Machinery & Truck PartsThe International T444E is a 7.3-liter (444 cu in) V8 turbodiesel, a commercial medium-duty engine built by Navistar for International trucks and buses from 1994 to 2003, and one of the most durable diesels of its era. Machinery and Truck Parts stocks tested used T444E 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.
T444E Engine Specifications
| Displacement | 7.3 L (444 cu in) |
| Configuration | 90-degree V8, SOHC, 2 valves per cylinder, cast iron |
| Bore x Stroke | 4.11 in x 4.18 in |
| Compression ratio | 17.5:1 |
| Fuel system | HEUI (hydraulic electronic unit injection) |
| Horsepower | approx. 175 to 275 hp (by application) |
| Peak torque | approx. 425 to 620 lb-ft |
| Emissions era | Pre-2004, no EGR |
| Dry weight | approx. 920 lb |
| Production years | 1994 to 2003 |
What Trucks and Buses Use the T444E
Commercial International trucks, most commonly the International 4700 and International 4300 medium-duty, and International 3800 school buses, plus other medium-duty trucks, step and box vans, and vocational chassis.
T444E in the International Lineup
The T444E is a HEUI-injected 7.3-liter V8 that was succeeded by the 6.0-liter VT365 in 2003. It is widely considered one of the most reliable diesels of its generation.
Common T444E Problems and What to Check When Buying Used
The T444E is famous for durability, with a B10 life around 200,000 miles and a B50 life of 350,000-plus miles. On a used unit check the HEUI injectors, the high-pressure oil pump, the IPR valve and ICP sensor, the camshaft position sensor (a classic no-start cause), the glow plugs and valve-cover (UVCH) harness, and the turbocharger. Most issues are well understood and repairable, and every T444E we sell is run-tested before it ships.
International T444E Engines In Stock
T444E Engine FAQ
What is the International T444E?
A 7.3-liter (444 cu in) V8 turbodiesel used in commercial International medium-duty trucks and buses from 1994 to 2003.
What trucks use the T444E?
Most commonly International 4700 and 4300 medium-duty trucks and International 3800 school buses, plus other medium-duty and step or box van chassis.
Is the T444E a good engine?
Yes. It is considered one of the most reliable and durable diesels of its generation, with strong parts availability.
How many miles does a T444E last?
The median (B50) life is 350,000-plus miles, with about 90 percent (B10) reaching around 200,000 miles; well-maintained units routinely exceed these.
What are common T444E problems?
HEUI injectors, the high-pressure oil pump, the IPR valve and ICP sensor, the camshaft position sensor, the glow plugs and UVCH harness, and the turbocharger.
What does the "444" mean on a 7.3-liter engine?
It refers to the displacement in cubic inches (about 444 cu in), which equals 7.3 liters. It is not a 4.44-liter engine.
What fuel system does the T444E use?
A HEUI system; a high-pressure oil pump intensifies injection pressure, so the oil system is central to fueling and starting.
What years was the T444E made?
From 1994 through 2003, after which Navistar replaced it with the 6.0-liter VT365.
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