2011 Dana DSP40, Truck Tractor, Rear Rears (Tandem Rear or Single), Fits to: Peterbilt 384, (Used) 2011 Peterbilt 384, REAR DIFFERENTIAL GEARS ONLY- Part Number: 3200-N-1704, Serial Number: HN03419840, Make: Spicer, Model: DSP40, Ratio: 3.70, Capacity: 20,000 lbs, Reference images for condition For more information about this item, give us a call. We ship Worldwide! (CRG HEAVY TRUCK PARTS) 929 W PULASKI HWY ELKTON, MD 21921, Ratio 3.70, Serial# HN03419840, Casting# HN03419840 1XPVDU9X8BD114808