Mercedes Benz M272 Engine Parts Diagram |top|

This article provides a complete, component-by-component breakdown of the M272, using a virtual diagram to explain what each part does, where it fails, and why it matters.

Located on the front of all four camshafts to alter valve timing. 2. Intake and Exhaust System

As a V6 engine, the M272 rests on fluid-filled engine and transmission mounts. Over years of heat cycles and engine torque, these mounts collapse and leak their hydraulic fluid. Collapsed mounts transmit heavy vibrations directly into the vehicle's cabin. Sourcing Parts and Reference Tools

Located at the rear of the right cylinder head; causes oil consumption and smoking when it fails. Mercedes Benz M272 Engine Parts Diagram

Belt-driven unit mounted to the front of the block.

: These indicate the crankshaft's 40° After Top Dead Center (ATDC) position, which is used for checking the basic timing of the camshafts and the balance shaft.

Before diving into the nuts and bolts, it is critical to understand that the M272 exists in two distinct displacements: 2.5L (M272E25) and 3.5L (M272E35). While the block architecture is identical, internal components like the crankshaft, pistons, and connecting rods differ. Additionally, the M272 underwent a significant revision in 2007 (often called the "Facelift" version) to fix the infamous balance shaft sprocket issue. Intake and Exhaust System As a V6 engine,

The plastic triangular lever on the front of the intake manifold frequently snaps. Instead of buying a completely new manifold from Mercedes, you can purchase aftermarket aluminum repair kits to replace just the broken linkage. 3. Engine Block, Pistons, & Crankcase

Over time, the rubber hardens, leaking oil into the spark plug wells.

Positioned directly in the "vee" of the engine block, driven by the timing chain. Sourcing Parts and Reference Tools Located at the

Forged steel connecting rods mated to lightweight, cast aluminum pistons.

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.