Mercedes-Benz Wheel Hubs And Bearings

All About Mercedes-Benz Wheel Hubs and Bearings

What are Wheel Hub Assemblies?

A wheel hub assembly goes by many names, whether it's up front or in the rear of your Mercedes-Benz. Some automakers refer to it as a wheel hub bearing or hub bearing assembly, while others simply call it a hub assembly. Others yet just say wheel hub unit or, more comprehensively, hub and bearing assembly.

Put simply, it's a unit comprised of bearings, seals, and sensors (like those for wheel speed). You'll find one per wheel in most Mercedes-Benz models made since 1998. Many of the brand's rear-wheel-drive vehicles, however -- those made before 1997 -- usually have two individual bearings and seals in each front wheel.

The ones you've got are probably located on each wheel. You'll find them between the drive axle and either the brake drums or brake discs, depending on what kind of braking system your vehicle has. Their bolts attach the wheels to the vehicle on the drum or disc side; otherwise, they're bolted on or pressed into the steering knuckle on the axle side. To get a better look at them, simply remove the wheel and then remove (in the case of disc brakes) the brake caliper and brake rotor.

What are Wheel Bearings?

A wheel bearing, you'll find as a set, in the center of the wheel hub, connecting the axles to both the front and rear wheels. In sum, both are important parts of your steering, anti-lock braking (ABS) and traction control (TCS) systems. Their jobs explain why.

What Do Wheel Hubs and Bearings Do for a Mercedes-Benz?

They allow your vehicle to turn freely and smoothly. This makes them critical to everything from turning and changing lanes reliably to simply driving straight. If they begin underperforming at this -- that is, if they begin deteriorating -- your wheels won't be able to turn as well, and they may become unstable. If the metals that make them up degrade, they can fracture, and your wheels can come off, putting you in serious danger during a drive.

What are the Signs of a Failing or Bad Wheel Hub and Bearing?

A bad wheel hub assembly, you'll know from growls, hums, squeaks, chirps, or squeals coming from your tires at low speeds, a shaky steering wheel, and an ABS light on the dash (if your sensor is having trouble reading or sending a signal). Worn or bad bearings, you'll know from whirs, snapping sounds, or clicks as you drive.

Notice any, and replacement is recommended as soon as possible. That means the hub assemblies on each front and rear wheel and their bearings, depending on what's at issue. You can order the parts you need for the project right here online; we stock genuine OEM -- top-quality, guaranteed compatible, and warranty-backed, as only Mercedes-Benz can deliver.

Shop Genuine OEM Wheel Hubs and Bearings Online at Mercedes-Benz USA

We offer markdown pricing and fast shipping anywhere in the States; order today. Contact us if you have any questions.