Genuine OEM Audi Front Left Steering Knuckle, part number 4M0407253K. This critical structural component connects the wheel hub to the vehicle's suspension and steering systems, allowing the wheel to pivot and move vertically. It is designed for the front left wheel assembly. Weighing 5.435 kg, this robust housing is engineered for strength and durability. Choosing a genuine OEM steering knuckle ensures precise machining for bearing fitment, correct suspension and steering geometry, and proper material strength, which are all vital for safe handling and wheel alignment.