Machinery & Truck PartsThe International MaxxForce 13 is a 12.4-liter inline-six Class 8 diesel used in highway and heavy vocational trucks. For the 2010-era engines represented in current inventory, ratings typically span the mid-300s through the high-400s horsepower, with multiple torque calibrations and Advanced EGR emissions hardware. Correct replacement depends on the engine serial number, horsepower rating, ECM calibration, emissions generation, chassis wiring, and accessory arrangement. Machinery and Truck Parts stocks tested used MaxxForce 13 engines with warranty coverage and nationwide freight.
International MaxxForce 13 Engine Specifications
| Displacement | 12.4 L (758 cu in) |
| Configuration | Inline-6, 4-stroke turbodiesel |
| Bore x Stroke | 126 mm x 166 mm (4.96 in x 6.54 in) |
| Aspiration | Series turbochargers with charge-air cooling on relevant model years |
| Fuel system | High-pressure common rail |
| Horsepower | Typically about 365 to 475 hp for 2010-era on-highway ratings |
| Peak torque | Typically about 1,250 to 1,700 lb-ft |
| Governed speed | Commonly about 2,100 rpm |
| Emissions system | Advanced EGR with DOC/DPF on 2010-era engines; later configurations vary |
| Applications | Class 8 highway and heavy vocational trucks |
| Production era | Primarily late 2000s through mid-2010s |
What Trucks and Equipment Use the MaxxForce 13
The MaxxForce 13 was installed in International Class 8 platforms including ProStar, LoneStar, WorkStar, PayStar, and selected severe-service or vocational configurations. Applications include highway tractors, regional-haul trucks, dump and mixer chassis, heavy construction trucks, and other high-GVW work. Chassis, cooling packages, emissions hardware, oil pans, flywheel housings, and accessory drives differ, so verify the complete engine and vehicle information before purchase.
MaxxForce 13 vs. MaxxForce DT and MaxxForce 7
The MaxxForce 13 is a 12.4-liter Class 8 engine and is substantially larger than the medium-duty MaxxForce DT 7.6-liter inline-six and MaxxForce 7 6.4-liter V8. The three engines serve different chassis classes and are not interchangeable. Use the model comparison to identify the family, then match the MaxxForce 13 by serial number, rating, electronics, emissions equipment, and chassis application.
Common MaxxForce 13 Problems and What to Check When Buying Used
Identify the emissions generation and review fault history before comparing engines. On 2010-era Advanced EGR versions, inspect the EGR coolers and valves, cooling system, DOC/DPF condition, regeneration history, turbocharger and air-management system, exhaust connections, and sensors. Also check cold-start behavior, oil pressure, blow-by, coolant condition, fuel-system operation, ECM connectors, front and rear seals, and signs of overheating. Confirm whether the ECM, turbos, EGR hardware, exhaust manifolds, air compressor, flywheel housing, and accessory brackets remain with the engine.
International MaxxForce 13 Engines In Stock
International MaxxForce 13 Engine FAQ
What size engine is the MaxxForce 13?
The International MaxxForce 13 is a 12.4-liter (758-cubic-inch) inline-six Class 8 diesel engine.
How much horsepower does a MaxxForce 13 make?
For the 2010-era on-highway engines common in this inventory, ratings typically range from about 365 to 475 horsepower. Confirm the exact calibration from the serial number and ECM information.
How much torque does a MaxxForce 13 produce?
Typical ratings range from roughly 1,250 to 1,700 lb-ft, depending on horsepower calibration and application.
What trucks use the MaxxForce 13?
The MaxxForce 13 was used in International Class 8 trucks such as ProStar, LoneStar, WorkStar, PayStar, and selected severe-service and vocational models.
What is the difference between MaxxForce 13 and MaxxForce DT?
The MaxxForce 13 is a 12.4-liter Class 8 engine. The MaxxForce DT is a 7.6-liter medium-duty engine used in smaller truck and bus applications.
What emissions system does a 2011 MaxxForce 13 use?
A 2011 engine typically uses International Advanced EGR with a diesel oxidation catalyst and diesel particulate filter rather than the later SCR configuration. Verify the engine serial number and chassis emissions label.
What should I check before buying a used MaxxForce 13?
Confirm the serial number, horsepower and torque calibration, emissions generation, ECM, turbo and EGR hardware, DOC/DPF compatibility, cooling package, flywheel housing, accessories, test results, and warranty terms.
How do I order a MaxxForce 13 engine?
Choose an in-stock engine above and call (800) 696-5459 with its stock number, truck year, model, VIN, engine serial number, and delivery ZIP code.