Mastercool89661-UV Automotive R134a 2-Way Manifold Gauge Set with Mini Dye Injector – U.S. Designed, Assembled, and Tested – Includes 60" Hoses and Manual Couplers

I needed to do some ac work and wanted a set of quality gauges and decided to give theae a try.Out of the box they seem well made and a nice storage case included. I went with this set over some of the the cheaper ones because of the manual couplers, sight glass on the manifold and the included UV dye injector.Hooking up the couplers and being able to adjust them manually will help preventing damage to the valves which is a plus. All the connections seem very solid, the gauges are easy to see and read. The hoses are nice and long amd felxable.The UV dye injector is a nice touch and better than buying specific dye cans or just pouring dye into a hose. Easy to add dye winout hooking up the full gauge setup.Overall seems like a nice gauge setup with some very useful extras that make it well worth the price.

I’ve been using this same brand for decades. It had never let me down. I use the on a harsh environment as heavy construction equipment tech in the field service department. I had never found a set of valve that supported the use, sometimes abuse we submit this tool. I only have had to replace a couple of seals from time to time due to excessive use on somewhat corroded ports.

Even though not leaks so far at the fittings but they look really cheap, was expecting better for being mastercool brand

Perfect tool to have for ac repairHas everything needed to get the job done

Manifold is exactly what I expected; however, the provided hoses do not work with the manifold without an adapter. Called Mastercool at the phone number on their website and told them my issue. They said there was a slip up with a few sets but they are sending me the correct fittings for free. Great product and even better customer service.

I have been wanting a set of gauges just for automtive uselI was just about bought a Harbor Frieght set and call it good. I'm glad I went for the upgrade! The gauges, manifold bar, and hand valves seem to be well made and reliable. It has "dummy plugs" on the side to hang the blue and red hose from when not in use but, not the yellow! all the ports on the manifold are the standard 1/2" ACME fittings. All the hoses are ACME on one end. The yellow is ACME on both ends. The red and blue hose have 1/4" male pipe thread with an O-ring. These are for attaching to the quick connect fittings that are included. The middle port on the manifold has a T with another ACME fitting with a schrader in it. You can use this to attach a vacuum gauge or purge non-condensable from the hoses before charging. All-in-all a great, complete kit!

High side connector was missing from the case

This is a really nice AC gauge set. If your like me and stuck in the forbidden territory (aka California) for car guys you need the can punch (green pliers looking thing) to fill to AC. The stupid California R134a can adapters suck and always leak.

Great set for the price. I do dozens of vehicles per week and this set held up fairly decently. I did end up upgrading to yellow jacket Titan but more so for the dedicated vacuum line.The perfect set for someone who may only do a few vehicles per week!