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This genuine OEM Goodman B1376853 motor mount arm is the bracket that secures the condenser fan motor within the APH1642H41BA package heat pump. The mount arm holds the motor in correct alignment over the condenser coil so the fan blade maintains proper clearance and airflow. Rust-through, cracking, or a bent arm leads to fan wobble, blade strikes, vibration noise, and eventually motor bearing failure — a low-cost part that protects far more expensive components.
Universal mount arms rarely line up with the factory bolt pattern and motor standoff spacing. This factory OEM arm is a direct-fit replacement — the holes, offset, and length match exactly, so the fan blade seats at the correct depth in the orifice without modification.
Easy (2/5). A straightforward mechanical swap: disconnect power, support the motor, transfer it to the new arm, and re-check blade clearance. No refrigerant work involved. A capable DIYer can complete it with basic hand tools.