12 0 1997 Mack RD688S Day Cab Truck - E7-400 400HP, 18 Speed Manual $19,900 USD Mack RD688S day cab with 16K front axle, 40K rears, 204" wheelbase, air ride suspension, and wet line. ***MECHANICAL ENGINE!!***, ConditionUsedUsage379,243 MilesDuty ClassHeavy Duty Day Cab TruckHorse Power400 HPEngine ModelMack E7-400Drivetrain6x4Transmission18 Speed ManualSuspensionAir RideRear AxleTandem AxleRear End40,000 lbStock Number6581 MLS Number11317003CategoryDay Cab Semi Trucks Last Updated4/17/2025 LocationCaledonia, NY, US Sold ByCaledonia Diesel (855) 980-___ SHOWNUMBERCall Seller Email Seller Save More Info