Do these gaskets require any sealant during installation?

No, these Cometic MLS exhaust manifold gaskets are designed to seal effectively on their own. No additional sealants are required for installation, making the process more straightforward.

What are the port dimensions for these gaskets?

The port dimensions are listed as 1.450" x 1.920". There are also noted variations of 1.456" x 1.913" and 1.448" x 1.913" for specific applications.

What makes Multi-Layer Steel (MLS) gaskets better for high-pressure engines?

MLS gaskets are constructed from multiple layers of steel, which allows them to maintain a consistent seal under extreme cylinder pressures. They are also more resistant to corrosion and less likely to burn through compared to single-layer gaskets.

Cometic Oldsmobile Gen-2 Rocket V8 .030in MLS Exhaust Mani Gasket Set

Specifications

Brand: Cometic Gasket
Part #: C5904-030
UPC: 191070072780

Cometic Oldsmobile Gen-2 Rocket V8 .030in MLS Exhaust Mani Gasket Set

Name: Cometic Oldsmobile Gen-2 Rocket V8 .030in MLS Exhaust Mani Gasket Set
Brand: Cometic Gasket
Price: 46.80 USD
Availability: InStock

$46.80

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Cometic Oldsmobile Gen-2 Rocket V8 .030in MLS Exhaust Mani Gasket Set. These multi-layer steel gaskets resist corrosion and won't burn through.

Key Features

Fits a wide range of Buick, Cadillac, Chevrolet, GMC, and Oldsmobile vehicles.
Multi-layer steel (MLS) construction resists corrosion and maintains torque.
Designed to withstand extreme cylinder pressures without burning through.
No sealants are required for installation.
Port dimensions are 1.450" x 1.920", with slight variations noted.
This gasket set is .030 inches thick.

⚠️ 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 this fit your vehicle?

Product Details

Starting with the multi-layer steel (MLS) construction, these Cometic exhaust manifold gaskets are built to handle the high pressures found in engines like the Oldsmobile Gen-2 Rocket V8. The MLS design means they maintain their torque setting and resist corrosion, so you won't have to worry about them burning through or pushing out, even with different combinations of cylinder head and exhaust manifold materials. They're designed to seal effectively without needing any additional sealants.

This particular set is .030 inches thick and features port dimensions of 1.450" x 1.920", with some variations noted at 1.456" x 1.913" and 1.448" x 1.913". These gaskets are a solid option for a wide range of GM vehicles from the 1970s and early 80s, including models like the Buick LeSabre, Chevrolet Impala, and Oldsmobile Cutlass Supreme. They are designed to fit right without any fuss.