Cometic Harley-Davidson 2018 Milwaukee 8, All Fxst w/Primary, 4.500in,.040inMls

This gasket is designed for 2018 Harley-Davidson Milwaukee 8 engines with a 4.500 inch bore, specifically for FXST models with the primary cover. It's designed to be a direct replacement, ensuring a solid seal for your engine's primary cover. Cometic uses Multi-Layer Steel (MLS) construction for these gaskets, which means they're built with multiple layers of steel, often with a special coating, to handle the pressures and temperatures found in your engine. This type of construction is known for its durability and ability to conform to sealing surfaces, which helps prevent leaks even under demanding conditions. The .030 inch thickness is a specific size that's important for maintaining correct engine clearances and compression ratios. When you're rebuilding or servicing the primary on your Milwaukee 8, having a well-made gasket like this one is crucial for a reliable seal. Make sure your engine surfaces are clean and free of old gasket material before installation to get the best possible seal.