Shell Shell HD Phosphate Free Antifreeze/Coolant [1-gal./3.79-Liter. Jug] 550049205 Part No: 550049205

Shell HD Phosphate-Free Antifreeze/Coolant (Part 550049205) is a high-performance, OAT-based coolant formulated for heavy-duty and mixed-fleet applications. It delivers reliable protection against corrosion for aluminum-intensive engines, cast iron cylinder blocks, brass, and copper. With a convenient 50/50 premixed solution, it’s ready for use without dilution and provides freeze protection to –34 °F (–37 °C) and boil-over protection to 265 °F (with pressure cap). This coolant meets ASTM D6210 and Caterpillar ELC1 specifications, supporting extended maintenance intervals, improved heat transfer, and reduced component wear. Ideal for on-road trucks, off-road equipment, and industrial cooling systems. Available in a 1-gallon jug from Wofford Truck Parts.