This heater fitting is ideal for those that like perfection in their car. Made by Four Seasons, it is the perfect product for anyone who believes in durability and quality. The heater fitting has a few features that make it stand out from the rest. It has interchangeable part numbers 90484, 19193799, E809218, CWK803240, 6601700, H4894, 570343, 84738, 1531757, 200061, 88918439, 931336, 56356, 2352876, 803240, and 11184738. It is made in China and comes with a 1-year manufacturer's warranty. Please note that this product contains a chemical that is known to the State of California to cause cancer.