Review on GooMeng R1234YF Car AC Refrigerant Charge Hose Kit: Complete Auto 1/2 Acme LH R1234YF Air Conditioning Refrigerant Charging Hose with Gauge by Ricky Bedell

Worked great. It took me 15 minutes to figure out why I can't wrap it on a can of refrigerant. This is a left-hand thread. The manufacturer has made every effort to eliminate the use of R134A refrigerant on vehicles using R1234yf. Remember - the cost of this new refrigerant is high - from $30 to $45 a can. I have the best deal in NAPA. The new refrigerant bottles are also self-sealing, requiring you to hold down the needle to allow the refrigerant to flow. Established this by noticing there was still refrigerant in the can after a few minutes. There were no instructions on the filling hose. I don't usually read instructions so I won't judge them. However, in this case, it can help in troubleshooting.