Marko Barjaktarović's video: New Peterbilt 579 2021

With the 579, the combination of aerodynamic innovation and powertrain optimization delivers confidence and efficiency for the most cost-conscious companies. Peterbilt's flexible Aero Packages provide the right combination of fairings, skirts and closeouts to exceed application-specific aerodynamic requirements. Available in a day cab, or with detachable sleeper, that adds versatility and longevity of a second life for highest resale value. LIGHTEST AUTOMATED TRANSMISSION ON 567 & 579 MODELS Peterbilt is proud to offer a proprietary automated transmission with a 12-speed, twin countershaft. It’s the lightest heavy-duty transmission currently in production at just 657 pounds, making it 105 pounds lighter than the comparable Eaton UltraShift Plus AMT. KEY FEATURES & SPECIFICATIONS ENGINE CUMMINS ISX12 | CUMMINS ISX15 | PACCAR MX-11 | PACCAR MX-13 HORSEPOWER 310-425 | 400-600 | 335-430 | 405-510 TRANSMISSION FULLER | ALLISON SLEEPER 44" (LOW ROOF) | 58" (LOW ROOF OR MID ROOF) | 72" | 80" FRONT AXLE DANA SPICER 12 – 22K Ibs | MERITOR 12 – 14.6K Ibs WIDE TRACK AVAILABLE REAR AXLE SINGLE: DANA SPICER 21 – 26K Ibs | MERITOR 21 – 23K Ibs TANDEM: DANA SPICER 40 – 46K Ibs | MERITOR 40 – 46K Ibs SUSPENSION PETERBILT FLEX® AIR | PETERBILT LOW AIR LEAF | PETERBILT LOW LOW AIR LEAF | PETERBILT AIRTRAC | REYCO 79KB | REYCO 102AR