

Specifications
- Brand
- Cometic Gasket
- Part #
- C5721-120
- UPC
- 191070137922

Cometic Buick 3800 Series II/III V6 .120in MLS Cylinder Head Gasket - 3.840in Bore - RHS
$241.38
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Cometic Multi-Layer Steel head gasket for Buick 3800 Series II/III V6. .120in thick, 3.840in bore, RHS. Direct fit.
Key Features
- Fits 1996-2004 Buick, Chevrolet, Oldsmobile, and Pontiac vehicles with the 3800 Series II/III V6 engine.
- Multi-Layer Steel (MLS) construction offers increased strength and resistance to corrosion.
- Outer layers are coated with Viton, a heat-resistant elastomer capable of withstanding temperatures up to 482°F (250°C).
- Compressed operating thickness is 0.120 inches.
- Features a 3.840-inch bore diameter.
- Designed for the right-hand side of the engine.
⚠️ 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
Product Details
Built with multiple layers of stainless steel, this Cometic Multi-Layer Steel (MLS) head gasket features outer layers coated with Viton, a heat-resistant elastomer. This construction is designed to handle the demands of high-output engines and provides a compressed operating thickness of 0.120 inches with a 3.840-inch bore, specifically for the right side of Buick 3800 Series II and III V6 engines.
MLS gaskets are known for their strength and ability to rebound, resisting corrosion and the shearing forces that can occur between aluminum heads and cast iron blocks, or between two aluminum components. The Viton coating on the outer layers is engineered to perform in harsh sealing environments and under various load conditions, meeting the needs of engines that push beyond stock performance. These gaskets do not require any additional sealants, simplifying installation.
This gasket is a solid option for a wide range of vehicles, including models like the Buick LeSabre, Pontiac Grand Prix, and Chevrolet Camaro from the mid-90s through the early 2000s. Ensure you check the full fitment list to confirm compatibility with your specific vehicle.
Specifications
- Brand
- Cometic Gasket
- Manufacturer Part #
- C5721-120
- UPC
- 191070137922
Frequently Asked Questions
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Cometic Buick 3800 Series II/III V6 .120in MLS Cylinder Head Gasket - 3.840in Bore - RHS

