(1) AC DELCO 41-993 IRIDIUM SPARK PLUGS  (19256067) This original equipment General Motors filter arrives as pictured This filter is OEM quality and has been Manufactured for AcDelco for an exact fit on your GM vehicle. *Please contact your local GM dealership and provide them with the last 8 of your vin to confirm fitment* We ship all items within 1 business day of purchase using the United States Postal Service (USPS) for free via First class mail.