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๐ Inject with Confidence!
The Mastercool 53123-YF Refillable R1234yf Oil/Dye Injector is a robust and efficient tool designed for professionals. Made from heavy-duty anodized aluminum, it features precise dye scales and a user-friendly twist handle. This injector meets stringent industry standards, ensuring reliability and performance in every application.







| ASIN | B01N48UCFJ |
| Best Sellers Rank | #563,015 in Automotive ( See Top 100 in Automotive ) #99 in Air Conditioning Leak Detection Tools |
| Brand | Mastercool |
| Brand Name | Mastercool |
| Connector Type | R1234yf Coupler |
| Customer Reviews | 4.4 out of 5 stars 19 Reviews |
| Exterior Finish | Heavy duty, anodized aluminum |
| Global Trade Identification Number | 00700376115741 |
| Included Components | Heavy duty, anodized aluminum, 2 oz container with dye scales represented in 1/10 ounce, 1/4 ounce and milliliters, Nylon barrier blue hose meets J2888, EPA, SAE and UL standards, R1234yf low side coupler with extended disconnect sleeve and meets SAEJ639 and J2888 |
| Inlet Connection Size | 0.25 inches |
| Inlet Connection Type | SAE |
| Item Dimensions | 12 x 2 x 6 inches |
| Item Type Name | Refillable R1234yf Oil/Dye Injector |
| Item Weight | 16 ounces |
| Item dimensions L x W x H | 12 x 2 x 6 inches |
| Manufacturer | MASTERCOOL |
| Manufacturer Part Number | 53123-YF |
| Manufacturer Warranty Description | 1 Year Manufacturer, 1 Year Manufacturer parts and labor |
| Material | Heavy duty, anodized aluminum |
| Material Type | Heavy duty, anodized aluminum |
| Model Number | 53123-YF |
| Number of Items | 1 |
| Number of Pieces | 1 |
| Number of Ports | 1 |
| Outlet Connection Size | 0.25 inches |
| Outlet Connection Type | SAE |
| Size | 2 x 12 x 6 inches |
| Specification Met | Yes |
| UPC | 700376115741 |
| Unit Count | 1 Count |
| Valve Type | R1234yf Low Side Coupler |
N**I
Great
Good quality. Seems to be the same as the Blue Point version off the Snap on truck. The end does leak oil a bit when stored so best to store it vertically if storing with oil inside.
K**N
Quality
You get what you pay for quality it great
A**Y
Worked perfectly
Well made solid connections
0**8
DISAPPOINTING
Very disappointed with this product and manufacturers warranty. Purchased in March. First use was positive. Every other time I tried to use it, I would have to push down on the fitting to get it to work. Call mastercool because itโs under warranty. They want me to ship it to them at my expense, after requesting RMA and if they felt it wasnโt a problem, I would have to pay to ship it back. I opted to not deal with this and replaced the blue fitting myself. You can clearly see the fitting does not protrude enough to fully depress the valve. In the photos you can see the blue fitting that came with the unit is further to the straight edge and is not long enough. The chrome fitting is the replacement and works fine.
J**O
Great Product
Works like it should, No issues.
Trustpilot
1 week ago
2 weeks ago