The Peterbilt Model 567 with All-Wheel Drive allows the company's flagship vocational truck to be work-ready for tough jobsites and extreme terrains. All-wheel drive is available in a set-back front axle configuration. It includes the Marmon-Herrington MT-22H front drive axle rated at 22,000 lbs and the Dana Spicer DS4636 drive axle rated at 46,000 lbs. It can be ordered with a range of auxiliary components, including transfer cases, to meet an array of customer needs. Or the drive axle can be used in place of the transfer case.