What is the compressed thickness of this head gasket?

The compressed operating thickness of this Cometic MLS head gasket is 0.051 inches. This precise thickness is important for achieving the correct compression ratio and sealing performance in your engine.

Do I need to use any sealant with this gasket?

No, this Cometic MLS 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 against the engine block and cylinder head.

What kind of engines is this gasket best suited for?

This gasket is specifically designed for high-output engines, including modified or performance-oriented Chevy Gen-1 Small Block V8 applications. Its multi-layer steel construction and Viton coating are built to withstand the stresses of increased power.

Specifications

Brand: Cometic Gasket
Part #: c5247-051
UPC: 191070051365

Cometic Chevy Small Block 4.125 inch Bore .051 inch MLS Head Gasket (w/All Steam Holes)

Name: Cometic Chevy Small Block 4.125 inch Bore .051 inch MLS Head Gasket (w/All Steam Holes)
Brand: Cometic Gasket
SKU: cometic-gasket-cometic-chevy-small-block-4-125-inch-bore-051-inch-mls-head-gaske-t14-479540
Price: 102.25 USD
Availability: BackOrder

$102.25

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 4.125 inch Bore .051 inch MLS Head Gasket (w/All Steam Holes). Built for high output engines.

Key Features

Fits a wide range of Chevrolet and GMC vehicles from 1980-1986, as well as Avanti II, Checker Marathon, and Excalibur Phaeton models.
Multi-Layer Steel (MLS) construction offers increased strength and rebound resistance.
Outer layers are embossed and coated with Viton, a heat-resistant rubber material.
Viton coating can withstand temperatures up to 482 degrees Fahrenheit.
Compressed operating thickness is 0.051 inches.
Designed for high-output engines and requires no additional sealants.

⚠️ 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

Secure CheckoutFast Shipping631-982-0042

Will it fit your car?

About this part

Product Details

Cometic Gasket is well-known for making solid sealing solutions, and this Multi-Layer Steel (MLS) head gasket is a prime example. It’s built for Chevy Gen-1 Small Block V8 engines with a 4.125 inch bore, and it comes with all the steam holes you need for proper cooling. This gasket is designed to handle the demands of high-output engines, meaning it’s a strong choice if you’re rebuilding or modifying your engine.

What makes this gasket stand out is its construction. It’s made from multiple layers of stainless steel, which gives it increased strength and the ability to rebound, helping it resist corrosion. The outer layers are coated with Viton, a heat-resistant rubber material that can handle temperatures up to 482 degrees Fahrenheit. This coating is tough and works well with different engine materials, like aluminum heads on cast iron blocks, and it means you don't need any extra sealants during installation. The compressed thickness is a precise 0.051 inches, ensuring a consistent seal.

This gasket fits a wide range of vehicles from the early 1980s, including models like the Chevrolet Camaro, GMC C1500, and Buick Regal. It’s a well-built part that’s ready to go right out of the box for your engine project.