Cometic AMC 390/401 Gen-3 V8 4.250in Bore .027in MLS Cylinder Head Gasket

This Cometic Multi-Layer Steel (MLS) head gasket is what you get when you need a solid seal for your AMC 390 or 401 Gen-3 V8 engine. It's built with multiple layers of stainless steel, giving it the strength to handle high-output conditions. The outer layers are coated with Viton, a heat-resistant rubber material that can handle temperatures up to 482°F, ensuring a reliable seal even in tough environments. This gasket has a compressed operating thickness of 0.027 inches and is designed for a 4.250-inch bore, making it suitable for a wide range of American Motors and Jeep vehicles from the late 60s through the early 90s.

The multi-layer design of this gasket offers increased strength and the ability to rebound, which helps it maintain a good seal. Because it's made of stainless steel, it also resists corrosion. This type of gasket is ideal whether you're pairing aluminum heads with an aluminum block or aluminum heads with a cast iron block, as it can handle the shearing forces that can occur between different metals. You won't need any extra sealants with this gasket; it's designed to seal effectively on its own.