The Mastercool 90066-SF KIT Dual R134A/R1234yf Evacuation and Charging Combo Kit combines the 90066-BL-SF Vacuum Pump, 66661-AYF R1234yf/R134a Brass Manifold Gauge Set, 53123-YF Oil Injector, and an Infrared Thermometer into one convenient kit. This kit allows the user to vacuum, vacuum leak test, check vent temperatures, charge refrigerant, and add oil or dye to any R134a or R1234yf A/C system.

The 90066-BL-SF Black Series Spark-Free 6 CFM Single-Stage Vacuum Pump is approved for all air conditioning refrigerants including A2L and A3 flammable refrigerants. The Black Series of vacuum pumps is durable and time-tested to stand up to grueling conditions and ensure a long service life. The 90066-BL-SF is capable of performing a variety of applications due to the high power and mobility. The refined cartridge machining process creates an improved surface finish which extends the longevity of the pump life while the expanded internal oil path creates less friction and ultimately less heat. Upgraded seals on the vacuum ensure maximum vacuum power. The grip handle is easy to hold and the user can easily remove the vapor discharge and oil fill port. The oil drain valve is easily accessible as well. The check valve on the vacuum prevents oil backflow from occurring. A large oil level sight glass features both minimum and maximum level indication. The high volume fan provides cool air to the motor and pump while the motor itself is thermally protected with an on/off rocker switch. The cooling fins work to keep the temperature cooler during extended operation. The large yet lightweight reinforced base of the vacuum allows for stable positioning.

The 66661-AYF R1234yf/R134a Brass Manifold Gauge Set features a brass manifold body with 2-1/2 inch silicone-dampened gauges that can be easily recalibrated in the field. The silicone-dampening of the gauges allows for less needle movement which creates readings with higher levels of accuracy. An extra access port is included for a vacuum line.

The 53123-YF Refillable R1234yf Oil Injector features a heavy-duty, anodized aluminum container with dye scales represented in 1/10 ounce, 1/4 ounce, and millimeters. The nylon barrier blue hose meets J2888, EPA, SAE, and UL standards. The R1234yf low side coupler includes an extended disconnect sleeve and meets SAE J639 and J2888. Utilizing the 53123-YF is as simple as connecting the injector the low side of the A/C system and twisting the handle until the desired amount of oil is reached.

The Infrared Thermometer includes a laser pointer for the ability to easily view the measured range of the device. This tool features a 12 to 1 distance to target ratio and temperature range of -36.4 to 689 degrees Fahrenheit.