D976 Construction

Designed and manufactured by Liebherr, the D976 is one of the best-in-class combustion engines for off-road applications, such as construction. Thanks to its robust design and Liebherr’s extensive experience, this 6-cylinder in-line engine is perfectly suited for the toughest environmental conditions. Delivering up to 620 kW (up to 670 kW in development) with 18 L displacement, the engine provides high power density, and reaches a peak torque of 3641 Nm at 1300 rpm. Not only does the D976 achieve high performance, it also reduces the total cost of ownership by featuring high oil change intervals of more than 1000 hours, and low fuel consumption. Our engine condition monitoring solution and LiDIA diagnostic tool, together with a long life service further extend reliability and minimise engine down time.

Configuration In-line engine
Number of cylinders 6
Displacement 18.0 l
Rated power 565 - 620 kW
Rated speed 1,900 rpm
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What's inside

  • Robust and highly versatile engine design

    Optimized installation space. External piping and tubing reduced to a minimum for a lower risk of leakage.

  • Low total cost of ownership

    1500 h oil change interval which means fewer service interruptions and lower costs for the end-customer

  • Best in class in fuel-consumption

    Thanks to a special turbocharger that makes engine more efficient and enables less fuel consumption.

  • Easy maintenance

    Thanks to a hydraulic valve lash adjustment system.

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Technical data
Configuration In-line engine
Number of cylinders 6
Bore 148 mm
Stroke 174 mm
Displacement 18.0 l
Rated power 565 - 620 kW
Rated speed 1,900 rpm
Peak torque 3,641 Nm at 1,300 rpm
Compression ratio 16.5 : 1
Dimensions (L/W/H) 1,546 / 1,057 / 1,284 mm
Dry weight 1,830 kg
Emission standards EPA Tier 0 (Fuel consumption optimised) / EPA Tier 4f / EU Stage V
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Options available for the engine:

  • Remote oil filter

  • Remote fuel filter

  • Oil level sensor

  • Air compressor

  • A/C Compressor

  • LiDIA diagnostic tool

  • Engine Condition monitoring

  • Exhaust flap

  • Cold start (-25/-40°)

  • Coolant inlet&outlet

  • Oil pan (flat or central)

  • Oil filing pan (cold or hot side)

  • Generator 24V (140 or 180A)

  • Engine feet (transport bracket)

  • Hydraulic valve adjuster

  • Hydrogenated vegetable oil (HVO)

  • Flywheel housing SAE0 & Flywheel SAE18

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Within the scope of the Reman Program, used Liebherr components are remanufactured in accordance with industrial standards.

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