25168440
Door Arm Check Retainer
Mack

This door arm check retainer is a vital component for controlling the movement and positioning of truck doors. It ensures smooth operation by providing controlled resistance during opening and closing, preventing sudden or uncontrolled movements. Its robust design withstands repeated use and harsh conditions, maintaining functionality over time. Proper retention of the door arm check contributes to vehicle safety and helps prevent damage to door components. Regular inspection and replacement of this retainer are recommended to preserve door operation quality. Source One Parts Center offers this part to support technicians in maintaining reliable door mechanisms on heavy-duty trucks.