R1234YF Adapter, R1234YF to R134A Quick Coupler, 1234yf to 134a Quick Coupler, High Low Side Connector Conversion Kit AC Charging for R1234yf Refrigerant Air Conditioning System Hose Fitting

Fit perfectly on my gauges and no leak issues.

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Would not buy. The low side fitment does not work. Will not connect and should have being an engineered fitting. These fittings for connectivity should have been tested prior to shipping and shows no quality control. Lost my ability for a refund because I waited too long before I tried to use them for the first time. Junk

These adapters allow you to use existing manifold gauges for R134a on a system using r1234yf. R134a is an older refrigerant and found in many cars over the last two decade, so my current gauge set uses connectors for that refrigerant. Now, family members have some newer cars requiring r1234yf. Of course the quick connectors are not interchangeable. But with this kit, these connect to the r1234yf systm and you can use use your "old" hoses and gauges. Attach the adapters first to your gauges (male end), and then the adapters to the refrigerant line (female end). These are robust and well made, and a good value over having to puchase another complete gauge set.

My hubby love it.