BMW F30 F25 F48 N20 Turbocharger 49477-52750 - Used Original Parts

Diagnosis and Common Symptoms

As a Senior BMW Technician, I frequently see the 49477-52750 unit reach its service limit due to oil starvation or wastegate wear. Primary indicators of failure include a "Drivetrain Malfunction" warning on the iDrive screen and the vehicle entering limp mode. Common fault codes associated with this unit are 120308 (Charging pressure control, plausibility: Pressure too low) and P0299 (Turbocharger Underboost). Physically, you may notice a high-pitched whistling or "siren" sound during acceleration, visible blue smoke from the exhaust, or a distinct metallic rattling noise from the wastegate actuator linkage when the engine is idling.

Introduction

This is a Genuine used turbocharger assembly that has been meticulously inspected and salvaged from low-mileage donor vehicles. Every unit undergoes a rigorous multi-point bench test to ensure the turbine shaft rotates freely and the wastegate seals correctly under vacuum. Choosing a Genuine used part ensures that the casting metallurgy and internal tolerances match the high-pressure demands of your N20 engine, providing a reliable alternative to expensive new replacements or inferior aftermarket units.

Product Details

• Brand: Mitsubishi / BMW Genuine
• Model Compatibility: BMW F30 (320i/328i), F25 (X3 xDrive28i), F48 (X1)
• Part Name: Turbocharger with Wastegate Actuator
• Part Number: 49477-52750 / 7624535
• Condition: Genuine Used (Tested Working)
• Notes: Turbine blades show no signs of chipping or erosion. Wastegate pivot point is tight with minimal play.