The product is a new OEM GM engine valve cover specifically designed for the left side of Chevy, Buick, Olds, and Pontiac vehicles with a 3.8L engine size made between 1990 and 2009. The valve cover comes in a black color and is a direct replacement part, ensuring a proper fitment for the specified models. The manufacturer part number 12590366 is engraved on the valve cover, making it easy to identify and install the correct component for your vehicle's engine valvetrain system.