Used Peterbilt Truck and Trailer Trucks For Sale

Used Peterbilt truck and trailer units cover a wide range of long-haul applications, from classic owner-operator specs like the 379 and 389 to newer aerodynamic highway tractors like the 387 and 579. In this category, buyers are usually comparing operating style as much as age. A long-hood Peterbilt is often chosen for heavy-haul image, serviceability, and traditional drivetrain specs, while a 579 is typically aimed at fuel economy, driver comfort, and fleet-friendly maintenance intervals. If the listing includes both truck and trailer, pay close attention to how the trailer type matches the intended freight. A reefer setup, for example, adds a second power unit, additional maintenance points, and a different earning profile than a dry van pairing.

The drivetrain is where most used Peterbilt decisions are made. Common engines in this class include PACCAR MX-13, Cummins X15, and Caterpillar C15 or 6NZ in older long-hood trucks. Horsepower often falls in the 455 to 550 range, with transmissions ranging from 12-speed automated manuals to 13-speed and 18-speed Eaton Fuller manuals. Rear axle ratios such as 3.25 or 3.36 can tell you a lot about the truck's intended use, including fuel mileage versus pulling performance. Suspension specs also matter. Peterbilt Flex Air is common on highway units and is generally well regarded for ride quality. For buyers looking at a truck and trailer combination, wheelbase, fuel capacity, and axle configuration should be checked against trailer swing clearance, bridge law needs, and the loads you plan to haul.

On used equipment, condition details are more important than badge loyalty. Look closely at overhaul history, emissions system service, clutch age, transmission work, and whether maintenance records are available from Peterbilt dealers or independent shops. For newer emissions-era trucks, ask about DPF cleaning, sensor replacement, forced regens, and software history. For older 379 or 389 trucks with CAT power, verify the quality and documentation of any inframe or platinum overhaul, along with rear-end, power divider, and cooling system work. Tire percentage, brake percentage, drum or rotor condition, and clear title status are basic checkpoints, but a serious buyer should also confirm ECM mileage, idle hours, APU operation, and any recent work on injectors, turbo, aftertreatment, or suspension components.

Cab and sleeper spec can make a major difference in resale and day-to-day usability. Many used Peterbilt highway tractors in this category include premium interiors, factory refrigerators, inverters, bunk heaters, and aluminum wheel packages. Those details matter for retention, driver comfort, and downtime reduction on over-the-road runs. If the truck is being sold with a trailer, inspect the trailer with the same discipline as the tractor. Reefer hours, compressor history, floor condition, tire and brake life, and temperature performance are all critical. A well-matched used Peterbilt truck and trailer package can be a cost-effective way to enter the market or expand a small fleet, but the best value usually comes from verified maintenance history and a spec that fits the freight lane, not just a clean exterior or popular model number.