The Mercury Marine serial number 9B604673 is MotorGuide Thruster Series part of themodel 9T34B3AY6. It was produced during the years 2004 and 2005. The engine displacement is , and the horsepower is 12V. The engine belongs to the serial range and catalog [9B017600 & Up] – Cat.# 90-896321. Related components are listed below.