Specs - Impeller ID: 21.31mm. Impeller OD: 89mm. Impeller Width: 19mm. Refer to images 2 & 3 for more information. Open Box - Water Pump Impeller Kit for Johnson 60 HP J60ECTB, J60ELCTB, J60TLCTB. There are variations of this kit containing different part numbers based on the year, model & style of water pump.