Peterbilt 337 Parts Diagram Ned Harris 19 Feb 2024 Peterbilt diesel 2015 peterbilt 337 (stock #p-13680) 2015 Peterbilt 337 (Stock #P-13680) | Diesel Particulate Filter (DPF) | TPI 2015 Peterbilt 337 (Stock #P-13680) | Diesel Particulate Filter (DPF) | TPI Check Details ← Peterbilt 379 Headlight Wiring Diagram International 4300 Dt466 Fuse Box Diagram →