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Inland / Kenworth Trucks / Cummins X15 Productivity Series (2024)

Equipment and specifications shown on this page have been republished from manufacturer website and are subject to change without notice. Consult your Inland dealer at time of ordering for standard and optional equipment. Visit our Cummins X15 Efficiency Series and Cummins X15 Performance Series pages for more information on those engines.

The Power to Deliver.

You get the best of both worlds with horsepower and torque curves optimized for the most challenging applications. Whether you’re transporting raw materials in quad-axle dump trucks, moving 130,000 lbs down the interstate, or fall into a multi-purpose category, you’ll get access to whatever blend of power or efficiency you desire with the EPA 2024 X15 Productivity Series.

The Best of Both Worlds.

2024 X15 Productivity Series ratings from 430-500 hp share a hardware set with the Cummins X15 Efficiency Series ratings. The higher output ratings from 565-605 hp use higher-capacity components from the X15 Performance Series ratings. This dual engineering strategy ensures that the X15 Productivity Series has the output required to meet power demands while optimizing fuel economy and operating costs. The rpm levels are set to match the job requirements of specific applications. Cummins continues to offer both Rear Engine Power Takeoff (REPTO) and Front Engine Power Takeoff (FEPTO) on X15 Productivity Series engines.

Ratings

X15 Productivity Series ratings use the same engine hardware as the X15 Efficiency Series when choosing 500 hp or less. These ratings provide access to peak torque starting at 950 RPM and additional 300 rpm or engine operating range compared to the standard X15 Efficiency Series ratings. This extra rpm range provides longer access to peak power – helping you accomplish the most demanding tasks.

RatingHorsepower (Kw)Peak Torque Lb-ft @ 950 RPM (n*m)
X15 430V430 (321)1650 (2237)
X15 450V450 (336)1650 (2237)
X15 450V450 (336)1750 (2373)
X15 470V470 (350)1750 (2373)
X15 500V500 (373)1650 (2237)
X15 500V500 (373)1850 (2508)
*Multi Torque Rating
RatingHorsepower (Kw)Peak Torque Lb-ft @ 1000 RPM (n*m)
X15 565V
565 (421)
1850 (2508)

X15 605V
605 (451)
1850 (2508)

X15 605V
605 (451)
2050 (2779)

Specifications

The X15 Efficiency series is optimized to deliver the power you need, with 430 hp to 605 hp and 1650-2050 lb-ft of peak torque – more than enough to get you off the line, down the road and up the steepest hill. But what’s really impressive is what happens when you crest the hill and take your foot off the accelerator. That’s when the most powerful engine brake in the industry kicks in, and you just ease on down the road.

Advertised Horsepower430-605 hp321-451 kW
Peak Torque1650-2050 lb-ft2237-2779 N•m
Governed Speed2000 – 2100 RPM
Clutch Engagement Torque1000 lb-ft1356 N•m
Number of Cylinders6
System Weight3152 lb1,430 kg
Engine (Dry)2,961 lb1,343 kg
Aftertreatment System*191 lb87 kg

Maintenance Intervals

If combined percent idle time plus power takeoff (PTO) time is greater than 40% for Shorthaul, Normal, or Light intervals, use the next lower drain interval. 
*For Premium Blue users, the Fuel Filter interval matches the ODI.

ItemSevere
< 5.5 mpg
Normal
5.5 – 6.5 mpg
Light
>6.5mpg
DPF Ash Maintenance***250,000 – 400,000 mi400,000 – 600,000 mi600,000 – 800,000 mi
DEF Filter300,000 mi / 6,750 hours
Valvetrain500,000 mi / 10,000 hours / 60 months
Drive Belts500,000 mi / 10,000 hours /
60 months
Crankcase BreatherN/A
HC Doser
N/A
Maintenance lamp will illuminate wh***Cummins recommends using Cummins genuine DPFs over cleaning of the DPF at the DPF ash maintenance interval. Users can experience extended DPF ash maintenance using the DPF maintenance fault lamp (FC5383).en DPF cleaning is required. 
ItemSevere
< 5.0 mpg
Shorthaul
5.0 – 5.9 mpg
Normal
6.0 – 6.9 mpg
Light
>7.0 mpg
Oil Drain interval25,000 mi50,000 mi60,000 mi75,000 mi
X15 Oil Drain with Valvoline PB*30,000 mi55,000 mi65,000 mi80,000 mi
X15 Oil Drain with Cummins OilGuard™**extensions availableextensions availableextensions availableUp to 80,000 mi
130,00 km
X15 Fuel Filter***25,000 mi50,000 mi60,000 mi75,000 mi
***Cummins recommends using Cummins genuine DPFs over cleaning of the DPF at the DPF ash maintenance interval. Users can experience extended DPF ash maintenance using the DPF maintenance fault lamp (FC5383).

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