Machinery & Truck PartsThe International MaxxForce 7 is Navistar's 6.4-liter (389 cu in) V8 turbodiesel, built from about 2008 to 2015 — the common-rail successor to the VT365 6.0L in International's medium-duty lineup. Machinery and Truck Parts stocks tested used MaxxForce 7 engines, run-tested before shipping and backed by warranty. Call (800) 696-5459 with your truck or serial number for the right fit and a freight quote.
MaxxForce 7 Engine Specifications
| Displacement | 6.4 L (389 cu in) |
| Configuration | 90-degree V8, OHV |
| Bore x Stroke | 3.87 in x 4.13 in |
| Compression ratio | 17.5:1 |
| Horsepower | approx. 200 to 230 hp (up to 300-plus hp high-output) |
| Peak torque | approx. 560 to 662 lb-ft |
| Fuel system | High-pressure common rail (piezo injectors) |
| Induction | Single variable-geometry turbo (VGT) |
| Emissions tech | EGR + DOC + DPF |
| Production years | approx. 2008 to 2015 |
What Trucks and Buses Use the MaxxForce 7
International DuraStar (Class 5 to 7), International TerraStar (Class 4 to 5, where it was the sole engine), the International XT family, and IC/International buses.
MaxxForce 7 in the International Lineup
The MaxxForce 7 succeeded the VT365 6.0L (moving from HEUI to common rail) and is the V8 companion to the larger inline-six MaxxForce DT in International's medium-duty range.
Common MaxxForce 7 Problems and What to Check When Buying Used
A first-generation EGR and DPF emissions diesel — most issues cluster around the emissions and fuel systems, not the block. Check the EGR cooler (coolant loss and white smoke), DPF regeneration history and duty cycle, EGR valve fouling, common-rail injectors (very fuel-quality sensitive), the VGT turbo, and the cooling system. Buy with maintenance records; every engine we sell is run-tested first.
International MaxxForce 7 Engines In Stock
MaxxForce 7 Engine FAQ
What is the MaxxForce 7?
International/Navistar's 6.4-liter (389 cu in) V8 turbodiesel, used in medium-duty International trucks and buses from about 2008 to 2015.
What is the difference between the MaxxForce 7 and the MaxxForce DT?
The MaxxForce 7 is a 6.4-liter V8; the MaxxForce DT is a larger 7.6-liter inline-six. Both are International medium-duty diesels of the same emissions era, used in different chassis and duty ratings.
What trucks use the MaxxForce 7?
International DuraStar (Class 5 to 7), TerraStar (Class 4 to 5, sole engine), the XT family, and IC/International buses.
What emissions equipment does the MaxxForce 7 have?
EGR, a diesel oxidation catalyst (DOC), and a diesel particulate filter (DPF); it is a first-generation emissions-era diesel.
What engine did the MaxxForce 7 replace?
The VT365 6.0L V8, moving from HEUI to high-pressure common rail.
How much power does a MaxxForce 7 make?
Roughly 200 to 230 hp with about 560 to 620 lb-ft, with a 300-plus hp version and up to about 662 lb-ft offered.
Are MaxxForce 7 engines reliable?
The core V8 is capable, but it is a first-gen EGR and DPF diesel, so maintenance and duty cycle matter a lot; highway-use, well-documented units hold up better.
What are the most common MaxxForce 7 problems?
EGR cooler cracking (coolant loss), DPF plugging and failed regens, VGT turbo failures, common-rail injector issues from poor fuel, and cooling-system problems.
More Engines and Parts
Used International Diesel Engines · All Truck Engines · Transmissions · Truck Parts · Contact