●This water pump base replaces OE#: 46-57234A1 and fits Mercruiser MC-1 and R style sterndrives from 1972-1982.
Description
This water pump base replaces OE#: 46-57234A1 and fits Mercruiser MC-1 and R style drives from 1972-1982. This will only fit models that have a preload pin on the driveshaft.