Up for sale are 10 Autolite 16 spark plugs with 14mm seat size, suitable for gasoline engines with a 12V voltage requirement. These vintage spark plugs are made of copper material, and have been interchangeably used with AF42C, RBL17Y, AF52C, 00910015018, 45TS, RBL16Y, AF52, AF42, 3874934, 4339413, and 5613246. This set of spark plugs is perfect for those looking to replace their worn-out plugs with a reliable and high-performing option. With a standard configuration and made in the United States, these spark plugs are a great choice for any car or truck ignition system. Exact item lot is shown. New old stock spark plug set with original packaging. Items have very light surface rust, which will not affect performance. Made in USA. No returns on installed items or partial lots. Please review our business policies in our store for information regarding returns, shipping and warranties.