

🧽 Flush your A/C system like a pro—clean, fast, and flawless!
Mastercool 91049-128-4 is a professional-grade, solvent-based flush designed to quickly and effectively remove debris and sludge from A/C systems. It evaporates fast, leaves no residue, and is safe for O-Rings, making it ideal for maintaining optimal vehicle performance. Non-flammable and non-corrosive, this 4-pack of 1-gallon containers is proudly made in the USA.

| Manufacturer | Mastercool |
| Brand | Mastercool |
| Model | 91049-128-4 |
| Item Weight | 11.29 pounds |
| Product Dimensions | 13 x 12 x 12 inches |
| Item model number | 91049-128-4 |
| Manufacturer Part Number | 91049-128-4 |
| Special Features | Residue Free |
J**.
It works
Worked very well and saved money on the gal. Size
B**D
great product, poor delivery
great product, poor delivery, this stuff is basically alcohol and acetone with some other chemicals..., delivery gave it upside down and lost 1/4 that destroyed the box and neighbors in this complex didn't appreciate it, but not this company's fault, just the inept driver...
K**S
Works Fine
I just flushed the lines and front Evap Core from a 2010 Dodge Grand Caravan. Fluid cleans well and evaporates fast. Evap Core was plugged, this flush broke through the plug very quickly. I didn't get any residual oily film like other users have reported. It did the job it's designed to do and did it well.
V**T
excellent
worked great
X**X
Works well but does leave some residue
It works but it does leave some residue. Smell is not strong. Wear gloves as it will turn your skin white. Did a good job of cleaning out the old pag oil. Prefer this to the stuff in the pressurized can because you can run this as used through a couple times to get most oil out then new clean flush through for the final pass which saves flush.
G**T
Worked great will order again
This product thoroughly cleaned the AC system I was working on, I do recommend this product
R**A
It doesn't work at all
The truth is that it is a bad purchase. I do not recommend it. The product does not dry or clean anything. I had to use break cleaner to remove the air conditioning pipes!
E**.
Great Purchase
Great Purchase
Trustpilot
1 month ago
1 month ago