Mastercool 43306 Heavy‑Duty Cooling System Pressure Test & Refill Kit – Shop‑Air Leak Tester and Vacuum Fill Tool with Vacuum Attachments & Heavy‑Duty Adapters – U.S. Quality and Support

✔️ BUILT FOR PROFESSIONAL FLEET MAINTENANCE – Designed for heavy-duty trucks from Freightliner, International, Kenworth, Peterbilt, Mack, Volvo, GMC, and Sterling

✔️ SHOP-AIR PRESSURE SYSTEM – Utilizes regulated shop air (recommended 90–125 psi) to maintain constant pressure during service—no bulky hand pumps needed

✔️ QUICK-DISCONNECT VACUUM ATTACHMENTS – Four fittings ensure fast coolant refill and eliminate airlocks for a smoother, faster service

✔️ AVOID RUBBER PLUG FAILURES – Engineered to remove unreliable plugs or bladders—cuts setup time and boosts diagnostic accuracy

✔️ HEAVY-DUTY ADAPTER SET & REGULATOR – Includes color-coded adapters (#2 white, #12 black, #13 red, #14 green, #15 yellow), pressure regulator, refill hose, spindle A, and vacuum attachment

✔️ ORGANIZED STORAGE SOLUTION – Blow-molded case keeps components protected and easily accessible

✔️ U.S. QUALITY & SUPPORT – Backed by Mastercool’s U.S.-based customer service team and known for dependable tools trusted by professional technicians