wheel hub bearing is an important part of your car’s wheel hub assembly 42409-34010, it includes front wheel bearing and rear wheel hub bearing, enabling your wheels to turn smoothly and it plays a crucial role in the safety and handling characteristics of your vehicle. It is comprised of bearings, seals and sensors in one preassembled unit, a wheel hub bearing unit is critical to your car’s performance, from the smoothness of the ride, to fuel efficiency, to the integrity of your anti-lock breaking system (ABS).