Description
The 2021 Peterbilt 579 UltraLoft is built for serious over-the-road professionals who demand performance, comfort, and profitability in every mile. Whether you’re an independent owner-operator or managing a growing fleet, this truck is spec’d to maximize uptime, fuel efficiency, and driver satisfaction.
Under the hood, you’ve got the proven Cummins X15 — one of the most respected engines on the road. Known for its durability, torque, and fuel efficiency, the X15 delivers the pulling power you need for heavy loads while keeping operating costs under control.The aerodynamic design of the 579 reduces drag and boosts fuel economy. Lightweight components increase payload capacity, helping you generate more revenue per trip. Peterbilt’s reputation for quality and resale value makes this truck a smart long-term investment. If you’re looking for a truck that works as hard as you do — one that keeps you comfortable, profitable, and on schedule — the 2021 Peterbilt 579 UltraLoft with a Cummins X15 and 12-speed Endurant transmission is ready to go the distance. Price does not include state and local taxes; tags; registration or title fees; dealer-imposed fees, including document preparation, processing or servicing fees, or any optional equipment or upfitting work selected by buyer. Valid while supplies last. Images shown may not reflect actual vehicle.
Sleeper: UltraLowSpecifications
Year2021
ManufacturerPETERBILT
Model579
Mileage421,502 mi
VIN1XPBD49X0MD754470
ConditionUsed
Stock Number1529262
Horsepower450 HP
Engine ManufacturerCUMMINS
Engine Displacement15 l
Fuel TypeDiesel
Number of Speeds12 Spd
Ratio2.64
Drive6x4
SuspensionLow Air
Number of Rear AxlesTandem
Gross Vehicle Weight RatingClass 8: 33,001 pounds or greater
Gross Vehicle Weight52,000 lb
Tires22.5 LP
WheelsAluminum
Wheelbase233 in
Drive SideLeft Hand Drive
Sleeper Size80 in
ColorWhite
Year2021|
ManufacturerPETERBILT|
Model579|
Mileage421,502 mi|
VIN1XPBD49X0MD754470|
ConditionUsed|
Stock Number1529262|
Horsepower450 HP|
Engine ManufacturerCUMMINS|
Engine Displacement15 l|
Fuel TypeDiesel|
Number of Speeds12 Spd|
Ratio2.64|
Drive6x4|
SuspensionLow Air|
Number of Rear AxlesTandem|
Gross Vehicle Weight RatingClass 8: 33,001 pounds or greater|
Gross Vehicle Weight52,000 lb|
Tires22.5 LP|
WheelsAluminum|
Wheelbase233 in|
Drive SideLeft Hand Drive|
Sleeper Size80 in|
ColorWhite|
