info@hdengines.com

Cummins ISX15 Diesel Engines For Sale
View as

Cummins ISX15 Diesel Engines For Sale

The Cummins ISX platform debuted in 1998, replacing the legendary N14 engine and introducing a modern electronic fuel system, dual overhead camshaft design, and improved emissions technology. The engine quickly became one of the most successful heavy-duty diesel engines ever produced.

The ISX15 designation became standard in 2010 as Cummins transitioned to EPA 2010 emissions requirements. While retaining the proven 15-liter platform, the engine added advanced emissions technologies including cooled Exhaust Gas Recirculation (EGR), a Variable Geometry Turbocharger (VGT), a Diesel Particulate Filter (DPF), and Selective Catalytic Reduction (SCR) using Diesel Exhaust Fluid (DEF).

These improvements let the ISX15 keep its industry-leading performance while meeting stricter emissions rules. Factory ratings ranged from about 400 to 600 horsepower with up to 2,050 lb-ft of torque, depending on calibration and application.

Today, the Cummins ISX15 remains one of the most popular engines found in the Freightliner Cascadia, Kenworth T680, Peterbilt 579, International ProStar, Western Star, and Volvo and Mack models equipped with Cummins power, along with heavy vocational trucks, dump trucks, tankers, and heavy-haul equipment. Its outstanding parts availability and service support keep it a preferred engine for owner-operators and large fleets alike.

Cummins ISX15 Engine Specification

Engine Manufacturer Cummins
Engine Model ISX15
Configuration Inline 6-Cylinder Turbo Diesel
Displacement 14.9 Liters (912 cu in)
Fuel System High Pressure Common Rail (HPCR)
Aspiration Variable Geometry Turbocharger (VGT)
Valvetrain Dual Overhead Camshaft (DOHC), 24-Valve
Horsepower 400 to 600 HP
Torque 1,450 to 2,050 lb-ft
Compression Ratio Approximately 17:1
Cooling System Liquid Cooled
Emissions EPA 2007 / EPA 2010 / EPA 2013 configurations
Dry Weight Approximately 2,960 lbs
ECM Cummins CM871, CM2250, CM2350 (varies by model year)

Specifications vary depending on engine serial number, CPL, and emissions package.

Cummins ISX15 Features

The Cummins ISX15 was engineered for maximum durability and efficiency. Key features include a 15-liter inline-six design, high-pressure common rail fuel injection, a Variable Geometry Turbocharger (VGT), and an integrated engine brake (Intebrake).

The engine also uses a robust cast iron block and cylinder head, wet replaceable cylinder liners for easier overhauls, an advanced cooled EGR system, DPF and SCR emissions technology on later models, and excellent aftermarket parts availability. Electronic engine management ties it all together for reliable performance.

Cummins ISX15 Horsepower Ratings

Depending on application, Cummins offered numerous factory calibrations:

Horsepower Torque
400 HP 1,450 lb-ft
425 HP 1,650 lb-ft
450 HP 1,650 to 1,750 lb-ft
485 HP 1,850 lb-ft
500 HP 1,850 lb-ft
550 HP 1,850 to 1,950 lb-ft
600 HP 2,050 lb-ft

Vocational, heavy-haul, and SmartTorque calibrations were also available for specialized applications.

Common Applications

The Cummins ISX15 is commonly found in long-haul semi trucks, regional and heavy-haul tractors, dump trucks, logging trucks, cement mixers, and tanker trucks. It also powers oil field equipment, fire apparatus, RV and motorhome chassis, and heavy construction equipment. This versatility has made it one of the most widely used heavy-duty diesel engines ever built.

Cummins ISX15 Reliability

The Cummins ISX15 has built a reputation for delivering well over one million miles when properly maintained. Regular oil changes, fuel filter replacement, valve adjustments, and proper cooling system maintenance are critical to maximizing engine life.

Like any emissions-equipped diesel engine, components such as the EGR cooler, DPF, SCR system, and VGT turbocharger need periodic service. The engine's robust bottom-end design, replaceable cylinder liners, and widespread parts availability make it an excellent long-term investment.

Why Buy a Cummins ISX15 Engine for Sale from HD Engines?

Fleet owners and owner-operators continue to choose the Cummins ISX15 because it offers exceptional reliability, proven long service life, and excellent pulling power. It also delivers outstanding parts availability, nationwide Cummins service support, high resale value, strong aftermarket support, and lower operating costs when properly maintained.

Whether you're hauling freight across the country or running demanding vocational equipment, the ISX15 delivers the power and durability professionals depend on.

Buy a Cummins ISX15 Engine for Sale from HD Engines

HD Engines specializes in quality used, rebuilt, and remanufactured Cummins ISX15 diesel engines for heavy-duty truck applications. Every engine is carefully inspected and backed by knowledgeable customer support to help you find the correct engine for your truck.

If you're searching for a Cummins ISX15 engine for sale, contact HD Engines today. Our experienced team can match your engine by ESN (Engine Serial Number), CPL, VIN, or application, ensuring a smooth installation and dependable performance. Call (786)377-5210 or email info@hdengines.com.

Frequently Asked Questions

How much does a Cummins ISX15 engine cost?

Used Cummins ISX15 engines for sale at HD Engines start around $15,000, with new surplus units up to about $35,000 depending on year, horsepower, and emissions rating.

What is the difference between the ISX15 and X15?

The X15 is the newer generation that replaced the ISX15. Both are 15-liter Cummins engines, but the X15 has updated electronics and emissions. HD Engines stocks both.

Are your Cummins ISX15 engines run-tested?

Yes. Every Cummins ISX15 engine for sale is run-tested and inspected before shipping, and matched to your truck by ESN, CPL, or VIN.

What horsepower does the Cummins ISX15 come in?

The ISX15 was offered from 400 to 600 HP with 1,450 to 2,050 lb-ft of torque, depending on the factory calibration.

Do you ship Cummins ISX15 engines nationwide?

Yes. HD Engines ships Cummins ISX15 engines across all 50 states with freight insurance. Contact us for a shipping quote to your location.

Compare /5