Model 365

No other truck brings quality, durability, reliability and performance to the vocational market like a Peterbilt. Inside and out, Peterbilt’s vocational vehicles are built to endure the most challenging work environments, providing lasting value and helping make your business a profitable one. Peterbilt’s rugged vocational trucks are built to withstand the rigors of daily heavy-duty service, whatever the demands of the job site may require. Durability, reliability and purposeful design elements are all core features of every truck in the uncompromising Peterbilt vocational lineup.

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Peterbilt’s powerful and versatile Model 365 is built to meet the daily challenges of mixer duty, construction sites and virtually any vocational application. The lightweight, all-aluminum cab with lap seam construction, aircraft grade fasteners and bulkhead style doors is legendary for its durability. With a compact 115-inch BBC, the Model 365 features improved ride and handling and increased maneuverability. The pod-mounted headlamps are durable, corrosion-resistant and cost-effective to replace. They feature halogen bulbs for longer bulb life and outstanding nighttime visibility.


The PACCAR MX-13 superior power platform has been integrated into Peterbilt’s best-in-class vehicles to provide customers maximum power and outstanding fuel efficiency to optimize performance in virtually any application. The combination of a Peterbilt truck and MX-13 Engine offers long-term value through technologically advanced designs with lightweight materials that achieve excellent performance and superior fuel economy. The MX-13 provides longer service intervals, increased uptime, lower operating costs and higher resale value.

Cummins X15 Efficiency

The highest fuel economy in the industry. The longest maintenance intervals, for lower maintenance costs. Increased uptime, for greater productivity and profits. Technology that accelerates service accuracy and speed. The biggest, most capable parts and service network in the industry. Being able to choose the best components and put them together. Top it off with the best resale value of any engine in the industry, and you’ve got a Total Cost of Ownership that puts you in front of your competition. The X15 500 is the ultimate package, pleasing drivers and accountants alike, and can be expected to drive our industry-leading resale value to even greater heights down the road.

Cummins X15 Performance

You want power? You want performance? You want reliability and durability? You can’t do better than Cummins X15. Plus, you get the best fuel economy in the industry and the longest maintenance intervals, for lower maintenance costs. Connected Diagnostics that accelerate service accuracy and speed. Top that off with the largest, most capable parts and service network in the industry. It’s a total package that adds up to the best resale value of any engine in the industry. With a Total Cost of Ownership that makes the competition look like a tiny speck out the side-view mirror.


The Model 365 is available in both a set-forward front axle configuration for a smoother ride or a set-back front axle for increased maneuverability and optimized weight distribution. Set-back front axle configurations are available with FEPTO provisions, including a stationary grille, and are also available with set-forward or set-back REPTO provisions for versatility with job-specific applications. The addition of the multiplex electrical system furthers the versatility by offering diagnostic simplicity and reliability. The 365 is also available on an alternative fuel configuration with the fuel-efficient and powerful Cummins ISL G engine.


Every detail in Peterbilt’s vocational cab and sleeper interiors has been thoughtfully designed to create a comfortable, productive working environment. The ProBilt® interior is specifically designed for vocational applications and features five grab handles and a dash made of durable materials that is easy to clean and shows fewer scratches and scuffs. Power controls for door locks and windows are conveniently located in the door panel, and a multi-functional turnstalk and “dead pedal” provide a comfortable, ergonomic driver environment


The Peterbilt Model 365 natural gas platform vehicles are available with a choice of two engines. The Cummins Westport ISL G 8.9 liter engine offers a 320-horsepower rating and 1,000 lb-ft of torque and provides an extremely efficient fuel-to-power ratio. Also now available is the Cummins Westport ISX12 G with ratings from 320-400 horsepower and 1,150-1,450 lb-ft of torque. These efficient and emissions compliant compressed (CNG) or liquefied natural gas (LNG) power platforms join Peterbilt’s family of on-highway vehicles and alternative fuel vehicles, forming the industry’s most comprehensive environmentally responsible lineup.