L9 For Motorhomes (2017)

Power 300 - 450 hp
224 - 336 kW

Torque 860 - 1250 lb-ft
1166 - 1695 N•m

Certification EPA 2017

Select an Application

Overview Medium-Duty Truck Fire & Emergency Motorhome & RV Engines Motorcoach School Bus Transit Bus Truck Equipment Manufacturers and Body Builders

Overview:

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.

Configuration	Inline 6
Displacement	543 CU IN	8.9 L
Lube Oil Capacity	24-28 QT	23-26 L
Idle Speed	700-800 RPM
Optional Compression Brake	Up to 370 HP @ 2600 RPM
No Load Governed Speed	2400 RPM
Engine Weight (Dry)	1,695 LB	769 KG
Aftertreatment Weight	132-179 LB	60-81 KG
Injection Pressure	32,000 PSI
Biodiesel Compatibility	Up to B20

Engine Model	Advertised HP (kW)	Governed Speed (RPM)	Peak Torque LB-FT (N•M) @ RPM
L9 450	450 (336)	2200	1250 (1695) @ 1400
L9 400	400 (298)	2200	1250 (1695) @ 1400
L9 380	380 (283)	2200	1150 (1559) @ 1400
L9 350	350 (261)	2200	1000 (1356) @ 1400
L9 330	330 (246)	2200	1000 (1356) @ 1400
L9 300	300 (224)	2200	860 (1166) @ 1300

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 CumminsOnan® 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.

Maintenance Item	Miles/Kilometers	Hours	Months
Oil and Filter	20,000 MI 32,000 KM	500	12
Fuel Filter	20,000 MI 32,000 KM	500	12
Overhead Adjustment	150,000 MI 240,000 KM	5,000	48
Coalescing Filter	60,000 MI 96,000 KM	2,000