This is a vintage International Harvester intake/exhaust manifold. The casting number is 398071R1 as shown. I believe this manifold fits many years and models. Please confirm your specific application. This intake/exhaust manifold is in very good original condition as shown. There are no breaks, repairs, or modifications to this part. This is simply a very nice original part that is ready to install and enjoy. This is your chance to own the factory IH intake/exhaust manifold you have been searching for at a GREAT PRICE. Don’t Miss It. Check out my other listings for more rare and hard to find parts including the Zenith carb that came off this manifold.