Globe Marine Run-Dry&reg; Impeller Model 620 for Jabsco 18838-0001, Johnson Pump 09-701B-1, Sherwood 9959K, Sierra 18-3046, CEF 500103, Westerbeke 11418, Pleasurecraft R061015 Made with Run-Dry-- Only Impeller in the World Guaranteed to Last Up to 15 minutes run-dry! 2 7/16" Diameter x 1-1/4" Wide, 5/8" shaft diameter, keyway drive, 12 blades Replaces Jabsco 18838-0001, Johnson Pump 09-701B-1, Sherwood 9959K, Sierra 18-3046, CEF 500103, Westerbeke 11418, Pleasurecraft R061015 Don't get stranded out on the water-- order a spare impeller too. Made in the USA. For water-use applications only. Kit contains gaskets and O-rings.