Used 2019 Peterbilt Trucks For Sale in Pennsylvania
Shop used 2019 Peterbilt trucks in Pennsylvania, including 579 daycab and sleeper models with Cummins or PACCAR power and fleet-ready specs.
Learn more
Have used 2019 peterbilt truck to sell? List it here to reach thousands of buyers.
About Used 2019 Peterbilt Trucks in Pennsylvania
The 2019 Peterbilt 579 is commonly spec'd with either a PACCAR MX-13 or Cummins X15, typically in the 450 to 510 horsepower range. Rear axle ratings around 40,000 pounds and ratios such as 3.42 or 3.55 are common on fleet and owner-operator style trucks in this class. Manual 10-speed and automated manual transmissions both show up regularly, and each has a different resale and operating profile. A manual can appeal to buyers who want simplicity and direct control, while an automated transmission can help with driver onboarding and consistency in stop-and-go or mixed-duty work. Air ride suspension, engine brakes, disc or drum brake setups, aluminum wheels, dual fuel tanks, and sliding fifth wheels are all common features worth comparing closely from one truck to the next.
Sleeper-equipped 2019 Peterbilts, including 58-inch and 72-inch Unibilt high roof layouts, are better suited for over-the-road applications where storage, bunk space, and fairing configuration matter. A day cab version is typically the better choice for local or regional hauling, port work, and dedicated trailer pools where wheelbase, maneuverability, and lower tare weight can outweigh sleeper space. Buyers in Pennsylvania should also pay attention to corrosion exposure, especially on frame rails, crossmembers, battery boxes, fairing brackets, and cab mounts if the truck has spent winters in road salt. Tire condition, DPF and aftertreatment service history, clutch life on manual units, and any record of EGR, turbo, or NOx sensor work can tell you more about the truck than a polished exterior.
A good used 2019 Peterbilt truck should be evaluated as a total operating package, not just by mileage or appearance. Check wheelbase against the trailer lengths you plan to pull, verify fifth wheel travel and kingpin settings, and confirm axle ratio matches your cruising speed and terrain. Interior condition, steering wheel wear, seat base play, dash warning history, and signs of idle-heavy use can help separate a well-maintained highway tractor from one that has had a harder life. For many buyers, this model year hits a practical middle ground: new enough to offer modern cab design and emissions-era refinement, but established enough that parts availability, service knowledge, and market familiarity are strong.
Frequently Asked Questions
What are the most common configurations for a used 2019 Peterbilt truck?
The most common configuration in this category is the Peterbilt 579, usually set up as either a conventional day cab or a conventional sleeper tractor. Sleeper versions are often found with 58-inch or 72-inch Unibilt high roof sleepers for over-the-road work, while day cabs are more common in regional and local applications. Typical supporting specs include tandem rear axles rated around 40,000 pounds, air ride suspension, sliding fifth wheels, and highway gearing in the 3.42 to 3.55 range.
Which engine is better in a 2019 Peterbilt 579, the Cummins X15 or the PACCAR MX-13?
Both engines are widely used and each has a strong place in the market. The Cummins X15 is often favored for broad service support, strong parts availability, and familiarity across mixed fleets. The PACCAR MX-13 is a common choice in Peterbilt tractors and can be a good fit for buyers who value an integrated powertrain and fuel-efficient highway performance. The better choice usually comes down to your shop's experience, local dealer support, maintenance records, and the exact horsepower and transmission pairing on the truck you are evaluating.
Is a 2019 Peterbilt day cab or sleeper better for Pennsylvania operations?
That depends on the freight pattern. A day cab is generally better for local delivery, regional hauling, short shuttle work, and operations where lower weight and tighter maneuvering matter. A sleeper is the better fit for longer lanes, overnight runs, and teams or solo drivers who spend extended time away from the terminal. In Pennsylvania, where routes can include urban congestion, turnpike miles, and Appalachian grades, buyers should also consider wheelbase, axle ratio, and engine brake performance along with the cab style.
What should I inspect first on a used 2019 Peterbilt truck?
Start with maintenance history and emissions-system service records, then inspect the truck for frame corrosion, suspension wear, tire wear patterns, and brake condition. On 2019 highway tractors, the aftertreatment system deserves close attention, including DPF, DEF, sensors, and any documented fault history. You should also check for driveline vibration, steering play, clutch wear on manual trucks, sleeper HVAC performance on sleeper models, and signs of heavy idle time or poor PM discipline. A pre-purchase inspection with ECM downloads is a smart step on any used truck in this class.
Are used 2019 Peterbilt trucks a good value compared with newer models?
For many buyers, yes. A used 2019 Peterbilt truck can offer the aerodynamic cab design, driver-friendly interior, and highway efficiency expected from a modern fleet tractor while avoiding the cost of a newer replacement cycle unit. This model year is established enough that service shops know the platform well and the used market has enough history to compare common specs and problem areas. The real value depends on maintenance quality, engine and transmission combination, emissions history, and how well the original spec matches your intended operation.