The available 6.7L Cummins® Turbo Diesel I6 engine is remarkably lightweight for impressive responsiveness and efficiency while offering exceptional torque on 4500 and 5500 models for outstanding towing and hauling capability. A fully electronically controlled transmission, the Aisin six-speed automatic transmission has been optimized for powerful towing capability on Ram 4500 and 5500 models and features software control for seamless shifting. It is available across the 2021 Ram Chassis Cab lineup (excludes Ram 3500 10K models) and offers Power Take Off capability.
The 6.4L HEMI® V8 engine is the standard engine for the 2021 Ram Chassis Cab. Using variable-cam timing and Fuel Saver Technology, it provides full-rated V8 power when needed and outstanding efficiency when operating in four-cylinder mode. The 8HP75 eight-speed automatic transmission offers reliability and efficiency and features eight speeds and on-the-fly shift mapping to accommodate changing loads and road conditions. The Aisin six-speed automatic transmission is also available and has been optimized for exceptional towing as well as outstanding Power Take Off capability, impressive efficiency and low noise, vibration and harshness.
Show your strength. A reengineered frame incorporates a powerful steel rear frame strength of 50,000 psi with a hydroformed front-rail system.
Extend your range by staying on the job. Choose either the 52-gallon Single Rear-Mounted Fuel Tank, or the available 74-gallon Dual Fuel Tank combination which consists of the 52-gallon tank and a 22-gallon midship fuel tank. It includes two independent fill necks to accommodate your upfit. The system automatically transfers fuel between the tanks, eliminating your need to switch between fuel sources.
The 2021 Ram Chassis Cab is designed to disconnect the front axle automatically when extra traction is not needed and 4x4 mode is disengaged by the driver.
Active grille shutters instantly adapt to speed, load and engine temperature. This provides optimum engine cooling, maximum efficiency and reduced aerodynamic drag.
The available engine shutdown timer turns off your engine/Power Take Off automatically after idling for five minutes. Drivers can also disable the timer when their work requires it.
Both available Aisin automatic transmissions offer PTO capability from the left or right side with 4x4 or 4x2 configurations to accommodate a variety of upfits. Plus, the available 6.7L Cummins® Turbo Diesel engine lets you choose between two speeds by engaging Split-Shaft Mode.
The upfitter-friendly frame features straight flat frame rails behind the cab, is available in standard frame Cab Axle (CA) lengths and comes with pre-drilled frame mounting holes for a variety of applications.
With multiple models to choose from—like the rugged Tradesman® and the refined Laramie®—the 2021 Ram Chassis Cab is ready to work.
The 2021 Ram Chassis Cab can be configured with two cab types, four cab axle lengths and nine wheelbases, offering a multitude of upfit options and capabilities.
Handle the job, whatever it takes. The 2021 Ram Chassis Cab offers multiple upfit possibilities and capabilities to meet whatever work demands.
The 2021 Ram Chassis Cab is powered up and engineered to be upfitted, thanks to the available dual alternator system with a maximum output of 440 amps.
Inside, the 2021 Ram Chassis Cab comes with an integrated switch bank featuring six auxiliary buttons. On models equipped with available Power Take Off (PTO), the sixth auxiliary switch becomes a dedicated PTO switch.
Maneuver with confidence thanks to new available features like Off-Road pages and Trailer Light Check, both displayed in the Class-Exclusive available 7-inch Driver Information Digital Cluster Display. The Off-Road Pages explore pitch and roll and put vehicle dynamics, traction control, gear shifting and more all at your fingertips.
The 2021 Ram Chassis Cab is equipped with Apple CarPlay® support (shown) which enables you to listen to your favorite music, send and receive calls, get available Navigation guidance and access iPhone® apps all through your touchscreen. For Android users, Android Auto™ integration lets you access apps, make calls, pull up your playlists and more.
Stay connected on the go. The 2021 Ram Chassis Cab boasts an available Ramcharger wireless charging pad located in the center console. Or stay powered up by plugging in, with nine total USB ports including four Type A and Type C pairs as well as a Type A connection in the armrest.
We back our diesel vehicles with a 5-year/100,000-mile Diesel Powertrain Limited Warranty and our gas-powered vehicles with a 5-year/60,000-mile Gas Powertrain Limited Warranty. The Powertrain Limited Warranty covers the cost of repairs on all covered powertrain components — engine, transmission and drive system — for most new Ram vehicles. Coverage also includes complimentary towing to the nearest Chrysler, Dodge, Jeep® or Ram dealer, if necessary. The warranty is transferable too, so if you sell your vehicle during the warranty period, the new owner will be covered. Plus, our 3-Year/36,000-Mile Basic Limited Warranty provides bumper-to-bumper coverage of your vehicle, from the body to the electrical system.
The available 270° Surround View Camera uses strategically placed cameras to provide optimal visibility around crowded worksites, while the available Trailer Camera Wiring allows for up to two auxiliary cameras to be positioned on or within your trailer. Mounted above the rear window, the available Center High Mount Stop Light Camera offers impressive visibility with dynamic gridlines.
Stay alert to your trailer's status both on and off the road with the new Trailer Light Check and available Trailer Tire Pressure Monitoring system, with live pressure readings for up to four trailers and up to 12 tires per trailer.
When hooking up a trailer, the available Trailer Reverse Guidance provides an adjustable display screen view of both sides of your truck and trailer. A loose-shipped rearview camera is also available for upfit installation.
Get clear visibility on the road behind you. The new available Digital Rearview Mirror features an LCD monitor that, when switched on, provides a real-time video stream from a rear-facing camera.
The 2021 Ram Chassis Cab was engineered to help keep you safe and secure. Available Forward Collision Warning is designed to warn you when an accident is imminent while Automatic Emergency Braking readies the brakes and displays a warning and audible alert when it senses a potential frontal impact. If you take no action it will automatically apply the brakes—on the truck and trailer—to bring both to a complete stop.
The 2021 Ram Chassis Cab lets you cruise with confidence. With available Adaptive Cruise Control with Stop this truck can maintain a preset distance, selected by the driver, from vehicles in the lane ahead. If slower traffic is detected, the truck will automatically adjust its speed all the way down to 0 MPH.
The available ParkSense® Front and Rear Park Assist System features sensors integrated within the front bumper and your upfit that take the guesswork out of parking and maneuvering in tight spaces. Rear park sensors are shipped to your upfitter for installation.
Available LaneSense® Lane Departure Warning with Lane Keep Assist helps prevent unintentional lane drifts by providing a visual alert and guiding the vehicle back into position.