View 28 Photos View 0 Videos 2021 Freightliner T12664ST Sleeper Semi Truck - 72" Integral Sleeper, 505HP, 12 Speed Automatic $41,750 USD Used 2021 Freightliner Cascadia 126 Sleeper Semi Truck with 72" integral sleeper, 505 HP DD15AT diesel engine, 12-speed Detroit automatic transmission, tandem rear axle, and 250-gallon fuel... ConditionUsedUsage708,530 MilesDuty ClassHeavy Duty Sleeper Semi TruckHorse Power505 HPEngine ModelDD15ATTransmission12 Speed AutomaticSleeper TypeIntegral SleeperSleeper Size72"SuspensionAir RideRear AxleTandem AxleRear End40,000 lb 3.08 ratioStock Number379735 MLS Number12397129CategorySleeper Semi Trucks Last Updated4/11/2026 LocationNew Castle, DE, US Sold ByPenske Used Trucks (855) 942-___ SHOWNUMBERCall Seller Email Seller Save More Info