The Mercury Marine serial number 0M088550 is part of the engines – gas model 4M11025N1. It was produced in 1998. The engine displacement s are either 305 or 350, and the horsepower ranges from 5.0L to 5.7L. The engine belongs to the serial range and catalog 1998-2001 [0L015751 THRU 0M599999] – Cat.# 90-81659698. Related components are listed below.