What is the salary range of a Master Diesel Mechanic?
As of August 01, 2025, the average annual salary for a Master Diesel Mechanic in Rockford, IL ranges from $49,987 (25th percentile) to $60,563 (75th percentile), with a median annual salary of $53,696 and an hourly rate of $26. A Master Diesel Mechanic's salary is shaped by several key factors, including experience level, specific skills, industry differences, company size, and more. Below, we'll explore how each of these influences compensation.