This listing is for a new water pump for 1957-58 Chrysler Imperial, New Yorker, 300 models using the 392ci HEMI V8 engine and 1957-58 Chrysler Windsor and Saratoga models using 354ci POLY V8 engine. P/N WP519. This is a brand new, ready to install water pump that has been leak tested and features improved sealing over the original water pump. This water pump comes complete with mounting gaskets, and all water pumps go through our stringent quality control process.Packard Industries