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The Goodman B1376853 is a genuine OEM motor mount arm engineered for the APH1436H41DA heat pump and closely related Goodman/Amana condensing units. This stamped-steel bracket secures the fan or condenser motor to the unit housing, holding the motor in precise alignment so the blade or blower turns true and vibration-free. A cracked, corroded, or bent mount arm is a common cause of motor rattle, blade rub, and premature bearing wear — replacing it restores factory-spec support at a fraction of the cost of a new motor assembly.
The genuine OEM B1376853 arm is dimensioned to the exact bolt pattern and standoff height Goodman used at the factory, so the motor shaft stays centered in the housing. Universal or bent-to-fit brackets often force you to shim the motor, throwing off blade clearance and inviting noise or contact damage. For a load-bearing part that keeps your motor aligned, OEM is the safe choice.
A basic repair — disconnect power, note the motor orientation, transfer the motor to the new arm, and reinstall. Most DIYers finish in 20–30 minutes with common hand tools. Always shut off power at the disconnect before servicing.