Mercedes-Benz W203 M271 Supercharger - Used Original Parts

Diagnosis and Common Symptoms

A failing supercharger on the M271 engine typically presents with a noticeable whining or grinding noise from the front of the engine that increases with RPM, most audible under acceleration. As the internal bearing or clutch mechanism degrades, drivers often report a loss of low-end torque, sluggish throttle response, and in advanced cases, a rattling noise at idle caused by a worn magnetic clutch pulley. The Engine Control Unit (ME9.7) may log fault codes related to boost pressure deviation or intake manifold pressure sensor implausibility, since the supercharger's inability to build correct pressure directly affects the MAP sensor readings. In severe failure scenarios, metal debris from a disintegrating bearing can enter the intake tract, leading to a Check Engine Light (MIL) and a noticeable drop in overall engine performance.

Introduction

This listing is for a Genuine Used M271 Supercharger sourced from a W203 donor vehicle undergoing dismantling. As a critical component for engine boost delivery, this unit has been carefully removed and physically inspected to ensure the pulley and clutch mechanism operate smoothly. Every unit in our inventory is Tested to confirm rotational integrity and absence of internal bearing play before listing. Choosing a Genuine Used part ensures perfect metallurgical compatibility with your engine block, avoiding the fitment issues sometimes associated with aftermarket reproductions.

Product Details

• Brand: Mercedes-Benz
• Model Compatibility: W203 (C-Class) equipped with M271 Kompressor Engine
• Part Name: Supercharger (Kompressor) Unit
• Condition: Genuine Used (Tested Working)
• Notes: Unit has been visually inspected for housing cracks and manually rotated to check for smooth bearing operation. Internal clutch engagement mechanism tested for functionality. Does not include the intake manifold gasket; a new gasket set is recommended for installation.