1234YF Refrigerant | O'Reilly Auto Parts
For many years, R-134a was the standard refrigerant for automotive air conditioning systems. More recently, HFO 1234yf refrigerant has become the new standard refrigerant. HFO 1234yf has been found to create less environmental impact, and R-134a systems can be retrofitted with some modification to accept HFO 1234yf.
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