Mounted on the 2026 MACK MD7 is a White River Distributors 3,400-gallon propane tank, built for durability and optimized capacity, giving you greater delivery volume while maintaining the maneuverability of a medium-duty platform. Key Features: • 3,400-gallon propane bobtail tank by White River Distributors • Mack MD7 medium-duty chassis • Cummins 6.7L diesel engine • Allison 3000 RDS automatic transmission • Increased tank capacity for improved delivery efficiency • Built for reliable propane transport and route delivery This unit is a strong addition to any propane delivery fleet, offering the capacity, power, and reliability needed to keep operations running smoothly.