What is the compressed thickness of this head gasket?

The compressed operating thickness for this Cometic MLS head gasket is 0.098 inches. This measurement is important for ensuring proper valve-to-piston clearance and cylinder head sealing.

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

Yes, Cometic MLS head gaskets are designed to work effectively with both aluminum heads on aluminum blocks and aluminum heads on cast iron blocks. They are built to withstand the shearing forces that can occur between these different materials.

Does this gasket require any special sealants during installation?

No, this Cometic MLS head gasket is designed to provide maximum sealing performance without the need for additional sealants. Its multi-layer construction and Viton coating ensure a reliable seal on its own.

Specifications

Brand: Cometic Gasket
Part #: C5761-056
UPC: 191070038328

Cometic GM L18 Vortec 8100 Gen-VII Big Block V8 .056in MLS Cylinder Head Gasket - 4.280in Bore - RHS

Name: Cometic GM L18 Vortec 8100 Gen-VII Big Block V8 .056in MLS Cylinder Head Gasket - 4.280in Bore - RHS
Brand: Cometic Gasket
SKU: cometic-gasket-cometic-gm-l18-vortec-8100-gen-vii-big-block-v8-056in-mls-cylinde-t14-803599
Price: 152.35 USD
Availability: BackOrder

$152.35

On Backorder

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

Cometic Gasket is known for its multi-layer steel head gaskets. This .056in MLS head gasket for GM L18 Vortec 8100 Big Block V8 features a 4.280in bore.

Key Features

Fits Chevrolet Avalanche 2500, Silverado 2500 HD, Suburban 2500, and GMC Sierra 2500 HD, among other vehicles.
Cometic MLS (Multi-Layer Steel) head gasket construction offers increased strength and corrosion resistance.
Outer layers are embossed and coated with Viton, a heat-resistant rubber material rated up to 482°F (250°C).
The center shim layer is uncoated stainless steel, allowing for varied thickness requirements.
Designed for aluminum heads to aluminum blocks and aluminum heads to cast iron blocks.
Requires no additional sealants 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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About this part

Product Details

Cometic Gasket has built a reputation for making solid engine sealing solutions, especially their multi-layer steel (MLS) head gaskets. This particular gasket is built for the GM L18 Vortec 8100 Gen-VII Big Block V8 engine, featuring a 4.280-inch bore and a compressed thickness of .056 inches. It's designed to handle the demands of high-output engines and fits a range of popular trucks and SUVs like the Chevrolet Silverado 2500 HD and GMC Sierra 3500.

What makes these MLS gaskets stand out is their construction. They're made from multiple layers of stainless steel, which gives them increased strength and the ability to rebound, helping them resist corrosion. The outer layers are coated with Viton, a heat-resistant rubber material that can handle temperatures up to 482 degrees Fahrenheit and works well with different engine materials like aluminum and cast iron. This construction means you don't need any extra sealants for installation, and it's built to seal effectively even with aluminum heads on cast iron blocks.