Mastercool 90066-SF — Dual R134a/R1234yf Evacuation and Charging Combo Kit

Complete professional combo kit for servicing both R134a and R1234yf automotive air conditioning systems. This comprehensive kit allows technicians to vacuum, vacuum leak test, check vent temperatures, charge refrigerant, and add oil/dye to any R134a or R1234yf A/C system. Features a spark-free 6 CFM vacuum pump safe for all refrigerants including R1234yf.

Key Features:

• Dual Refrigerant Capability – Services both R134a and R1234yf systems
• Spark-Free Vacuum Pump – 6 CFM deep vacuum pump safe for all refrigerants
• Complete Kit – Everything needed for evacuation, charging, and diagnostics
• Dual Brass Manifold – R134a and R1234yf gauge set with 60" hoses
• Multiple Couplers Included – R134a and R1234yf standard couplers
• Oil/Dye Injector – Dual R134a and R1234yf compatible
• FREE Infrared Thermometer – 12:1 ratio with laser, -36.4 to 689°F range
• Professional Grade – Built to Mastercool standards for automotive technicians

Specifications:

• Model: 90066-SF
• Type: Complete evacuation and charging combo kit
• Vacuum Pump: Spark-free 6 CFM (single stage)
• Compatible Refrigerants: R134a, R1234yf, all refrigerants
• Hose Length: 60" (152cm)
• Manifold: Dual brass R134a/R1234yf gauge set
• Thermometer Range: -36.4 to 689°F (-38 to 365°C)
• Thermometer Ratio: 12:1 with laser
• SKU: 90066-SF
• HS Code: 84143011

Complete Kit Includes:

1. Spark-Free 6 CFM Vacuum Pump (Single Stage)

Vacuum pump with spark-free components specifically designed for use with all refrigerants including R1234yf systems. The spark-free design eliminates ignition risk when working with mildly flammable R1234yf refrigerant, ensuring safe operation in automotive A/C service.

Related: 90066-220-BLSF-ATEX ATEX Spark-Free Vacuum Pump

2. Dual R134a and R1234yf Brass Manifold Gauge Set

• Dual refrigerant compatibility
• Brass construction for durability
• Accurate pressure readings for both refrigerants
• Professional-grade gauges

Related: 83272 2-Way Piston Valve Manifold for R1234yf | 99936-EU R134a & R1234yf Smart Manifold Gauge Set

3. Set of 60" Hoses

Long 60-inch hoses provide excellent reach for automotive A/C service work, allowing comfortable positioning of equipment whilst working under bonnets.

4. R134a Standard Couplers (Set)

Quick-connect couplers for R134a systems, enabling fast, leak-free connections to service ports.

5. R1234yf Standard Couplers (Set)

Dedicated R1234yf couplers meeting SAE J2843 standards for safe R1234yf service connections.

6. R1234yf Tank Adapter

Adapter for connecting to R1234yf refrigerant cylinders, ensuring proper tank connections.

7. R1234yf Conversion Fittings (2 pieces)

Conversion fittings allow adaptation between different connection types for R1234yf service.

Related: 63736-K Economy R134a/R1234yf Conversion Kit

8. Dual R134a and R1234yf Oil/Dye Injector

Inject UV dye or PAG/POE oil into both R134a and R1234yf systems. Use the couplers supplied with the manifold gauge set to add dye/oil during service procedures.

Related: 53123-YF R1234yf UV Dye/Oil Injector | 53123-A R134a UV Dye/Oil Injector | 90375 Standard Oil Injector

9. FREE 12:1 Infrared Thermometer with Laser

• Temperature range: -36.4 to 689°F (-38 to 365°C)
• 12:1 distance-to-spot ratio
• Laser targeting for accurate readings
• Perfect for checking vent temperatures during A/C performance testing

Related: 52224-A IR Laser Thermometer 12:1 | 52227 Pocket Infrared Thermometer | 52226 Dual Temp Infrared Thermometer

Applications:

• Automotive A/C system evacuation (R134a and R1234yf)
• Refrigerant charging and recovery
• Vacuum leak testing
• A/C performance diagnostics
• UV dye injection for leak detection
• PAG/POE oil injection
• Vent temperature verification
• Mobile A/C service
• Workshop and garage A/C service

Why Choose the 90066-SF Kit?

• Dual Refrigerant Ready – Service both legacy R134a and new R1234yf vehicles
• Spark-Free Safety – Safe for mildly flammable R1234yf refrigerant
• Complete Solution – No need to purchase additional components
• Professional Quality – Mastercool reliability for daily workshop use
• Future-Proof – Ready for R1234yf transition in automotive industry
• Value Package – Includes FREE infrared thermometer

R1234yf Safety:

The spark-free vacuum pump is specifically designed for safe use with R1234yf refrigerant, which is mildly flammable (A2L classification). The spark-free components eliminate potential ignition sources, meeting safety requirements for R1234yf service work. Always follow proper safety procedures when working with R1234yf systems.

Operating Instructions:

Connect the appropriate couplers (R134a or R1234yf) to the manifold hoses. Attach to vehicle A/C service ports. Connect vacuum pump to manifold. Evacuate system to deep vacuum (typically 500 microns or below). Perform vacuum leak test. Charge refrigerant using manifold gauges. Add oil/dye as needed using the dual injector. Verify A/C performance using the infrared thermometer to check vent temperatures.

Maintenance:

Change vacuum pump oil regularly for optimal performance. Keep hoses and couplers clean and free from contamination. Store in a clean, dry location. Inspect O-rings and seals regularly. Never mix R134a and R1234yf refrigerants or use contaminated equipment.

Complete professional combo kit for dual R134a and R1234yf automotive A/C service. Includes spark-free 6 CFM vacuum pump, dual manifold gauge set, couplers, adapters, oil/dye injector, and FREE infrared thermometer.