The Peterbilt 579 delivers the perfect pairing of aerodynamic innovation and powertrain optimization to give the most cost-conscious companies confidence. Available in day cab or with a detachable sleeper, and with thoughtful upgrades for enhanced efficiency, you can count on the Model 579 every single day.
MX Engines
The all-new PACCAR MX-13 and MX-11 EPA24 engines are build for unbeatable uptime. From fuel savings to extended service intervals, and reduced engine weight of up to 450 lbs, MX engines give you the power and potential to level up the long haul.
Aero Package
Flexible Peterbilt Aero packages come with fairings, skirts, and closeouts that exceed application-specific aerodynamic requirements.
Lightest Automated Transmission
Peterbilt’s proprietary automated transmission ensures powerful performance with a 12-speed twin countershaft. And it is the lightest heavy-duty transmission in production, weighing in at just 657 lbs, so you can make the most of every load.
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See the Alternative Fuel Peterbilt 579
KEY FEATURES & SPECIFICATIONS
Peterbilt Specification Summary
| Category |
Details |
| Engine |
PACCAR MX-11 PACCAR MX-13 Cummins ISX12 Cummins ISX15 |
| Horsepower |
PACCAR MX-11 335–430 hp
PACCAR MX-13 405–510 hp
Cummins ISX12 310–425 hp
Cummins ISX15 400–600 hp
|
| Transmission |
Fuller Allison |
| Sleeper |
44" (Low Roof)
58" (Low or Mid Roof)
72"
80"
|
| Front Axle |
Dana Spicer 12–22K lbs
Meritor 12–14.6K lbs
|
| Wide Track |
Available |
| Rear Axle |
Single: Dana Spicer 21–26K lbs Meritor 21–23K lbs
Tandem: Dana Spicer 40–46K lbs Meritor 40–46K lbs
|
| Suspension |
Peterbilt Flex® Air Peterbilt Low Air Leaf Peterbilt Low Low Air Leaf Peterbilt AirTrac Reyco 79KB Reyco 102AR |
* All weights shown as lbs.