Globe Marine Run-Dry&Acirc; Model 1114 Impeller for Jabsco 4598-0001, 18327-0001, Sierra 18-3021, Sherwood Pump 10187 Made With Run-Dry-- Guaranteed to Run-Dry for Up to 15 Minutes 2-9/16" x 2" Deep, 5/8" shaft diameter, Keyway Drive, 8 Blades. Contains impeller only - no gaskets. Fits Jabsco 4598-0001, 18327-0001, 2820-0001, 4598-0001, 4648-0001, Sierra 18-3021, Sherwood 10187, Oberdorfer 8515, Volvo Penta AQ 150 Don't get stranded out on the water - order a spare impeller today. For Water applications only. Made in the USA.