The Kenworth K370: A Powerful and Versatile Class 7 Cabover
December 23, 2025 - 8:42:18 am

In the demanding world of urban logistics and regional hauling, fleet managers often face a difficult trade-off: do you choose a truck small enough to navigate tight city streets, or a truck strong enough to carry the heavy payloads your business requires? For decades, this compromise often meant sacrificing maneuverability for capacity.

Enter the Kenworth K370.

As a true Class 7 medium-duty vehicle, the Kenworth K370 eliminates the need to compromise. It combines the legendary durability and engineering of a Kenworth with a cabover-engine (COE) design that offers unmatched agility. For businesses operating in congested urban environments—from beverage distributors to furniture movers and construction supply companies—the K370 is the solution that maximizes efficiency and profitability.

At Wallwork Truck Center, we understand that your truck needs to work as hard as you do. This detailed review explores why the Kenworth K370 is the superior choice for buyers who need heavy-duty capability in a compact package.

Engineered for Urban Agility

The defining characteristic of the Kenworth K370 is its cabover design. Unlike conventional "long-nosed" trucks, the K370 sits the driver directly above the engine. This configuration dramatically reduces the overall vehicle length, allowing for a longer body on a shorter wheelbase.

Superior Maneuverability

The K370 features a roughly 55-degree wheel cut, providing a tight curb-to-curb turning radius that conventional trucks simply cannot match. This allows drivers to:

• Navigate narrow alleys and one-way streets with ease.
• make tight turns into loading docks without multi-point maneuvers.
• Reduce the risk of fender-benders in congested traffic.

Enhanced Visibility

Safety in urban environments is paramount. The K370 offers a massive, expansive windshield and large side windows. Because the driver sits higher and closer to the front of the vehicle, sightlines are optimized. Drivers can see pedestrians, cyclists, and smaller vehicles right in front of the bumper—blind spots that are often problematic in conventional trucks.

Powertrain: The Heart of a Workhorse

While it is compact, the K370 is not light on power. It is built to haul serious loads.

The PACCAR PX-7 Engine

At the core of the K370 is the proven PACCAR PX-7 engine. Known for its reliability and fuel efficiency, this 6.7-liter engine delivers the torque necessary to get heavy loads moving, even on steep city grades.

• Power Ratings: typically offers up to 260 horsepower and 660 lb-ft of torque.
• Reliability: The PX-7 is designed for the stop-and-go nature of delivery routes, providing consistent performance and long service intervals.

Allison Automatic Transmission

Pairing the PX-7 with an Allison 2000 or 3000 Series automatic transmission ensures smooth, effortless shifting. For drivers, this means less fatigue at the end of a shift. For fleet owners, it means reduced drivetrain wear and tear, as the transmission optimizes shift points for fuel economy and performance, protecting the engine from driver error.

Heavy-Duty Chassis and Payload Capacity

The "Class 7" designation is where the Kenworth K370 separates itself from lighter delivery vans. With a Gross Vehicle Weight Rating (GVWR) of 33,000 pounds, this truck is built to carry substantial weight.

Robust Frame Construction

The K370 is built on a rugged steel frame that draws on Kenworth's heavy-duty heritage. The chassis is engineered to handle concentrated loads without sagging or twisting. Whether you are hauling pallets of sod, heavy machinery parts, or tanks of liquid, the K370 provides a stable, rigid platform.

High-Capacity Axles

To support the 33,000 lb GVWR, the K370 is equipped with heavy-duty Dana Spicer axles.

• Front Axle: Rated up to 12,000 lbs.
• Rear Axle: Rated at 21,000 lbs.
  This robust suspension setup ensures that the truck remains stable and controllable, even when fully loaded to its maximum capacity.

Versatility: Ready for Any Application

One of the greatest strengths of the Kenworth K370 is its upfit-friendly design. The clear frame rails and variety of wheelbase options make it a favorite for body builders.

At Wallwork Truck Center, we see the K370 successfully deployed in a wide range of industries:

• Box Van / Dry Freight: The most common application for urban delivery, maximizing cubic cargo space.
• Refrigerated Transport (Reefer): Ideal for food and beverage distribution where temperature control and payload weight are critical.
• Stake Bed & Flatbed: Perfect for landscape supply and construction material delivery.
• Rollback / Towing: The maneuverability makes it excellent for recovering vehicles in tight city spots.
• Vactor / Tanker: The high front axle rating supports heavy pumping equipment or liquid tanks.

Driver Comfort and Practicality

A comfortable driver is a productive driver. Kenworth has designed the K370 interior to be a functional, pleasant workspace.

• Easy Entry and Exit: Delivery drivers may enter and exit the cab dozens of times a day. The K370 features wide-opening doors and well-placed grab handles and steps, reducing strain on the driver’s knees and back.
• Spacious Interior: Despite the compact exterior, the cab is surprisingly roomy. It comfortably seats three people with a standard bench seat, or features air-ride captain's chairs for maximum comfort.
• Dash and Controls: The dashboard is ergonomic and intuitive, with all gauges and switches within easy reach. The "Tech Display" provides real-time data on fuel economy, truck systems, and driver performance.

Ease of Serviceability

To maximize uptime, the K370 is designed for easy maintenance. The entire cab tilts forward 55 degrees, providing mechanics with complete, unobstructed access to the engine, transmission, and major components.

For daily pre-trip inspections, a front service panel opens to allow drivers to quickly check fluid levels (oil, coolant, washer fluid) without tilting the cab. This thoughtful engineering encourages regular checks and helps prevent minor issues from becoming major breakdowns.

Experience the K370 at Wallwork Truck Center

The Kenworth K370 proves that you don't need a massive footprint to deliver massive results. It offers the perfect balance of heavy-duty Class 7 capacity and city-friendly agility.

If your business operates in the region and you need a truck that can handle the weight while navigating the streets, the K370 is the investment your fleet needs.

Ready to upgrade your delivery fleet?

Visit Wallwork Truck Center today. Our team of experts can help you spec the perfect Kenworth K370 for your specific application, ensuring you get the most efficient and powerful tool for the job. Call us or stop by to see our inventory in person.