The Freeze Plug 0650664 by A & I Products is specifically designed to protect engine blocks from freeze damage. With a diameter of .891 inches, this plug is made from high-quality materials for durability and reliability. It fits a range of engine models, ensuring a secure seal. Meeting industry standards, this freeze plug is essential for maintaining engine integrity in cold weather.The Freeze Plug (0.891 inch diameter) model 0650664 from A & I PRODUCTS is a metal core plug designed to protect engine blocks from freeze damage. Made from corrosion-resistant steel, it fits precisely into engine block openings with a diameter of 0.891 inches. The plug seals coolant passages to prevent leaks and withstands engine operating temperatures and pressures. Suitable for replacement in agricultural and industrial engines requiring freeze protection. Manufactured by A & I PRODUCTS, model 0650664.