The couplers that connect to R134A fittings won't work on an R1234yf system, the hoses and gauges will work. You need the couplers I linked to and know the pressures for the ambient temperatures you are working in, which IIRC are very close to R134a. Or properly evacuate the system and charge it the correct way.Thanks guys! S o maybe the hi lo side r134a couplers fit, i just need the can tap to connect to my gauge set.
You will need these FITTINGS to connect to the R1234yf high and low sides of the system. While they look the same as R134a couplers the business end that makes the actual connection is different than R134a connectors. HTH