If you're diving into the world of high-output engines, the COMETIC MLS (Multi-Layer Steel) Head Gasket is one piece of hardware you won't want to overlook. I've been around the block a few times with these gaskets, and let me tell you, they deliver some serious sealing performance without the need for any sealants. Whether you’re pairing aluminum heads with aluminum blocks or mixing it up with cast iron, these gaskets handle the job like a champ.

What makes them stand out is their construction. They’re built from multiple layers of stainless steel, which not only gives them increased strength but also allows for a bit of rebound. This means they can take on the shearing forces that come from different materials without breaking a sweat. The outer layers are embossed and coated with Viton, a tough flouroelastomer rubber that can handle heat up to 250°C (482°F). This stuff is made for the harshest sealing environments, so you know it’s going to last.

The center layer is uncoated stainless steel, which can be tweaked to fit various thickness requirements. Speaking of thickness, the compressed operating thickness here is .045". Perfect for those who want to maintain performance without compromising on durability.

Now, if you’re working on a Buick with a 192, 231, or 252ci V6 engine, this gasket is a solid choice for stock and Stage I-II heads. It features a bore diameter of 3.860", making it a versatile option for a range of applications. Here’s a quick rundown of what this gasket fits:

• Buick Century (1975-1981 & 1984-1988)
• Buick Electra (1980-1990)
• Buick LaCrosse (2005-2009)
• Buick LeSabre (1976-2005)
• Buick Lucerne (2006-2008)
• Buick Park Avenue (1991-2005)
• Buick Reatta (1988-1991)
• Buick Regal (1975-1987 & 1990-2004)
• Buick Riviera (1979-1993 & 1995-1999)
• Buick Skyhawk (1975-1980)
• Buick Skylark (1975-1979)
• Cadillac DeVille (1980-1982)
• Cadillac Eldorado (1981-1982)
• Cadillac Fleetwood (1980-1982)
• Cadillac Seville (1981-1982)
• Chevrolet Camaro (1980-1981 & 1995-2002)
• Chevrolet Caprice (1980-1985)
• Chevrolet El Camino (1978-1984)
• Chevrolet Impala (1980-1985 & 2000-2005)
• Chevrolet Lumina (1998-1999)
• Chevrolet Malibu (1978-1983)
• Chevrolet Monte Carlo (1978-1987 & 1998-2005)
• Chevrolet Monza (1978-1980)
• Pontiac Bonneville (1987-2005)
• Pontiac Firebird (1977-1981 & 1989 & 1995-2002)
• Pontiac Grand Prix (1997-2008)

So, if you’re looking to keep your engine running smooth and strong, this Cometic MLS Head Gasket is definitely worth considering. It’s got the specs and the durability to back it up, and trust me, you’ll appreciate the quality when you hit the road.