Do I need to use any sealant with this Cometic head gasket?

No, Cometic MLS head gaskets are designed to provide maximum sealing performance and do not require additional sealants. The Viton rubber coating on the outer layers ensures a tight seal on its own.

What is the compressed thickness of this gasket?

The compressed operating thickness of this Cometic head gasket is 0.120 inches. This measurement is important for maintaining the correct compression ratio in your engine.

Is this gasket suitable for engines with different block and head materials?

Yes, Cometic MLS head gaskets are ideal for applications with aluminum heads to aluminum blocks, as well as aluminum heads to cast iron blocks. They are built to withstand the shearing forces created by these material combinations.

Specifications

Brand: Cometic Gasket
Part #: C5870-120

Cometic Ford 221 Flathead V8 .120in MLS Cylinder Head Gasket 3.156in Bore

Name: Cometic Ford 221 Flathead V8 .120in MLS Cylinder Head Gasket 3.156in Bore
Brand: Cometic Gasket
SKU: cometic-gasket-cometic-ford-221-flathead-v8-120in-mls-cylinder-head-gasket-3-156-t14-721363
Price: 249.06 USD
Availability: BackOrder

$249.06

On Backorder

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

Cometic Ford 221 Flathead V8 MLS head gasket. Features Viton coating and a 0.120" compressed thickness for reliable sealing.

Key Features

Fits a wide range of 1930s-1950s Ford and Mercury vehicles with the 221 Flathead V8 engine.
Multi-Layer Steel (MLS) construction offers increased strength and corrosion resistance.
Outer layers are coated with Viton, a heat-resistant elastomer, for reliable sealing without sealants.
Compressed operating thickness is 0.120 inches.
Bore size is 3.156 inches.
Suitable for both aluminum heads to aluminum blocks and aluminum heads to cast iron 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

When you're rebuilding the top end of your Ford 221 Flathead V8, a reliable head gasket is crucial for sealing combustion pressures and coolant passages. This Multi-Layer Steel (MLS) gasket from Cometic is built to handle the demands of these classic engines, offering a solid option for your project.

This gasket is constructed with 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 harsh sealing environments and varying surface finishes, ensuring a tight seal without needing additional sealants. With a compressed operating thickness of 0.120 inches and a bore size of 3.156 inches, it's designed to fit the Ford 221 Flathead V8 engine. MLS gaskets are well-suited for both aluminum and cast iron block applications, as they can manage the shearing forces that can occur between different metals.

This Cometic head gasket fits a wide range of classic Ford and Mercury vehicles from the late 1930s through the mid-1950s, including models like the Ford F-1, Ford Customline, and Mercury Monterey. Ensure you have the correct gasket for your specific build to maintain proper engine compression and cooling.