New impeller used by Volvo Penta, OMC, Johnson F5B pumps, Onan, Perkin, Yanmar, Jabsco and others Width 1-1/4" (31.5mm) . Diameter 2-1/4" (57mm) . 5/8 shaft 12 spline Includes O-rings and gaskets to fit mulitple applications. Recommended to replace annually. Install with dish soap. If purchasing for Volvo Penta or OMC it only fits pumps with short screws prior to 2005. Please see picture. Replaces: Volvo-Penta 825940, 860203, 3855546, 3858256, 3862281, 21213660, 876243, 3862567, 3856039 , 877400, 3862567 , 875811-2, 3856029, 21951346. Johnson 09-1027B, 09-1027B-1. Sierra 18-3081. Yanmar 129470-42530. GLM 89540 New Impeller kit used on OMC and Volvo Penta crank mounted water pumps. Includes gaskets and O-rings. Interchanges with 21951346, 21213660, 3862281. Jabsco 1210-0001P, Johnson 09-1027B-1, Sierra 18-3277,18--3081. Used on Volvo Penta up to 2005. Used on all Johnson F5B crank mounted pumps. Use liquid soap to install.