Image is for illustration purposes only. Actual part may vary.

803804

POWER REGULATOR

The 803804 is a left-hand (driver side) electric window regulator designed for Mack heavy-duty trucks. It uses a motor and cable or linkage assembly to raise and lower the window glass in the door. You would replace it when the window fails to move, operates slowly, or makes grinding or clicking noises—restoring proper sealing and operation.