

Specifications
- Brand
- Cometic Gasket
- Part #
- C5271-040
- UPC
- 191070075088

Cometic Chevy Gen-1 Small Block V8 .040in MLS Cylinder Head Gasket - 4.125in Bore
$90.06
Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.
Cometic Gen-1 Small Block V8 MLS head gasket with a 4.125in bore and .040in compressed thickness. Built for high output engines.
Key Features
- Fits many Chevrolet and GMC Gen-1 Small Block V8 vehicles.
- Multi-Layer Steel (MLS) construction for increased strength and corrosion resistance.
- Outer layers are coated with heat-resistant Viton elastomer.
- Compressed operating thickness is 0.040 inches.
- Features steam holes and a valve pocketed bore.
- 4.125 inch bore size.
⚠️ 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
This Cometic Multi-Layer Steel (MLS) head gasket is built with multiple embossed stainless steel layers, featuring a Viton rubber coating on the outer layers. It has a compressed operating thickness of 0.040 inches and includes steam holes. MLS gaskets are designed to provide maximum sealing performance for today's high-output engines and don't require additional sealants, making them suitable for both aluminum-to-aluminum and aluminum-to-cast iron head and block combinations. They can handle the shearing forces that occur between different metal types.
The increased strength of these MLS gaskets comes from their multiple stainless steel layers, which also allow them to rebound and resist corrosion. The outer layers are embossed and coated on both sides with Viton, a heat-resistant elastomer capable of withstanding temperatures up to 482°F (250°C) in demanding sealing environments. The center layer is uncoated stainless steel, which can be varied to achieve different thickness requirements. This particular gasket has a 4.125-inch bore and is valve pocketed.
This gasket fits a wide range of Chevrolet and GMC vehicles from the early 1980s, including models like the Chevrolet C10, Camaro, and GMC C1500. It's a solid option when you need reliable sealing for your Gen-1 Small Block V8.
Specifications
- Brand
- Cometic Gasket
- Manufacturer Part #
- C5271-040
- UPC
- 191070075088
Frequently Asked Questions
You Might Also Like
Similar products from the same category
Cometic Chevy Gen-1 Small Block V8 .040in MLS Cylinder Head Gasket - 4.125in Bore


