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The Goodman B1376853 Motor Mount Arm is a genuine OEM blower bracket for the ASPF313716DA air handler and compatible Goodman/Amana models. The mount arm cradles the blower motor inside the housing, holding it in precise alignment with the blower wheel so the assembly runs true, quiet, and vibration-free. A bent, corroded, or cracked mount arm is a common cause of noise, wheel rub, and premature motor-bearing wear.
This is a structural part — exact geometry matters. The OEM arm reproduces the factory bolt pattern and offset, so the motor sits at the correct depth and the wheel clears the housing. Generic substitutes often differ slightly in length or hole spacing, forcing you to shim the motor or accept misalignment. Choose OEM to protect the motor and blower wheel.
Moderate (3/5). Disconnect power and pull the blower assembly. Transfer the motor to the new arm using the original hardware, verify wheel clearance, and reinstall. Plan 30–45 minutes; best handled by a qualified technician.