This is a used, original water pump from a 1955 Cadillac. This should fit all 1955 Cadillac's, and may fit other years as well, but I'm not sure so please verify for yourself before buying. This is in used original condition. It came from a parts car that has been sitting for years. It does spin, it is not seized or anything like that. This a core unit for repair or rebuild before use again. Comes as shown, Sold As Is. Please let me know if you would like any other info. Thanks