2023 Peterbilt 579 — 80" UltraLoft Sleeper | Premier Sterling Grey | VIN: [VIN] A premium owner-op spec 579 UltraLoft — one of three identical like-spec units available. Loaded from the factory with the top MX-13 rating, locking rears, and the full-size UltraLoft sleeper dressed in Premier Sterling Grey. Three trucks, same spec, same condition — fleet pricing available. Powertrain & Chassis PACCAR MX-13 | 510 HP / 1,850 lb-ft torque | EEO-18F112C12 automated transmission | 3.08 ratio | 242" wheelbase | 13,200# front / 40,000# rear | Peterbilt Low Air Leaf suspension | Full locking rear differentials Cab & Comfort 80" UltraLoft dual bunk sleeper | Premier Sterling Grey interior | Built-in refrigerator | 15" digital display | Full walk-through cab