This listing is for one NTK oxygen sensor for various Chevrolet, Cadillac and GMC models. Please see the compatibility list for fitment info to be sure this is the correct O2 sensor for your vehicle NTK Part number: 12657188 12643903 12655678 12661898 12683553 2344974 12655678 2348088 234-4974 234-8088 This is a new part, but since I received them in a master case it does not include individual retail packaging 12643708, 12645561, 12655677, 12655678, 12657188, 12659516, 1266 NTK Downstream Oxygen Sensor Chevy Silverado 1500 GMC Sierra 1500 4.3L 5.3L 6.2L Click images to enlarge Description This listing is for one NTK oxygen sensor for various Chevrolet, Cadillac and GMC models. Please see the compatibility list for fitment info to be sure this is the correct O2 sensor for your vehicle NTK Part number: 12657188 12643903 12655678 12661898 12683553 2344974 12655678 2348088 234-4974 234-8088 This is a new part, but since I received them in a master case it does not include individual retail packaging Payment Paypal is our accepted payment method Please be sure that the shipping address on your PayPal and account is correct and confirmed. If you want an item shipped to an address other than your confirmed PayPal address, please send me a message with your request. Shipping INTERNATIONAL ITEMS THAT ARE LESS THAN 4 POUNDS (ABOUT 2 KILOS) ARE SHIPPED FIRST CLASS INTERNATIONAL AIR MAIL. USPS DOESN'T PROVIDE TRACKING NUMBERS FOR THAT SERVICE. YOU MUST ALLOW UP TO 21 BUSINESS DAYS TO RECEIVE YOUR ITEM/S. MOST COUNTRIES GET PACKAGES DELIVERD FASTER THAN THAT. WE DO SHIP EVERY DAY, AND WE OFTEN SHIP ON SATURDAYS ALSO. We are not responsible for any customs or duty fees. Terms of Sale Please be sure to take a close look at the pictures, title, and description of items before placing a bid. We assume that any product requiring installation is installed at a professional shop as we only sell these products. We don't install them. However, I will do my best to answer all of your questions the best I can. Some of our items include installation instructions and some do not. We don't make our products. If we receive the product with instructions, it will be shown on the pictures. There is no way for use to check if the item/s will fit your car if you are from outside of the U.S.A. All items we sell are to U.S.A specifications. Pictures sell! Auctiva offers Free Image Hosting and Editing. 300+ Listing Templates! Auctiva gets you noticed! The complete Selling Solution. Track Page Views With Auctiva's Counter