OMT Coolant Pressure Tester Kit, 33pc Master Vacuum Refill Kit, 23 Adapters | Vacuum Purge Refill Tool; Probe Thermometer; Wrench; Leak Detection; Aluminum Alloy; Fits BMW, Ford, VW, Porsche, Mercedes

This dual-purpose OMT kit for both Pressure Test AND Vacuum Test+Fill offers incredible value, with custom-fit adapters for nearly every radiator and cap type—nearly matching AutoZone's $370 single-purpose rental kit which only performs Pressure Tests. After using it for 6 months on multiple cars of different brands (and connection types) from USA to Japan and Korea, I’m extremely satisfied. The kit helped me quickly identify a large radiator leak by producing a visible spray of coolant as a result of pump pressure on the closed cooling system, something I couldn't achieve just by idling the engine. (Important note: Don’t over-pressurize beyond your radiator cap’s rating to avoid creating new leaks.) The included hand pump is great for pressure testing radiators and caps, reaching up to 40 psi (2.5 bar) on its high-quality gauge. That's higher than the pressure rating of any radiator cap I've ever yet seen, so it covers the maximum possible pressure I'll ever test to. In addition to immediately detecting obvious large leaks, the pressure gauge can be used for sustained "hold tests" to find small leaks that may only drip over time. If necessary, you can use UV dye in the coolant, then apply pressure to reveal even the smallest leaks with help from a UV Light at night. I’ve found that combation of Pressure Pump PLUS UV helpful for diagnosing slow leaks that may cause coolant loss over months, tool, but still eventually risking overheating and blown head gasket if not found and repaired. A standout feature of this OMT kit is its included vacuum test and fill tool, which is usually an extra cost for a separate kit from other brands. This tool uses induced vacuum from an air compressor to remove all air gaps during coolant refills, preventing problems like cylinder head cracks or heater failure which may occur after any less perfect fill with air gaps. OMT includes this vacuum tool with the pressure tester at the cost of just this one combo kit. That's unlike competitors such as Harbor Freight, which charges $95 for a single-purpose pressure test kit, then an additional $88 for their completely separate tool for vacuum test and fill. The vacuum tool in this OMT kit is also well-designed, working effectively with all 22 of the kit's shared custom-fit snap-on radiator adapters which also snap onto the pressure test tool to assure a secure seal. It created a solid vacuum of 25 inches (0.85 bar) for me today when blowing my 90 psi compressed air through its vacuum ejector. Then I only had to close a quarter-turn ball valve to lock in that strong induced vacuum and confirm no leaks anywhere in my car’s entire coolant loop after that vacuum held throughout a 10-minute test. Finally, by opening one ball valve to its coolant intake [after previously draining old coolant and then vacuum hold testing as I'd just finished in the close-up photo], I was extremely pleased to [finally; after 40 adult years of growing expertise as home mechanic to family & friends] refill exactly like the best-equipped pro repair shops [see wider photo, just as I finished my setup to fill from its induced deep vacuum [in my pre-drained empty Cooling System] to Zero Remaining Vacuum [which then means 100% filled with no air bubbles; equalized with the atmospheric pressure which is pushing down outside - on the remaining new coolant in my siphon bucket]. This Vacuum Test+Fill tool has just added a professional level tool to my home garage - saving time and more importantly, perhaps saving engines from overheating failures due to coolant leaks I wouldn't have found without it. Overall, this OMT kit offers the most quality and value I could find for under $100 (as I write this, in Spring 2025). It has brought me professional-level capabilities for testing and repairing cooling systems on a variety of cars—eliminating many times its cost in shop labor for cars of family and friends while ensuring reliable, leak-free repairs.

Works exactly as it needs to! Here are a few details on this kit. 1. DO NOT LISTEN TO THE OTHER REVIEWERS COMPLAINING ABOUT THE QAULITY. About half of the tool is a stiff plastic material with several brass and metal fittings mounted to these plastic parts. could the plastic components be metal instead? yes but as long as your not cranking down or tightening fittings and stuff too hard then it works perfect and it DOES NOT CRACK. 2. I needed this tool for my motorcycle as most modern sport bikes require a vacuum bleed procedure instead of a traditional coolant bleed process. worked great and the fittings i needed worked exactly as i needed. HIGHLY RECOMMEND FOR MOTORCYCLE APPLICATIONS. 3. the instruction manual was easy to understand as long as you are mechanically enclined and have common sense as to how pneumatic tools work. very easy to understand. overall, while i wish the plastic components were metal. a simple visit to home depot or a hardware shop to replace these plastic parts with metal could work if you desire. tool worked exactly as i needed it and just overall. a good kit for 70 bucks. would not pay more for this exact kit though. sub 100 dollars fine but anything more, absolutely not. Motorcycle being referenced: 2022 yamaha r1

This thing is awesome, rivals my coworker’s strap on pump and stant pumps. The vacuum bleeder is also a clone of the big S and works just as well. No leaks with either, andDon’t waste your time with other brands, just go OMT. As a factory certified tech I can vouch that this has been dead reliable for over two months with daily use. Awesome value for the accessories too giving extreme compatibility! If I’d had one gripe it’s that the case is huge but I’ll get over that for the ease of use and number of adapters.

The kit worked great for my 2016 Ford F250 Diesel. Used the orange cap for my main reservoir and the middle sized cap for the secondary reservoir and was able to pull a vacuum on both sides and it worked great. Only issue is the air connectors provided don’t work, even though they claim one as “American style”. I had to use one of my own 1/4 I/M plugs that worked with my coupler for my air tank.

Vacuum fill set up doesn't get all the air out. I used it, and after a few minutes of letting it sit after, the coolant level dropped significantly. The pressure tester leaks a bit over time as well.

I bought this tool to test liner o rings on a John Deere tractor. Product works great and is easy to use. Plenty of adapters to fit a wide variety of vehicles and equipment. Definitely worth the money spent and would not hesitate on purchasing again. Held pressure without leaking down, 10/10 would buy again.

i was blown away when i opened the package and saw all the items in it! i’ve had a lot of problems trying to change antifreeze with it air locking! this will make sure it never happens again

Has the correct adaptor for my 2018 Ram 2500. Pressure tester worked great. No leaks found. Tried the vacuum coolant filler today. Won’t get to 20inHg and in the process the air hose nipple pulled out of the plastic. I was able to push it back in, but it won’t tighten down. Bad design to have plastic connectors when the rest of it is metal. Will be retuning this.

Tut was es soll, adapter passen.

Nikel

Doesn't work on vauxhall

Surprisingly good quality. Quickly helped me identify leak path for a small leak which only occurred at high pressure (couldn't find with engine running at idle) on a complex supercharged engine. Wish I'd had this kit earlier!

Really great tool, well made, fittings great quality and tough, use this tool at work as well at home, important correct fittings used on the expansion tanks, can be tightened with the small spanner supplied, overall great value for money.