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The B1392143 is a genuine Goodman/Amana rubber motor-mount grommet used on the fan motor assembly of the APH1342M41CA packaged heat pump. This small isolator cushions the motor against its mounting bracket, absorbing vibration and dramatically reducing operating noise. Over years of thermal cycling and UV exposure the rubber hardens, cracks, and crumbles — leading to a rattling, buzzing outdoor unit and, if left unaddressed, premature motor bearing wear from transmitted vibration.
Genuine OEM grommets match the exact inner/outer diameter and durometer of the factory part, so the motor seats securely without slop. Undersized or over-soft generic grommets allow the motor to shift, throwing the fan blade out of balance. At this price point, OEM is the obvious pick.
Easy — DIY friendly. With power disconnected, the grommet slips into the motor bracket by hand or with light pressure from a flat screwdriver. No tools beyond basic hand tools and no refrigerant work required. A 10-minute repair for most owners.