on outer layers provides excellent heat resistance and sealing.
Compressed operating thickness is 0.042 inches.
Bore size is 4.630 inches.
Designed for use with both aluminum and cast iron engine 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

If you're working on a GM Gen-V or Gen-VI Big Block V8, this Multi-Layer Steel (MLS) head gasket from Cometic is a solid choice for sealing your cylinder heads. It's designed with a compressed thickness of 0.042 inches and a bore size of 4.630 inches, making it suitable for a range of these powerful V8 engines, including applications in Chevrolet and GMC trucks from the early 90s through the mid-90s.

What makes these MLS gaskets stand out is their construction. They're made from multiple layers of stainless steel, which gives them strength and helps them resist corrosion. The outer layers are coated with Viton, a heat-resistant rubber material that can handle tough sealing jobs 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 use any extra sealants; the gasket is ready to seal right out of the box.