What is the compressed thickness of this head gasket?

The compressed operating thickness for this Cometic MLS head gasket is 0.120 inches. This measurement is important for ensuring proper valve-to-piston clearance and compression ratio after installation.

Do I need to use any sealant with this Cometic head 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 robust seal against the cylinder head and block surfaces.

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

This MLS gasket is ideal for use with both aluminum cylinder heads on aluminum blocks, and also for aluminum heads on cast iron blocks. The multi-layer steel construction can handle the shearing forces created by dissimilar metals.

Specifications

Brand: Cometic Gasket
Part #: C5459-120
UPC: 191070127794

Cometic Chrysler 361/383/413/440 4.25in Bore .120in MLS Head Gasket

Name: Cometic Chrysler 361/383/413/440 4.25in Bore .120in MLS Head Gasket
Brand: Cometic Gasket
SKU: cometic-gasket-cometic-chrysler-361-383-413-440-4-25in-bore-120in-mls-head-gaske-t14-184420
Price: 249.06 USD
Availability: InStock

$249.06

Only 2 left in stock

Cometic Chrysler 361/383/413/440 MLS head gasket. .120in compressed thickness, 4.25in bore. Direct fit.

Key Features

Fits a wide range of Chrysler B/RB V8 engines from 1958-1979.
Multi-Layer Steel (MLS) construction offers increased strength and corrosion resistance.
Embossed outer layers are coated with heat-resistant Viton for reliable sealing.
Compressed operating thickness is 0.120 inches.
Designed for a 4.250 inch bore.
Suitable for both aluminum to aluminum and aluminum to cast iron head and block combinations.

⚠️ 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 your Chrysler B or RB series V8 engine, getting the head gasket right is crucial for sealing combustion pressure and coolant. This Multi-Layer Steel (MLS) head gasket from Cometic is built for those high-output applications, ensuring a solid seal between your cylinder head and block.

Cometic uses multiple layers of stainless steel for strength and corrosion resistance, which also allows the gasket to rebound and maintain sealing force. The outer layers are coated with Viton, a heat-resistant rubber material that handles tough sealing environments and various surface finishes, making it suitable for both aluminum-to-aluminum and aluminum-to-cast-iron head and block combinations. This particular gasket has a compressed thickness of 0.120 inches and is designed for a 4.250-inch bore, fitting a wide range of Chrysler B/RB engines found in vehicles like the Chrysler New Yorker, Dodge Charger, and Dodge D100 Pickup from the late 50s through the late 70s. No additional sealants are needed with this gasket.