1OE Number: The referencing OE number of this water pump impeller are 15000, She 15000K, 15000k Shw, 18327?0001. 2Fitment: The boat marine impeller is a replacement for Sherwood 15000K , replacement for Jabsco 18327?0001, replacement for Cummins 3349198 , 3916720, replacement for Mercruiser 47?453126. 3Function: Used to replace or refurbished the worn out impellers, it could provide higher flow and cooling flows, thus better protecting the engine. 4Material: Made of marine grade high strength rubber and metal material, it is reliable, efficient and high performance, designed for long term use. 5Ideal Replacement: Direct replacement installation, meets or exceeds Oem standards for the replacement of old and damaged one on original vehicles.