
Specifications
- Brand
- Cometic Gasket
- Part #
- C5674-045
- UPC
- 191070136932

Cometic AMC 290/304/343/360 Gen-2/3 V8 .045in MLS Cylinder Head Gasket - 4.140in Bore
$103.81
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Cometic AMC 290/304/343/360 V8 .045in MLS Head Gasket - 4.140in Bore. Built with multiple stainless steel layers and Viton coating for a strong seal.
Key Features
- Fits a wide range of AMC and Jeep V8 engines including 290, 304, 343, and 360 Gen-2/3 models.
- Multi-Layer Steel (MLS) construction with embossed outer layers coated in heat-resistant Viton.
- Designed for a 4.140-inch bore and has a compressed operating thickness of 0.098 inches.
- The Viton coating can withstand temperatures up to 250 C (482 F).
- No additional sealants are required for installation.
- Suitable for sealing aluminum heads to aluminum blocks or 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
This Cometic Multi-Layer Steel (MLS) head gasket is built with embossed outer layers coated in Viton, a heat-resistant rubber material that can handle temperatures up to 482 degrees Fahrenheit. It's designed for AMC 290, 304, 343, and 360 Gen-2/3 V8 engines with a 4.140-inch bore, and it has a compressed thickness of 0.098 inches. This gasket is ideal for sealing aluminum heads to aluminum blocks or aluminum heads to cast iron blocks, as it can manage the shearing forces that come from those material combinations.
The multiple layers of stainless steel give this gasket increased strength and the ability to rebound, helping it resist corrosion and maintain a seal under high output conditions. Because it's an MLS design, it doesn't require any additional sealants, making installation more straightforward. The center shim layer is uncoated stainless steel and can be varied to meet different thickness needs, which is how this gasket achieves its specific 0.045-inch thickness specification.
This gasket fits a wide range of American Motors and Jeep vehicles from the late 1960s through the early 1990s, including models like the Jeep Cherokee, Jeep Wagoneer, and American Motors Matador. It's a solid option for rebuilding or repairing the top end of these classic V8 engines.
Specifications
- Brand
- Cometic Gasket
- Manufacturer Part #
- C5674-045
- UPC
- 191070136932
Frequently Asked Questions
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Cometic AMC 290/304/343/360 Gen-2/3 V8 .045in MLS Cylinder Head Gasket - 4.140in Bore

