# Cometic Buick 400/430/455 V8 4.400 inch Bore .027 inch MLS Head Gasket

Comprised of multiple embossed layers of stainless steel with the outer layers utilizing a Viton rubber coating. Compressed operating thickness is 0.098". Cometic MLS (Multi-Layer Steel) Head Gaskets provide maximum sealing performance for todays high output engines and require no sealants. MLS gaskets are ideal for both aluminum heads to aluminum blocks and aluminum heads to cast iron blocks. They can withstand the shearing force created by the two materials. MLS gaskets have increased strength because they are comprised of multiple layers of stainless steel; which also creates the ability to rebound and resist corrosion. The outer layers are embossed and coated on both sides with Viton (a flour elastomer rubber based material that is heat resistant to 250 C/ 482 F). Viton is designed to meet the demands of a variety of harsh sealing environments, load conditions, and surface finishes. The center or shim layer is uncoated stainless steel, which can be varied to accommodate multiple thickness requirements.

-   The embossed outer layers of the gaskets meet the demands of a variety of harsh sealing environments, load conditions, and surface finishes
-   The center or shim layer is an uncoated stainless steel layer which can be varied to accommodate multiple thickness requirements
-   Requires less clamp load creating less bore distortion
-   Conforms load distribution across the sealing area
-   Embossed Outer Layers Coated w/Viton

This Part Fits:

Year

Make

Model

Submodel

1971-1973

Buick

Centurion

Base

1973-1974

Buick

Century

Base

1973-1974

Buick

Century

Luxus

1968-1974

Buick

Electra

225

1968-1974

Buick

Electra

225 Custom

1974

Buick

Electra

225 Limited

1967,1973

Buick

Electra

Base

1967

Buick

Electra

Custom

1970-1974

Buick

Estate Wagon

Base

1967

Buick

Gran Sport

Base

1968-1969

Buick

GS 400

Base

1970-1972

Buick

GS 455

Base

1970

Buick

GS 455

GSX

1970-1974

Buick

LeSabre

Base

1970-1973

Buick

LeSabre

Custom

1974

Buick

LeSabre

Luxus

1973-1974

Buick

Regal

Base

1967-1974

Buick

Riviera

Base

1971

Buick

Riviera

Gran Sport

1970

Buick

Skylark

350

1967-1968,1970-1971

Buick

Skylark

Base

1968,1970-1971

Buick

Skylark

Custom

1968-1970

Buick

Sportwagon

Base

1968-1969

Buick

Sportwagon

Custom

1967-1969

Buick

Wildcat

Base

1967-1970

Buick

Wildcat

Custom

## Details

- **Price:** 159.26 CAD
- **Vendor:** Cometic Gasket
- **Type:** Head Gaskets

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 159.26 CAD | In stock |

## Images

- Photo - Primary
- Photo - Primary
- Photo - Primary
- Photo - Primary
- Photo - Primary
- User 9
- Installation Instructions
- Logo Image

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> Source: [Standard Auto Part](https://www.standardautopart.com/products/cometic-buick-400-430-455-v8-4-400-inch-bore-027-inch-mls-head-gasket)
> Updated: 2026-06-26