Globe Marine Run-Dry Impeller Model 321 for Jabsco 14787-0001, 14792-0001, CEF 500113, Yanmar 128176-42071 and Ancor J050013 Made With Run-Dry-- Only Impeller in the World Guaranteed to Run-Dry for Up to 15 Minutes 1-1/4"x 15/32" Deep, 5/16" shaft diameter, Single Flat Drive, 6 Blades Replaces Jabsco 14787-0001, 14792-0001, CEF 500113, Yanmar 128176-42071 and Ancor J050013 Don't get stranded out on the water -- order a spare impeller too. For use with water applications only. Order RED impeller for Diesel. Impeller only- no gaskets or O-rings.