Photo 1 of Replacement Oxygen Sensor - 16916 Oxygen Sensor Compatible with Robinair R-1234yf Machines and 16990/16995 Refrigerant Identifiers - for AC1234-4 /AC1234-4SL /AC1234-4-230 /AC1234-6 /AC1234-9

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Photo 1 of Replacement Oxygen Sensor - 16916 Oxygen Sensor Compatible with Robinair R-1234yf Machines and 16990/16995 Refrigerant Identifiers - for AC1234-4 /AC1234-4SL /AC1234-4-230 /AC1234-6 /AC1234-9