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.
Ease of Operation.
The Cummins X15 Efficiency Series makes every driver better. With access to ADEPT features on every Efficiency Series engine (compatible transmissions required) and the available of EX ratings – the X15 powered powertrain operates better than ever. Features like SmartCoast and SmartTorque 2 can be enabled without requiring a unique calibration, and EX ratings provide the next level of powertrain optimization with access to four unique powertrain electronic features.
Uptime.
The 2020 X15 Efficiency Series incorporated key product improvements to meet the 2021 emissions standards. Cummins measures the performance of product launches through metrics like “percent zero touch” and “touches per thousand” in order to quantify product reliability and uptime. The 2020 product launch was the best performing product launch to date, and with minimal changes for the 2021 launch, we expect he trend to continue.
Cummins offers the longest service intervals in the industry – keeping you on the road and out of the service bay.
Ratings
Called either “standard” or “straight torque” ratings, the following rating choices provide similar performance in all gears.
| Rating | Horsepower (Kw) | Peak Torque Lb-ft @ 950 RPM (n*m) |
|---|---|---|
| X15 450 | 450 (336) | 1650 (2237) |
| X15 450 | 450 (336) | 1750 (2373) |
| X15 450 | 450 (336) | 1850 (2508) |
| X15 500 | 500 (373) | 1650 (2237) |
| X15 500 | 500 (373) | 1850 (2508) |
SmartTorque (ST) ratings provide an additional 200 lb-ft torque in the top 2 gears, keeping drivers in the efficient gears longer.
| Rating | Horsepower (Kw) | Peak Torque Lb-ft @ 950 RPM (n*m) |
|---|---|---|
| X15 400ST | 400 (298) | 1450/1650 (1966/2237) |
| X15 400ST | 400 (298) | 1550/1750 (2102/2373) |
| X15 400ST | 400 (298) | 1650/1850 (2237/2508) |
| X15 450ST | 450 (336) | 1450/1650 (1966/2237) |
| X15 450ST | 450 (336) | 1550/1750 (2102/2373) |
| X15 450ST | 450 (336) | 1650/1850 (2237/2508) |
| X15 500ST | 500 (373) | 1650/1850 (2237/2508) |
Specifications
| Advertised Horsepower | 400-500 hp | 298-373 kW |
| Peak Torque | 1450-1850 lb-ft | 1966-2508 N•m |
| Governed Speed | 1700 RPM | |
| Clutch Engagement Torque | 1000 lb-ft | 1356 N•m |
| Number of Cylinders | 6 | |
| System Weight | 3,152 lb | 1,430 kg |
| Engine (Dry) | 2,961 lb | 1,343 kg |
| Aftertreatment System* | 191 lb | 87 kg |
Maintenance Intervals
| Item | Severe < 5.5 mpg | Normal 5.5 – 6.5 mpg | Light >6.5mpg |
|---|---|---|---|
| DPF Ash Maintenance*** | 250,000 – 400,000 mi | 400,000 – 600,000 mi | 600,000 – 800,000 mi |
| DEF Filter | 300,000 mi / 6,750 hours | ||
| Valvetrain | 500,000 mi / 10,000 hours / 60 months | ||
| Drive Belts | 500,000 mi / 10,000 hours / 60 months | ||
| Crankcase Breather | N/A | ||
| HC Doser | N/A |
| Item | Severe < 5.0 mpg | Shorthaul 5.0 – 5.9 mpg | Normal 6.0 – 6.9 mpg | Light >7.0 mpg |
|---|---|---|---|---|
| Oil Drain Interval | 25,000 mi | 50,000 mi | 60,000 mi | 75,000 mi |
| X15 Oil Drain with Valvoline PB | 30,000 mi | 45,000 mi | 55,000 mi | 80,000 mi |
| X15 Oil Drain with Cummins OilGuard™** | extensions available | extensions available | extensions available | Up to 100,000 mi |
| X15 Fuel Filter* | 25,000 mi | 50,000 mi | 60,000 mi | 75,000 mi |
*For Premium Blue users, the Fuel Filter interval matches the ODI.