Replacement International diesel engines for medium- and heavy-duty trucks — the legendary DT466, the MaxxForce family and the modern A26. Dyno-tested and shipped nationwide.
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International (Navistar) has powered medium- and heavy-duty trucks for generations, and its engines run in everything from school buses and delivery trucks to Class 8 tractors. The legendary DT466 is one of the most durable medium-duty diesels ever built, the MaxxForce family covered medium and heavy duty through the 2010s, and the modern A26 is Navistar's current 12.4-liter big-bore. AutoPartsOcean supplies used, rebuilt and remanufactured International engines to keep these trucks working.
Whether you need a DT466 for a bus or vocational truck, a MaxxForce replacement or a current A26, we match the correct displacement, rating and emissions configuration to your truck and arrange freight to your shop. International's strong presence in school bus and vocational fleets makes minimizing downtime especially important.
International's lineup spans the long-running DT466, the MaxxForce generation and the current A26. Knowing your engine helps us source the right replacement quickly.
The International DT466 is one of the most respected medium-duty diesels ever made, with roots going back decades. Its wet-sleeve design makes it highly rebuildable, and it powers a huge share of school buses, delivery trucks, agricultural equipment and vocational rigs. Used and remanufactured DT466 engines remain in heavy demand because so many of these trucks and machines are still working, and the deep core supply keeps replacement pricing very competitive.
The A26 is Navistar's modern 12.4-liter big-bore engine, powering current International LT and RH Class 8 tractors with ratings from roughly 370 to 515 HP. For any International engine, a dyno-tested used unit is the fastest, lowest-cost route back to service, while a remanufactured engine is restored to specification for the longest life and strongest warranty. We supply long blocks and complete engines and explain core-exchange requirements before you buy.
| DT466 | 7.6 L I6 · ~190–300 HP · medium-duty & buses |
| MaxxForce 7 | 6.4 L V8 · medium-duty |
| MaxxForce DT / 9 / 10 | 7.6–9.3 L I6 · medium & heavy-duty |
| MaxxForce 11 / 13 | big-bore heavy-duty I6 |
| A26 | 12.4 L I6 · ~370–515 HP · current Class 8 |
| Applications | Buses, delivery, vocational & Class 8 tractors |
1,000+ Vehicles Supported Nationwide
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