You deserve a diesel. Building on a legacy of proven reliability, the L9 for 2017 and newer products features a Single Module™ aftertreatment, reliability improvements and even longer extended coverage options.

Features & Benefits

• American Ingenuity – It’s designed in Indiana and built in North Carolina, for maximum reliability.
• Proven Performance – Building on a legacy of over 5 million C/L Series engines built, with over 30 years of continuous improvement, for total confidence.
• Better Downhill Control – With the VGT exhaust brake and optional compression brake, you get up to 370 hp braking.
• Best Power-to-Weight Ratio In Motorhomes – Leaving more capacity for what you want to bring.
• More Room for Your Gear – Cummins new Single Module aftertreatment weighs up to 30 percent less and is 70 percent smaller than the previous aftertreatment, with improved efficiency.
• Longer Life – Heavy duty design with updated replaceable wet cylinder liners and roller cam followers.
• Peace of Mind – With a standard 5-year/100,000-mile base warranty and optional full engine coverages up to eight years, we’ve got you covered.
• Cummins on Every™ Corner – Over 3,500 authorized locations across North America, to support parts and service needs
• One Source for Service – Your local distributor supports both Cummins engines and Cummins Onan® generators.
• World-Class Support – Call 1-800-CUMMINS™ (1-800-286-6467) for answers to your questions and support for your service needs.
• Connected Solutions – Combine with QuickServe® Online Mobile, Cummins Fault Advisor and Connected Diagnostics,™ for even better support.
• Cummins Guidanz – use your smartphone to talk to your engine and download fault information.