Product Overview
The World American WA911-20-8860 HVAC Control Unit is designed to operate the heating, ventilation, and air conditioning functions on Peterbilt 387 and 587 trucks. This control unit manages airflow, temperature, and system modes and is commonly used as a direct aftermarket replacement for PACCAR OEM part number Q21-6008. Built for reliable daily operation, it restores proper HVAC control and cab comfort.
