The Mercury Marine serial number 0M974280 is Drives SSM VI engine that’s part of the sterndrive model 5R15W20HH. It was produced during the years 1991, 1992, 1993, 1994, 1995, 1995M, 1996, 1996M, 1997, and 1998. The engine displacement is , and the horsepower ranges from SSM6 to SSM7. The engine belongs to the serial range and catalog [ALL & Up] – USA – Cat.# 90-853693. Related components are listed below.