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The D9612 V12 engine sets new standards for power in heavy tactical platforms. Featuring increased displacement and Liebherr’s advanced injection system, it delivers the power-to-weight ratios required in the heavy vehicle segment while reducing fuel and oil consumption.
Backed by a proven civil platform with over 2,000 units in operation since 2016 and more than 47,000 hours of test bench validation, the engine ensures outstanding reliability. Thanks to Liebherr’s in-house engine control system, the D9612 can be optimized for different duty cycles and a wide range of fuel types, making it ideally suited for demanding heavy military missions.

<h2>Robust and highly versatile engine design</h2>

<p>Liebherr’s advanced V12 engine with 29.4-litre displacement and two-stage regulated turbocharging, delivering outstanding power and flexibility.</p>

<h2>Proven reliability</h2>

<p>Basic civil version in production since 2016 with over 2,000 units delivered worldwide.</p>

<h2>Extreme condition validation</h2>

<p>More than 47,000 hours of test benching ensuring robust performance in the most demanding environments.</p>

<h2>Low fuel consumption</h2>

<p>Low fuel and oil consumption thanks to Liebherr’s in-house developed engine control and injection system.</p>

<h2>Modular design  and adaptability</h2>

<p>Modular design and adaptability to various utilisation profiles and fuels, ideal for both heavy military vehicles and specialised civil applications.</p>

<h2>Global support  and digital solutions</h2>

<p>Supported by Liebherr’s global service network and advanced digital solutions for maximum uptime and long-term value for operators.</p>

<h2>Product advantages</h2>

<h2>Photo gallery</h2>

<p>Discover our Training Academy for combustion engines</p>

<p>The Training Academy provides in-depth technical knowledge and practical expertise in the field of combustion engines to help professionals master the challenges of today and tomorrow.</p>

Discover more

<p>LiDIA - engine diagnostic solution</p>

<p>LiDIA is an intuitive and user-friendly engine diagnostic solution, which requires no configuration, facillitates access to the engine environment, and reduces the complexity of diagnostic procedures to the essentials. LiDIA offers a rapid overview of all information on the engine system: status, diagnostic trouble codes, active limitations and failure reactions.</p>

<p>reThink & reFuel</p>

<p>The reduction of global greenhouse gases is a significant challenge of our generation. Striving to reach net zero emissions in the future, Liebherr works on alternative and climate-friendly powertrain concepts. ​</p>

<h2>Discover more</h2>

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The D9612: a robust, high-performance 12-cylinder engine by Liebherr, perfect for defense.

Application	Defense
Engine type	Diesel engines
Configuration	V-engine
Number of cylinders	12
Bore	141 mm
Stroke	157 mm
Displacement	29.4 l
Rated power	850 - 1,400 kW
Dimensions (L/W/H)	1,750 / 2,020 / 1,080 mm

D9612

Defense

Product advantages

Robust and highly versatile engine design

Proven reliability

Extreme condition validation

Low fuel consumption

Modular design and adaptability

Global support and digital solutions

Photo gallery

Technical data

Discover more

D9612