Mercedes Benz M272 Engine Parts Diagram
Includes internal runner flaps and actuator vacuum pods.
Located deep behind the timing cover; replacement requires pulling the engine.
The die-cast aluminum alloy foundation featuring Silitec (silicon-aluminum) cylinder liners.
Understanding the Mercedes-Benz M272 Engine The Mercedes-Benz M272 engine is a naturally aspirated V6 gasoline powerplant produced from 2004 to 2014. It succeeded the reliable M112 engine, introducing dual overhead camshafts (DOHC), four valves per cylinder, and continuous independent variable valve timing (VVT) for both intake and exhaust.
In conclusion, the Mercedes Benz M272 engine is a reliable and powerful engine that requires regular maintenance and occasional repairs. The engine parts diagram provided in this article should help you understand the components of the M272 engine and facilitate any repairs or maintenance. By understanding the common problems that can occur with the M272 engine, you can take steps to prevent them and ensure that your engine runs smoothly for years to come. Mercedes Benz M272 Engine Parts Diagram
Features silicon-aluminum liners to reduce friction and wear.
Six individual "coil-on-plug" units sitting directly above the spark plugs.
Features integrated oil galleries and coolant jackets.
When you look at a technical diagram or a service manual for the M272, it's not just about identifying parts. It's about understanding the precise procedures for maintenance and repair. Includes internal runner flaps and actuator vacuum pods
The M272 is built on an aluminum crankcase with silicon/aluminum-lined cylinders, designed for lightness and thermal efficiency.
The M272 was revolutionary for its time, featuring a lightweight aluminum block, four valves per cylinder, and continuous variable valve timing on both intake and exhaust cams — a first for a Mercedes-Benz V6. This design not only improved horsepower and torque but also significantly reduced emissions and noise compared to its predecessor.
The engine has an oil separator mounted to the cylinder block/valves that controls crankcase pressure and directs oil vapor back into the intake. Over time, the internal plastic diaphragms tear, leading to vacuum leaks, rough idling, high oil consumption, and unmetered air entering the engine. 3. Coolant Thermostat
The parts diagram highlighted a small, gear-shaped component hidden deep in the "timing case" section: – the balance shaft sprocket. The diagram's exploded view showed it nestled between the crank and the intermediate gear. A tiny note in the factory manual read: "Inspect for wear on drive gear teeth." The engine parts diagram provided in this article
Secures the crankshaft tightly to the engine block.
: A counter-rotating shaft used to reduce vibration, located within the V-bank. Internal Systems & Sensors Intake Manifold
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The Mercedes-Benz M272 engine is a sophisticated piece of engineering that rewards a meticulous owner. Its parts diagram is not just a schematic – it’s a roadmap to understanding why the engine behaves as it does, where it fails, and how to fix it. Whether you’re a DIY mechanic replacing an intake manifold or a professional diagnosing a timing chain rattle, the M272 parts diagram is your essential guide.
This breakdown of the serves as a comprehensive guide to the anatomy, critical components, and common wear points of this iconic 90-degree V6 power plant. Core Engine Components & Layout
: The block is cast aluminum with a 90° V-angle and silicon/aluminum-lined cylinders. Internal components include a Counter-rotating Balance Shaft , iron-coated aluminum pistons, and forged steel connecting rods.