The International Prostar
ProStar® is a driver’s truck. A more productive truck. The most efficient and innovative Class 8 truck on the road.
How did we achieve this? By talking to fleet managers and drivers like you about the challenges you face and the features you need. After all, you’re the ones who turn our trucks into your home offices, the ones who depend on us every day.
The way we see it, setting the pace in the truck industry is all about working together. Day after day,. Year after year. Mile after mile. With the goal of keeping your business running at its best.
Prostar Long Haul
When the road is your home, it’s best to make the most of it. And with equal parts head-turning style and optimal performance, the LoneStar® does just that. Our DriverFirst® design philosophy has resulted in the quietest, roomiest cab in its class, along with advanced ride and handling.
Whether you are a hazmat carrier or if you are a cattle hauler, the International® LoneStar® turns heads. Whatever you haul, drivers will appreciate the improved ergonomics, ingress and egress for a smoother ride with a tough haul.
The LoneStar® has the big bore power performance of the Cummins X15 engine for the heaviest of hauls. But it’s also got the efficiency to keep costs down, with an aerodynamic design that reduces drag and adds fuel efficiency.
Prostar Heavy Haul
On the highway or in the city, one thing is undeniable — the International® LoneStar® turns heads. But besides its classic good looks, there are new features to enjoy, including better side visibility, useful for navigating congested streets.
- ISX15: 400 – 550 hp, 1,450 – 2,050 lb.-ft. torque
- N13: 390 – 475 hp, 1,450 – 1,700 lb.-ft. torque
- Meritor 23,000 lbs.
- Dana Spicer 23,000 lbs.
- Meritor 40,000 – 46,000 lbs.
- Dana Spicer 40,000 – 46,000 lbs.
- Mono-leaf: 12,000 – 14,000 lbs.
- Taper Leaf Spring: 12,000 – 14,000 lbs.
- Air Ride: 20,000 – 46,000 lbs.
- VariRate Spring: 23,500 lbs.
Highly adaptable to a wide variety of needs, the Cummins ISX15 is one of the most popular heavy-duty engines in North America. Choose the performance that matters to you with horsepower ratings options from 400hp-600hp and up to 2,050 lb.-ft. of torque. A standard engine brake and impressive power confirm the ISX15 is a proven and compliant platform, always ready to get your job done.
When you need extreme horsepower without sacrificing on fuel economy, the ISX15 is the engine for your job. The Cummins ISX15 engine delivers impressive fuel economy with improvements to the water pump, fuel pump, piston oil rings and piston cooling nozzle to reduce parasitic losses. The XPI Fuel System delivers a precise quantity of fuel at ultra-high pressures. This, together with more robust electronic engine controls, enables multiple injection events per cycle.
The Cummins ISX15 combines the brute power needed to haul loads up steep inclines with fuel economy that your bottom line will appreciate. With a broad range of horsepower ratings up to 600hp and 2,050 lb.-ft. of torque, the ISX15 has the power to get any job done right. The variable geometry turbocharger enhances response and control with electric actuation for infinite adjustment, providing exact boost at any rpm.
Compacted graphite iron (CGI) delivers higher strength and more fatigue resistance than traditional gray iron. Navistar has always used compacted graphite iron for the N13 crankcase.
Single overhead camshaft uses industry-leading assembled camshaft technology. This allows lobes to be produced from tool grade steel, delivering unsurpassed durability.
Single stage EGR cooler has been designed to maximize durability. The no fin design delivers consistent performance by preventing soot plugging. Stainless steel throughout the EGR cooler prevents corrosion. Laser welding delivers excellent thermal fatigue resistance.
2200 bar high pressure common rail fuel system precisely controls fuel atomization, with multiple injection technology. Smooth engine operation and clean combustion extend engine life.
Foamed wiring harnesses allow mounting brackets to be molded into the wiring harness. Bolts secure the wiring harnesses, delivering the most consistent routing and clipping of any wiring harness technology.
Polymer coated bearings are used on the crankshaft main journal bearings and connecting rod bearings. When oil pressure is low, such as while starting the engine, the coatings protect the engine from wear as oil pressure builds.