This 2pc MLS Head Gasket is perfect for GM LS1 and LS6 engines. There are 4 packs of 2. It fits a variety of vehicles including Grand Prix, Firebird, Silverado, Lacrosse, and GTO. The gasket kit comes with a total of 10 or more bolt holes and is made of high-quality metal material for optimal performance. The uncoated finish gives it a sleek look and it is designed for use in the engine compartment. This head gasket kit includes various OE/OEM and interchange part numbers such as 12589226, 12565390, 12498544, and 12573949. It is a great addition to any car or truck parts and accessories collection. Representative item is shown. 4 pairs. 8 pieces total. New in original sealed packaging, which has light wear. Made in China. No returns on installed items or partial sets. Please review our business policies in our store for information regarding returns, shipping and warranties.