• Four engine options available, providing durability, efficiency and lower operating expenses.
  • 9-liter PACCAR PX-9 engine: High power-to-weight ratio, suitable for heavy payloads (260 to 450 horsepower, up to 1,250 lb.-ft. of torque)
  • 7-liter PACCAR PX-7 engine: Superior performance, minimized costs and increased uptime for medium-duty customers (260 horsepower and up to 750 lb.-ft. of torque)
  • Two natural gas alternatives include the Cummins L9N engine (250-320 horsepower, 660-1,000 lb.-ft. of torque) and the Cummins B6.7N engine (200-240 horsepower, 520-560 lb.-ft. of torque)
• PACCAR TX-8 automatic transmissions: Optimize PX engines for medium duty applications, with a maximum torque rating of 1,000 lb.-ft., best-in-class power-to-weight ratio and up to 5% fuel savings compared to competitors
• Other transmissions options are available from Allison Automatics and Eaton, including manual and UltraShift

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The interior of the Model 537 is ideal for driver comfort and safety with:

• The New, 7" Peterbilt Digital Display: The largest in the medium duty market
• Integrated Collision Mitigation Technology: For added protection in challenging driving conditions
• Easy-to-Reach Multiplexed Switches: Optimally located to reduce driver fatigue
• New, Contoured Multi-Function Steering Wheel: With cruise control, audio and display controls at the driver’s fingertips
• Wider Cab: 2.1-meter cab with ample room for three
• Lower Cab Floor: 3.5” inches lower than previous models for easier ingress and egress
• LED Dome Light: With two reading lights and ambient lighting
• Multi-Functional B-panel: Configurable for any application and available with the SmartNav™ display, storage bin, auxiliary gauges or switches, or a flat panel for aftermarket equipment
• 6.1 cu. ft. of Storage: Including header storage with removable trays, a passenger storage bin, driver-side door map pockets, three storage hooks for small items and additional storage in the center console
• Kick Panels & Plates: Dark kick panels are standard and metal door kick plates are available
• 3-Person Seating: With a bench seat that features best-in-class storage volume and easy access from inside and outside the cab
• Enhanced, Removable Center Console: Includes deep, large cup holders, two USB and two 12V ports