FJC Truck Cooling System Pressure Test and Refill Kit (43655) is essential for maintaining the efficiency of heavy-duty vehicle cooling systems. Designed for compatibility with major truck brands, this kit uses shop air to maintain constant pressure, allowing for precise testing and easy refilling. The kit's quick disconnect feature streamlines the refill process, minimizing downtime and improving reliability. Specifications and Dimensions Compatibility: Freightliner, International, and more Pressure Test Regulator and Vacuum Refill Attachment Includes: Adapters for various truck models Features Quick disconnect system for fast and efficient refills Eliminates the need for unreliable rubber plugs Benefits Reduces maintenance time for truck cooling systems Increases the accuracy of pressure tests