Feature: 1. OE Number: The referencing OE number of this engine circulating water pump are 17437, 60658, 8503991, 811841, 850399, 985429, 980477, 382218, 3853850, 383953, 856364‑5, 3853850, 835390‑6, more→8563645, 8353106, RA057018. 2. Fitment: The engine circulation pump is a replacement for Mercruiser, for Crusader, for Indmar, for Marine Power, applicable for 4.3L V6 and 5.0,L 5.7L V8 engines with either steel or plastic timing covers. 3. Bi Directional Impeller: These circulating pumps have a brass bi directional impeller, which means they can be used on engines of either rotation direction. 4. Perfect Replacement: Ideal for refurbishment replacement of the original ageing and damaged circulation wate…