INTERNATIONAL® A26

International® A26 Big Bore Engine


BORN FROM A NEW WAY OF THINKING. BUILT WITH UPTIME IN ITS DNA.

It’s our steadfast commitment to leading the industry in uptime and a fresh way of looking at engine design. With a new team and fresh ideas we set out to deliver the ultimate 12.4-liter engine.

Backed by the industry's best in class 2 year, unlimited mile, unlimited hour warranty.

Up to 5% more fuel-efficient than the 2017 N13 engine.

The A26's uniquely sculpted crankcase, which is isolated from the oil pan through a specially designed rubber gasket absorbs vibration and reduces harshness for a quieter in-cab experience

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A Best-In-Class Standard Warranty Coverage

We stand behind the A26 with a two-year unlimited hours or miles warranty that lets you take it as far as you want, for as many hours/miles as you want. Go ahead, go the extra mile.
  • Optional Engine Warranties

    Up to 7 years and 700,000 miles

  • Standard Engine Warranty

    2 year unlimited mile warranty

Maintenance Intervals

  • Replace Engine Oil and Oil Filter

    Up to 70,000 miles with oil sampling and International Truck approval
    6.5 or greater mpg: 50,000 miles (80,000 km)
    5.5 to 6.5 mpg: 30,000 miles (48,000 km)
    Less than 5.5 mpg: 20,000 miles (32,000 km)

  • Replace Fuel Filter

    At every oil change or 1,300 hours

  • clean dpf

    6.5 or greater mpg: 600,000 miles / 11,000 hours
    5.5 to 6.5 mpg: 500,000 miles / 9,000 hours
    Less than 5.5 mpg: 350,000 miles / 9,000 hours

  • Replace DEF Filter

    300,000 miles (483,000 km)

  • Add Extended Life Coolant Extender

    300,000 miles (483,000 km) / 3 years / 6,000 hours

  • Replace Coolant

    600,000 miles (966,000 km) / 6 years / 12,000 hours

  • Adjust Valve Lash

    At 120,000 miles (193,000 km), at 300,000 miles (483,000 km), then every 300,000 miles (483,000 km)