# Cometic Pontiac 326/389/421 V8 .098in MLS Cylinder Head Gasket - 4.300in Bore

The HP shim technology increases clampload around the combustion chamber, thereby increasing the sealability of the head gasket around the open deck block.

-   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
-   Coated On Both Sides w/Viton

This Part Fits:

Year

Make

Model

Submodel

1959-1966

Pontiac

Bonneville

Base

1959-1962

Pontiac

Bonneville

Custom

1959-1966

Pontiac

Bonneville

Safari

1964-1966

Pontiac

Catalina

2+2

1959-1966

Pontiac

Catalina

Base

1959-1966

Pontiac

Catalina

Safari

1962-1966

Pontiac

Catalina

Ventura

1962-1966

Pontiac

Grand Prix

Base

1964-1966

Pontiac

GTO

Base

1959-1966

Pontiac

Star Chief

Base

1966

Pontiac

Star Chief

Executive

1961,1963-1966

Pontiac

Tempest

Base

1964-1965

Pontiac

Tempest

Custom

1961

Pontiac

Tempest

LeMans

1961,1963-1966

Pontiac

Tempest

Safari

1960-1961

Pontiac

Ventura

Base

## Details

- **Price:** 233.45 CAD
- **Vendor:** Cometic Gasket
- **Type:** Head Gaskets

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 233.45 CAD | In stock |

## Images

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

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> Source: [Standard Auto Part](https://www.standardautopart.com/products/cometic-pontiac-326-389-421-v8-098in-mls-cylinder-head-gasket-4-300in-bore)
> Updated: 2026-06-26