What is the compressed thickness of this head gasket?

The compressed operating thickness for this Cometic head gasket is .040 inches. This measurement is achieved through the multi-layer steel construction and the Viton coating on the outer layers.

Do I need to use any sealant with this 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 strong seal against the engine block and cylinder head.

What is the difference between the LHS and RHS head gaskets?

LHS stands for Left Hand Side, and RHS stands for Right Hand Side. These gaskets are specific to their side of the engine to ensure proper fitment and sealing for each cylinder bank.

Specifications

Brand: Cometic Gasket
Part #: C5468-040
UPC: 191070034399

Cometic Dodge 5.7L Hemi 3.950 inch Bore .040 inch MLS LHS Head Gasket

Name: Cometic Dodge 5.7L Hemi 3.950 inch Bore .040 inch MLS LHS Head Gasket
Brand: Cometic Gasket
SKU: cometic-gasket-cometic-dodge-5-7l-hemi-3-950-inch-bore-040-inch-mls-lhs-head-gas-t14-4359901
Price: 98.85 USD
Availability: BackOrder

$98.85

On Backorder — Expected to ship by May 22, 2026

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

Cometic Dodge 5.7L Hemi .040" MLS LHS head gasket. Fits a wide range of Chrysler, Dodge, Jeep, and Ram vehicles with the 5.7L Hemi engine.

Key Features

Fits 14+ vehicle make/model combinations with 5.7L Hemi engines.
Multi-Layer Steel (MLS) construction offers increased strength and corrosion resistance.
Outer layers are coated with heat-resistant Viton for a reliable seal.
Compressed operating thickness is .040 inches.
Designed for a 3.950 inch bore size.
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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Will it fit your car?

About this part

Product Details

If you're working on the top end of your Dodge, Jeep, or Ram vehicle with a 5.7L Hemi engine, this Cometic Multi-Layer Steel (MLS) head gasket is a solid choice. Specifically, this is the Left Hand Side (LHS) gasket, designed with a 3.950-inch bore and a compressed thickness of .040 inches. It's built to handle the demands of high-output engines, making it suitable for everything from daily drivers to more performance-oriented builds.

Cometic uses multiple layers of stainless steel for increased strength and resistance to corrosion. The outer layers are coated with Viton, a heat-resistant rubber material that can handle temperatures up to 482 degrees Fahrenheit. This coating helps create a strong seal against both aluminum and cast iron blocks, and it means you don't need any extra sealants during installation. The center layer is also stainless steel, and its thickness can be varied to meet different engine requirements, which is exactly what they've done here to achieve that .040-inch compressed thickness.

This gasket is designed to fit a wide variety of Chrysler, Dodge, Jeep, and Ram vehicles from the mid-2000s through the mid-2010s. It's a well-built component that aims to provide reliable sealing for your engine rebuild.