Globe Marine Run-Dry Model 1015 Impeller Replaces Onan 131-0386 & 131-0218 Made With Run-Dry-- Guaranteed to Run-Dry for Up to 15 Minutes 2-1/4" x 3/4" Deep, 3/8" shaft diameter, Single Flat Drive, 6 Blades. Impeller only- does not include gasket. Fits Onan 131-0386 & 131-0218 Don't get stranded out on the water - order a spare impeller today. Water applications only. Made in USA