O'Connor Trucks

Specifications

• 2026 Mack Trucks MD Series MD7
• Year2026
• ManufacturerMack Trucks
• Model NameMD Series
• Trim NameMD7
• Generic Type (Primary)Cab & Chassis
• EngineCummins B6.7 Efficiency Series | Cummins B6.7 Performance Series
• Engine Type6.7 Liter
• Engine PowerEfficiency Series: 220 – 260 HP | Performance Series: 280 – 300 HP
• Engine TorqueEfficiency Series: 520 – 660 lb-ft | Performance Series: 660 lb-ft
• Drivetrain
• TransmissionAllison 2500 HS Highway Series 6-speed Fuel Sense NAS | Allison 2500 RDS Rugged Duty Series 6-speed Fuel Sense Premium Parking Pawl | Allison 3000 RDS Rugged Duty Series | 6-speed Fuel Sense Premium PTO and Retarder Options
• SuspensionLeaf: Mack Multi Leaf | Air: Mack AL
• FeaturesOverhead console with storage | Air Suspension Driver's Seat | Flat-Bottom Steering Wheel with Cruise, Phone, and Radio Controls | 12 Volt and USB Outlets | Power Windows and Locks
• Axle CountFront: Meritor | Drive: Meritor
• ratio5.57
• wheelsAluminum
• rear axlesSingle
• front axle12000
• rear axle21000
• acYes
• cruise controlYes
• heated mirrorsYes
• power locksYes
• power windowsYes
• cabConventional
• Wheelbase205"
• gross vehicle weight33000