Certified A/C Pro Car Air Conditioner Adapter Valve, Retrofit Valve Adaptor Converts Refrigerant from R-12 to R-134A, Includes Dust Cap and Retrofit Label, InterDynamics

Works as described.But if you are retrofitting your car from R12 to 134a, you might want to consider getting a full retrofitting kit.You get 3 cans of 134a, both low and high side adapters, and the hose/gauge to run the can into your car.The full set I got was only about double the cost of this one fitting.I bought this fitting to work with the pierce valve I got to allow us to charge our freezer that uses 134a, but had no fill port on the line.Now I can charge it using automotive style 134a refill cans.

I followed a you-tube video and used this in addition to a couple of other parts to fix a dumpster fridge my kid found on the side of the road. Everything was purchased on Amazon. Fixed a $150 fridge for about $20.

Works good

Worked as described. No leaks and allowed me to recharge hot water heater heat pump.

Worked as it was supposed to. Connected to Supco BPV31 bullet piercing valve to add refrigerant to refrigerator that was not cooling properly. Using a small can from auto store and trigger system to recharge the AC unit which is working great again. Wish the price was lower but it did work.

Fits perfectly. Finally converted over to R134a system and Hi and Lo ports are now easier to use with my gauge set.

Didn't work as expected

This screws onto the lowside port of an r12 system..giving you a r134a end. Fitted perfected on a Mazda b2600, no leaks and looks well built. It also came with a sticker to place in the engine bay to identify the retrofit. Five stars in my opinion