Mastercool 82375 Oil and Dye Injector for R134a
Product ID: 3560127
🔧Precision needle valve control
🧊R134a system compatibility with 1/2” ACME fittings
⚙️2 oz heavy-duty metal canister
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🛠️ Inject with precision, service with confidence — never miss a leak again!
The Mastercool 82375 Oil and Dye Injector is a professional-grade tool engineered for precise injection of refrigerant oil or UV dye into R134a automotive A/C systems. Featuring a durable 2 oz metal canister, dual injection methods (vacuum suction or pressurized refrigerant), and precision needle valve control, it seamlessly integrates with standard 1/2” ACME fittings. Trusted by technicians and DIY enthusiasts alike, this injector delivers reliable, controlled performance to detect leaks and maintain optimal A/C system health.
| ASIN | B000IKADRW |
| Best Sellers Rank | #103,134 in Automotive ( See Top 100 in Automotive ) #559 in Air Conditioning Line Repair Tools |
| Brand | Mastercool |
| Customer Reviews | 4.6 4.6 out of 5 stars (373) |
| Date First Available | October 2, 2001 |
| Exterior | Silver |
| Is Discontinued By Manufacturer | No |
| Item Weight | 8 ounces |
| Item model number | 82375 |
| Manufacturer | Mastercool |
| Manufacturer Part Number | 82375 |
| Model | R134a 2 oz Oil/Dye Injector |
| OEM Part Number | 82375 |
| Product Dimensions | 4.3 x 2.3 x 11.3 inches |
S**L
Terrific Tool that is easy to use.
Very good tool to own if you're DIY'ing your A/C work. Great way to add dye to the system to chase leaks with.
4**N
Great professional tool
This is a very high quality tool for use by professionals. Very easy to use. Those that complain about the wrong fittings simply bought the wrong one. This one is for R134a, Mastercool also offers one for use with R12 systems. The fittings are different. You do have to inspect and clean out the barrel prior to first use. This injector may be used before charging a system or with a fully charged system. I own all of the Mastercool line of A/C service tools. They are the highest quality and the highest value. Don't trash this fine tool because you are not a professional and don't know how to use it.
A**M
Great Mastercool quality as usual
Been a pro for years, using Mastercool products. This oil injector does exactly what it's supposed to do, and is high quality. If you're too clumsy to thread a big lid onto a cannister without crossing it up, AND if you don't know what size fittings you need, you probably should leave this stuff to the big boys and stay out from under your hoods. Oafs and clowns.
N**L
Works great.
I used this to add oil back into my Ranger's AC system. I wasn't sure if I was doing it properly as per their instructions and I had to pull a vacuum a couple times to get all 2oz of oil into the system but other than that it worked fine. Very solid piece. MAKE SURE YOU CLEAN THIS BEFORE USING!!! Can't stress that enough. I ran some brake clean through it and emptied the contents on a towel. I saw MANY metal shavings of aluminum and casting oil (black stuff). I am glad I read a review stating to clean it first or I would have just used it and gotten that crap into my system. I'm putting it in my review as well to hopefully help someone as well. I had no issues getting the cap on or off. Threads were clean and all fittings/orings were sound.
E**D
Good tool
If you have a vacuum pump this tool is useless
W**E
Easy way to add product to AC system
Very good quality. The valve works and is also of high quality. The body is machined, the threads are clean. I had no trouble using this item on several auto AC systems this summer. I would recommend it to anyone who needs a way to get oil into their AC system. On one car when I didn't have my gauges with me I just used a can of 134a to push the oil into the system. Worked perfectly that way.
A**R
Amazing tool
Used professionally for 2 years now. If there is pressure in it it will not unscrew, if you force it it will strip the threads... Duh. So make sure it doesn't have pressure in it and you won't have problems like others did
W**Z
a/c oiler
I sended it back because ,it didnot fit the new guages
M**E
Exactly what it is
Exactly what I needed to add to my home ac repair business now I am able to add oil into system with out having to fill the filler hose with oil a lot faster I just had to get adapters to be able to hook up tommy guages
M**N
Satisfait
A++A++A++
W**M
good
perfect
M**T
Garbage
Used it once then could not get the cap to open. Found the threads galled up after first use. The cap was simple hand tightened and was not cross threaded as can be seen, as the threads are perfectly fine after the first couple of threads.
T**N
Five Stars
Worked very well and was the cheapest option at the time. Mastercool sell quality products.
Trustpilot
2 weeks ago
2 months ago