(Used) 2004 Peterbilt 385, COMPLETE TANDEM CUTOFF- Part Number: 510838 / 511331, Serial Number: HN01016127 / HN01016128, Make: Spicer, Model: DSP40, Ratio: 3.90, Capacity: 18,000 Lbs, Hub Bolts: 10, Brake Type: Drum, Suspension: Air Suspension, Reference images for condition,