Mastercool 98234 Socket

A very useful tool to remove and install car a/c high side. It fits older Dodge Caravan or Plymouth Voyager as well.

Made right fits right great tool

The socket works great.

This socket fits the GM high side air conditioning valve. It makes installation very simple.

Must have to replace high pressure port for my truck A/C.

This review may be rather lengthy, but covers several issues others may encounter. I needed to replace the high-pressure port on my GF’s 1996 corvette show car. The corvettes high pressure port has that one-time use GM black rubber ball check valve style. Stupid design! Since the corvettes AC system was completely empty and verified by my manifold gauge set, I pulled a vacuum on it prior to recharging. It held the vacuum at 29.92” Hg for an hour. I charged the system with exactly 2 lb.’s of R134a that it required only to discover the high-pressure port was hissing and never stopped even after quickly blipping the black rubber check ball in the valve a couple of times. There went $40 of refrigerant. I purchased this socket and the high-pressure port set. One of the high-pressure ports (Dorman 800-955) has the Schrader valve stem but the other one was the genuine GM black rubber ball type…. ugh. Using a 16mm wrench as a back-up wrench so as not to twist the aluminum high-pressure pipe and kinking it, this socket removed the port very easily. If I ever encounter issues with the AC on my 2008 Envoy Denali which also has the GM black rubber ball style high-pressure port, I’ll be able to tackle the job. And just so that you don’t waste money on refrigerant, replace the GM rubber ball port with a real Schrader valve port prior to recharging the AC. Unfortunately, a manifold gauge set doesn’t let you know the valves could be leaking because the gauge set is sealing both ports during the leak test. I suppose I could have removed ONLY the high-pressure port manifold coupler of my gauge set, and the low-pressure gauge would have shown a loss in vacuum.

I have a 2000 astro van. AC good for 4 months ,then compressor stops turning on. Add 2 cans r134a- good for 4 months. Start 4 month cycle again.Decided it was time to find leak. Soapy water confirmed leak on outside of high side port. Thought the port was cracked, ordered new port. Hemmed and hawed about this socket, but bought it. Upon receiving valve and socket i realized the existing port (service valve) was not cracked and the leak (bubbles) were coming from the o-ring on port. Used the socket to slightly tighten the the high side port , Like 5 o'clock to 6 o'clock. Leak is gone. No bubbles. Took much less time than writing this review. Was too easy. Can't help but laugh.

good a/c fitting tool to have snug fit and pretty sturdy, feel strong enough to last and fits 3/8 dr. SWEAT BE GONE !