This listing is for a set of six ignition coils and spark plugs compatible with Buick LaCrosse and Cadillac ATS. The coils are of the Coil on Plug (COP) type and do not require an external resistor. The manufacturer part number is BD-05-01794-CK and the superseded part numbers are 3340078J01, 3340078J02, 5C1612, and 12632479. The item is matte finished and was made in China. Please note that the condition of the item is not mentioned in this description. This is a great opportunity to buy an ignition coil and spark plug set without worrying about the condition or quality. Exact item set is shown. New open box item without original packaging. Includes 6 ignition coils and 6 spark plugs. 2 of the spark plugs have been test fit but never fired. Made in China. No returns on partial sets. This item is a new, opened customer return. It has been inspected and passed quality control to insure the condition described and contents are accurate. Please review actual photos as stock photos are not the actual item, our photos are. You will ONLY receive exactly what is shown in photos, regardless of what might have originally been included. Please review our business policies in our store for information regarding returns, shipping and warranties.