L9 for Medium-Duty Truck (2017)

Overview

L9 for Medium-Duty Truck (2017)

Cummins is redefining efficiency for customers in 2017 with the newest generation of its L Series engines. The Cummins L9 diesel for 2017 delivers outstanding productivity and the best power-to-weight ratio in its class. Proven reliability keeps your trucks on the road longer. Faster, more accurate service provides even greater uptime, and customers can expect up to 15 percent better fuel economy over the engines of the last decade.

But the most important component we put in every L9 engine is the trust that comes from a legacy of over 27 years and 5 million engines. The L9 comes from a family of proven performers, with a heritage that gets stronger every year.

High-strength components, together with features such as replaceable cylinder liners for easier rebuilding, do more than add life to the engine; they also add to its residual value. The L9 is designed to excel in some of the toughest duty cycles. Cummins designs and manufactures our own engines and aftertreatment systems. In doing so, we’re providing customers greater performance, uptime, durability and efficiency.

The L9 for 2017 features a new Single Module™ aftertreatment system that is not only compact, but also has greater thermal efficiency, for improved engine operation.

Of course, there’s also the trust factor that comes from buying from a company that stands behind its product. Cummins offers the best warranty and extended coverage plans in the industry, and backs them with the largest, most capable support network in North America. We constantly strive to improve efficiency with the latest in realtime diagnostics, for accurate, fast service when needed. All of that leads to greater peace of mind for customers.

The L9 is the total package. No other engine in its horsepower range has this combination of power, proven reliability, rebuildability and longevity.

Specifications

Advertised Horsepower 260-380 hp 194-283 kW
Peak Torque 720-1250 lb-ft 976-1695 N•m
Governed Speed 2100/2200 rpm  
Clutch Engagement Torque 500 lb-ft 678 N•m
Number of Cylinders 6  
Engine Weight (Dry) 1,695 lb 769 kg

Engine Finder Specifications

Markets
Certification Level EPA 2017
Power 260 - 380 hp / 194 - 283 kW
Torque 720 - 1250 lb-ft / 976 - 1695 N•m

Ratings

Engine Model Advertised hp (KW) Peak Torque
LB-FT (N•M) @ RPM
380-370 HP Performance Ratings
L9 380 380 (283) 1250 (1695) @ 1400
L9 370 370 (276) 1250 (1695) @ 1400
350-260 HP Productivity Ratings
L9 350 350 (261) 1150 (1559) @ 1400
L9 350 350 (261) 1000 (1356) @ 1400
L9 330 330 (246) 1000 (1356) @ 1400
L9 300 300 (224) 860 (1166) @ 1300
L9 270 270 (201) 800 (1085) @ 1300
L9 260 260 (194) 720 (976) @ 1300

Features

Cummins designs, develops and supports every component, from the air handling to the exhaust aftertreatment, to work as a totally integrated system – so we can optimize every function better than other engine manufacturers.
  • VGT® Turbocharger from Cummins Turbo Technologies - The patented design is widely recognized as an industry performance leader. Electronic actuation improves precision and responsiveness. The VGT Turbo is a key element in providing exceptional fuel economy and braking horsepower
  • Connected Diagnostics™ - Wirelessly connects your engine to Cummins through a telematics device for immediate diagnosis of a fault alert. Provides a clear recommendation for continued operation, or the need for service, within seconds.
  • XPI Fuel System from Cummins Fuel Systems - Delivers superior performance even in lower engine rpm ranges. Enables multiple injection events per cycle, for improved fuel efficiency with quieter, smoother operation.
  • Single Module Aftertreatment From Cummins Emission Solutions -
    Combines high-efficiency SCR, a more reliable dosing unit and a DPF into a single flow-through unit. It is up to 70 percent smaller, so it’s easier to install, and as much as 30 percent lighter than the aftertreatment units it replaces. Better heat management improves fuel efficiency and minimizes periodic maintenance.
  • Fuel Filters And Lube Filters From Cummins Filtration - Fleetguard® filters protect against corrosion and contaminants with innovative technology, including NanoNet® media, which provides 10 times better protection than conventional fuel filters.
  • Single High-Capacity Electronic Control Module (ECM) - A higher capacity offers faster processing of more information, fully integrated control over the engine and aftertreatment system for optimized performance and improved engine lamp strategy.

Maintenance

Maintenance Item

Miles/Kilometers

Hours

Months

Oil and Filter

15,000 mi

24,000 km

500

6

Fuel Filter

15,000 mi

24,000 km

500

6

Coolant Filter

15,000 mi

24,000 km

500

6

Overhead Adjustment

150,000 mi

240,000 km

5,000

48

Standard Coolant Change

60,000 mi

96,000 km

2,000

24

Coalescing Filter

Every 3rd to 4th Oil Change

 

 

DEF Filter

200,000 mi

320,000 km

6,500

 

Particulate Filter Cleaning

200,000 mi

320,000 km

6,500

 

Consult your Operation and Maintenance Manual for more information.

Brochures Available

Title Bulletin Number Request View  
2017 L9 For Truck Applications Brochure 4971535 Request View  Download
2017 L9 For Truck Applications Brochure - French 4971538 Request View  Download