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This genuine OEM B1376857 motor mount arm is the bracket that supports the condenser fan motor inside the Goodman/Amana APH1549M41AD heat pump. Multiple arms bolt to the top grille or fan orifice and cradle the motor over the coil, holding it centered so the fan blade clears the shroud. Over years of vibration and outdoor weather, mount arms can crack, rust, or fatigue — causing a noisy, wobbling fan or a motor that sags into the blade. Replacing a worn arm restores quiet, balanced operation.
The OEM B1376857 matches the factory hole pattern and arm length exactly, so the motor sits at the correct height with proper blade clearance. Universal brackets require bending, drilling, and guesswork on positioning. At this price point, the genuine part is the easy choice for a guaranteed fit.
Easy (1/5). A basic hand-tool job — remove the fan-grille assembly, unbolt the old arm, and bolt the new one in the same holes. Disconnect power first. Most DIYers with the top grille off can swap an arm in a few minutes.