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The Goodman B1376853 motor mount arm is the bracket that supports and positions the fan motor inside your WPC4424AHAB package unit. This arm holds the motor at the correct height and angle so the fan blade spins true within the grille. A bent, cracked, or rusted mount arm lets the motor sag or vibrate, causing noise, blade contact, and accelerated bearing wear. The genuine OEM arm restores secure, vibration-free mounting.
The OEM mount arm matches the exact length, bend, and bolt pattern needed to hold the motor in factory position. Substitute brackets rarely line up, forcing custom drilling that can misalign the fan and stress the motor. The genuine Goodman arm bolts in correctly the first time.
Easy to moderate. Disconnect power, support the motor, unbolt the old arm, and install the new one with the motor at the correct height. Plan 20–40 minutes. Confirm fan-blade clearance before restoring power. Suitable for an experienced DIYer; a technician is recommended if the full motor assembly must come out.