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Your cart is empty.Replacement oxygen sensor for Robinair R-1234yf machines and refrigerant identifiers. Your 1234yf machine or identifier should provide advance notice when the oxygen sensor is nearing the end of its lifespan. Oxygen sensor replacement is required to return machine to normal operation. If the oxygen sensor expires, neither the integrated identifier, nor the machine, is able to recover or add refrigerant to the internal tank.
Rob Hughes
2025-09-04 18:15:58
This product is a great fit, much better price than ordering from your local dealer, faster and shipping is free with Amazon. Plug and play. Great product
Takuro Spirit
2025-09-03 12:30:26
Quick and proper service
GC and PC
2025-08-21 16:22:51
Our Robinair 1234-4 machine suddenly stopped working with the message the O2 sensor failed. Needed one ASAP and the Robinair store in Amazon delivered. This sensor is the same as the original and it is easy to replace.
doug
2025-06-04 15:49:38
Works perfect!
Brenda
2025-04-08 14:04:04
Arrived earlier than expected and work perfectly.
KELVIN LAPHAM
2025-03-23 18:40:19
FIXED A/C MACHINE
John Baron
2025-03-04 14:25:15
very expensive used for a/c machine
MICHAEL Miller
2025-03-02 10:32:14
overpriced. I'd like to get from Amazon but to expensive. Century Tool And Equipment FEDX 2 day 325.00
Pamela Gale
2025-02-12 13:58:39
Correct part for the machine, now it’s back up and running smooth
Jason Chen
2025-01-28 10:22:24
Ordered on Aug 19th, arrived on Aug 21. Very fast. Installed the part and it works like a charm! Very impressed.
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