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The Goodman B1376857 is a genuine OEM motor mount arm (bracket) for the GPC1360H21A packaged air conditioner. This formed steel arm supports the condenser fan motor and positions it concentrically over the fan opening so the blade spins true. A bent, rusted, or cracked mount arm allows the motor to sag or vibrate, causing blade strike, noise, and accelerated bearing wear.
The genuine Goodman OEM arm is stamped to the exact length and bend angle required to center the motor over the shroud. Generic or fabricated brackets rarely match the hole spacing and offset, leading to misalignment and blade interference. At this price, OEM is the obvious choice.
Easy. Disconnect power, support the motor, unbolt the old arm, install the new arm, and re-center the motor before tightening. Typical time: 20–30 minutes. Verify blade clearance on all sides before restoring power.