A26 Engine

THE INTERNATIONAL® A26
BIG BORE ENGINE.

"I put the International® LT® with A26 Engine at the top of my preferred truck list!"
Greg Weaver, Veteran Driver


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


A26 Engine mobile image

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.

Engine efficiency specifications *600-700 lbs lighter than traditional 15L engines
Engine creation video See the making of an engine from the ground up.
Scroll down to see more

Millions of miles of testing. Zero left to chance.

"We've had zero downtime with these trucks." Steve Sperbeck, General Manager, ERL Intermodal.

DYNO


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Hundreds of thousands of dyno testing hours

ROAD


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Millions of real-world test miles

TEST UNITS


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Hundreds of engines tested

Engine performance video Uptime Generator with The Erb Group of Companies

BUILT FROM THE BLOCK UP


Based on the MAN® D26 engine platform, then perfected for the North American market.

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Engine overview image
Engine overview image Overview
Features a low friction coating for increased fuel economy and larger piston pin and connecting rod for optimal load distribution and durability.
Engine overview image Piston New Piston Assembly

Features a low friction coating for increased fuel economy and larger piston pin and connecting rod for optimal load distribution and durability.

Engine overview image
Higher strength and more fatigue resistant than traditional gray iron because of its thinner walls that reduce weight and maximize payload. Sculpted to dampen vibration for a quieter in-cab experience.
Engine crankcase image Crankcase COMPACTED GRAPHITE IRON (CGI) CRANKCASE

Higher strength and more fatigue resistant than traditional gray iron because of it’s thinner walls that reduce weight and maximize payload. Sculpted to dampen vibration for a quieter in-cab experience.

/ Engine crankcase image
Its design achieves the perfect balance between weight, strength, cooling and breathing, leading to better uptime and fuel economy.
Engine cylinder head image CYLINDER HEAD CYLINDER HEAD

Its design achieves the perfect balance between weight, strength, cooling and breathing, leading to better uptime and fuel economy.

Engine cylinder head image
Stainless steel, laser welded, single stage EGR cooler delivers proven durability and performance, in a compact, easy-to-service design.
Engine EGR image EGR COOLER EGR COOLER

Stainless steel, laser welded, single stage EGR cooler delivers proven durability and performance, in a compact, easy-to-service design.

Engine EGR image
Gear teeth are produced using a grinding process for smoother, harder gear surfaces that create less noise.
Engine gear train image GEAR TRAIN GEAR TRAIN

Gear teeth are produced using a grinding process for smoother, harder gear surfaces that create less noise.

Engine gears image

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.

Two Year Unlimited Miles Warranty

Industry-Leading Service Intervals

“We are significantly reducing our maintenance costs.”
Bobby Post, President and CEO, W.L.A., Inc.


The A26's design allows for increased service intervals keeping you on the road longer.

Oil Change: Now up to 70,000 miles.*
*With oil sampling and International Truck approval.

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Diesel Particulate Filter Cleaning: Now up to 600,000 miles*
*With greater than 6.5 mpg

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BEST-IN-CLASS B10 LIFE

International B10 standards require 90% of all engines to endure 1.2 million miles before an engine rebuild is required.

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Specifications

“It gets me where I need to go, when I need to go.”
Mike Diorio, Driver, ERL Intermodal


The A26 is packed with efficient muscle and built to set a new standard in its class.

Horsepower Ratings LT and RH
HP @ 1700 RPM Torque [ft*lb] @ RPM Governed speed [RPM] High idle speed [RPM]
365* 1250 @ 1000 2100 2200
370* 1350 @ 1000 1800 2000
400 1550-1750 @ 975 1800 2000
410 1450 @ 1000 1800 2000
410 1450-1650 @ 1000 1800 2000
430 1550 @ 1000 1800 2000
450 1700 @ 1000 1800 2000
450 1550-1700 @ 1000 1800 2000
475 1700 @ 1000 1800 2000

*Rating not available in LT® Series

Horsepower Ratings HV and HX
HP @ 1700 RPM Torque [ft*lb] @ RPM Governed speed [RPM] High idle speed [RPM]
365* 1250 @ 1000 2100 2200
370 1350 @ 1000 2100 2200
390 1450 @ 1000 2100 2200
410 1450 @ 1000 2100 2200
430 1550 @ 1000 2100 2200
450 1700 @ 1000 2100 2200
475 1700 @ 1000 2100 2200
500 1750 @ 1000 2100 2200

*365 rating is not available in HX Series.

Technical Specifications
Engine Type Diesel, 4-Cycle
Configuration Inline 6-Cylinder
Displacement 12.4 L (758 cu. in.)
Bore & Stroke 4.96 in. & 6.54 in. (126 mm & 166 mm)
Compression Ratio 18.5:1
Aspiration Variable Geometry Turbocharger with Charge Air Cooler
Combustion System 2500 bar High Pressure Common Rail
Engine Lubrication 42 Quarts (40 L)
Total Engine Weight 2,299 lbs. (1043 kg)
Valves 4 Valves Per Cylinder, Single Overhead Camshaft
B10 Design Life 1,200,000 mi (1,931,000 km)
Maintenance Intervals
Replace Engine Oil and Oil Filter Up to 70,000 miles with oil sampling and International Truck approval
Greater than 6.5 mpg: 50,000 miles (80,000 km)
5.5 to 6.5 mpg: 35,000 miles (56,000 km)
Less than 5.5 mpg: 20,000 miles (32,000 km), 500 hours, or 6 months
Replace Fuel Filter At every oil change or 1,300 hours
Diesel Particulate Filter Cleaning Greater than 6.5 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 600,000 miles (966,000 kilometers)
Replace Coolant 1,200,000 miles (1,931,000 km) / 8 years / 15,000 hours
Adjust Valve Lash For normal service vehicles with an annual mileage over 30,000 miles (48,000 km): At 120,000 miles (193,000 km), at 300,000 miles (483,000 km), then every 300,000 miles (483,000 km)

For severe service applications that average up to 30,000 miles (48,000 km) per year: At 1,000 hours, at 3,000 hours, then every 3,000 hours
ONE BEST-IN-CLASS ENGINE.
FOUR WORLD RENOWNED TRUCKS.

"If we give them the right tools, good drivers perform even better.”
Jim Pinder, Corp. Fleet Director, The Erb Group of Companies

This A26 engine represents the best of who we are and what our vision is. So it makes sense that we're putting it in the world's most driver-centric trucks that do the same - starting with the uncompromising International® LT®, RH™, HX™ and HV™ Series.
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