

Specifications
- Brand
- Cometic Gasket
- Part #
- C5489-086
- UPC
- 191070084417

Cometic GM LS Gen-3/4 Small Block V8 .086in MLS Cylinder Head Gasket - 4.100in Bore
$135.77
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Cometic GM LS Gen-3/4 V8 .086in MLS head gasket with 4.100in bore. Built with multiple stainless steel layers and Viton coating for a strong seal.
Key Features
- Fits 62+ vehicle make/model combinations.
- Multi-Layer Steel (MLS) construction for increased strength and durability.
- Embossed outer layers coated with heat-resistant Viton rubber.
- Compressed operating thickness is 0.086 inches.
- 4.100 inch bore size.
- Suitable for aluminum heads to aluminum blocks and aluminum heads to cast iron blocks.
⚠️ 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
When you're rebuilding the top end of your GM LS Gen-3 or Gen-4 V8, you'll find a set of Cometic Multi-Layer Steel (MLS) head gaskets in this package. These gaskets are designed to provide a solid seal between your cylinder heads and engine block, crucial for maintaining compression and preventing coolant or oil leaks. They are built with multiple layers of stainless steel, which gives them the strength to handle the demands of high-output engines, and they don't require any additional sealants to do their job effectively. This makes them a good choice whether you're pairing aluminum heads with an aluminum block or aluminum heads with a cast iron block, as they can manage the different expansion rates between those materials.
The outer layers of these Cometic gaskets are embossed and coated with Viton, a heat-resistant rubber material rated up to 482 degrees Fahrenheit. This coating is tough and can handle various sealing environments, load conditions, and surface finishes you might encounter. The center layer is uncoated stainless steel, and its thickness is what determines the overall compressed gasket thickness, which is 0.086 inches for this specific part. This construction offers increased strength and the ability to rebound, while the stainless steel also helps resist corrosion. The 4.100-inch bore size is specified to match your engine's requirements.
These gaskets fit a wide range of GM vehicles, including popular models like the Chevrolet Corvette, Camaro, and Silverado trucks. They are a well-built option for anyone looking to ensure a reliable seal in their LS engine build.
Specifications
- Brand
- Cometic Gasket
- Manufacturer Part #
- C5489-086
- UPC
- 191070084417
Frequently Asked Questions
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Cometic GM LS Gen-3/4 Small Block V8 .086in MLS Cylinder Head Gasket - 4.100in Bore

