The Mercury Marine serial number 0R745488 is 4 Stroke 4 (4-STROKE) engine that’s part of the outboard model 1F05211KL. It was produced in 2006. The engine displacement s are either 7.5 or 12.8, and the horsepower ranges from 4, 5, 6, to 9.9. The engine belongs to the serial range and catalog [0R411838 & Up] – USA – Cat.# 90-8M0056559. Related components are listed below.