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The Goodman B1392139 View Port Bushing is the genuine OEM grommet that seals and frames the inspection sight port on your ACVC961205DNBA 96% AFUE two-stage gas furnace. This small but essential fitting keeps the burner-observation window airtight, preventing combustion-air leaks while letting a technician confirm proper ignition.
This is a genuine OEM Goodman bushing machined to the exact bore and durometer of the factory part, so it seats flush and maintains the combustion-chamber seal. Generic substitutes often run undersized or use lower-temperature rubber that hardens and cracks, breaking the seal and triggering nuisance lockouts.
Easy (1/5). Press-fit replacement — minimal tools. A typical swap takes under five minutes. Always shut off gas and power before servicing.