Mercedes-Benz W212 Engine Air Filter Housing A2720941304 - Used Original Parts

Diagnosis and Common Symptoms

From the workshop floor, a compromised engine air filter housing on the M272 engine is a primary cause of frustrating, hard-to-diagnose performance issues. A crack, often invisible without close inspection, or a faulty seal creates a vacuum leak, allowing unmetered air to enter the intake manifold post-MAF sensor. This disrupts the precisely calculated air-fuel ratio, leading to a cascade of engine management faults.

Symptoms manifest as a rough or hunting idle, hesitation during acceleration, and a noticeable decrease in fuel efficiency. Drivers may also hear a distinct whistling or hissing sound from the engine bay. On the diagnostic side, this typically triggers the Check Engine Light with fault codes pointing to a lean fuel mixture, such as P0171 (System Too Lean Bank 1) and P0174 (System Too Lean Bank 2). In severe cases, it can also lead to MAF sensor rationality faults or random misfire codes (P0300).

Introduction

Restore the correct breathing and performance of your vehicle's M272 engine with a Genuine Mercedes-Benz air filter housing. This is not an aftermarket copy; it is an original component carefully removed from a donor vehicle. Each unit has been meticulously inspected and verified by our technicians to ensure structural integrity and guarantee factory-spec fitment, eliminating the risk of air leaks that plague inferior replacements.

Product Details

• Brand: Mercedes-Benz

• Model Compatibility: W212 (E350), W204 (C300/C350), X204 (GLK350), W221 (S350) with M272 V6 Engine.

• Part Name: Engine Air Cleaner Assembly

• Condition: Genuine Used (Tested Working)

• Notes: All mounting points, housing clips, and the critical MAF sensor seating area have been inspected and confirmed to be intact and free from cracks. We recommend using new seals upon installation to ensure a perfect air-tight fit.