2025 MACK, MD7, Medium Duty Trucks - Tank Trucks - Water, CUMMINS ISB6.7, Automatic, 2025 MACK MD74 Water Truck: built as a robust class 7 truck but rated as class 6, making it perfect for non-CDL operations. Featuring a durable Valew 2000-gallon steel tank with an internal baffle system and load level limiter. Powered by a Cummins ISB 6.7 engine with 300hp and an Allison 3000 RDS transmission, this truck boasts a 5.86 gear ratio, inter-axle/inter-wheel diff locks, and leaf spring suspension for reliable performance. It includes a frame-mounted centrifugal pump with hot shift PTO, independent air controls, and multiple spray options two front, two rear, and one side. The truck is plumbed for a water cannon and equipped with suction plumbing, a 1½" hose outlet, and a ¾" hose bib, along with a complete hose kit for added convenience. With an anti-siphon loading pipe, overfill protection, a Valew-style hose reel, legal lights, mud flaps, and a 50-gallon fuel tank, the MACK MD74 Water Truck is designed for efficiency and versatility on any job site., 300 Horse Power, Spring Suspension, Wheels, 150 Wheel Base, , Axle, Ratio, , VIN