• Uses shop air to uphold continual pressure to the cooling system during testing and refill
• 4 quick disconnect vacuum attachments provide quick refilling of the cooling system and eradicates airlocks
• For use with Freightliner, International, Kenworth, Peterbilt, Mack, Volvo, GMC and Sterling cooling systems
• Includes heavy duty vehicle adapters, pressure test regulator, vacuum refill attachment with tubing in a plastic case
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