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The Goodman B1376857 Fan Motor Mount Arm is a genuine OEM structural bracket for the Amana/Goodman APH1536M41AB package heat pump. This stamped-steel arm supports the condenser fan motor beneath the top grille, holding it concentric to the fan orifice so the blade spins true. A cracked, bent, or corroded mount arm causes fan wobble, bearing noise, and premature motor failure — making this an inexpensive but critical part.
OEM vs. Generic: The OEM B1376857 sets the exact motor height and centering the fan orifice was designed for. A generic or fabricated bracket that shifts the motor even slightly can throw off blade clearance, cause vibration, and reduce airflow.
Installation difficulty: Easy (2/5). Disconnect power and remove the top grille, unbolt the fan motor from the old arm, transfer it to the new mount arm at the same orientation, and reassemble. A 20–30 minute mechanical job requiring only hand tools — no refrigerant or advanced electrical work.