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Genuine OEM Goodman A3468601 pressure switch tubing with a 3/16" inner diameter, designed for the Amana/Goodman AMH80804BXBA gas furnace. This flexible silicone hose connects the inducer/collector box to the pressure switch, transmitting the negative-pressure signal that proves proper venting before the burner is allowed to fire. Cracked, brittle, or clogged tubing is a frequent cause of pressure-switch lockout faults and a furnace that won't start.
OEM vs. Generic: OEM silicone tubing is rated for the heat and condensate exposure inside the burner compartment. Generic vinyl tubing can soften, kink, or collapse under vacuum, producing intermittent no-heat calls. The small price makes OEM the obvious pick.
Install difficulty: Easy (1/5). Cut to length, slide onto the barbed fittings, and route away from hot surfaces. No tools required—typically a 5-minute job. Always inspect and replace aged tubing during any furnace service.