Mercedes W177 W247 Steering Knuckle Wheel Hub Bearing Disc Cover A2473320700

Mercedes W177 W247 Steering Knuckle Wheel Hub Bearing Disc Cover with integrated wheel hub, bearing, and brake disc shield is a factory-original suspension component, designed specifically for modern Mercedes compact models. It is a precision-engineered component that stabilizes the wheel mounting, ensures correct suspension geometry, and supports safe vehicle handling.

Specifications and technical data

• SKU: A2473320700
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2473320700
• Substitutable numbers: A2473320700, A 247 332 07 00, A0006955599, A 000 695 55 99
• Location on the vehicle: Front, Left
• Category: Steering Knuckles

Purpose and function in the suspension system

The described front left steering knuckle operates at a critical point of the front axle suspension, connecting elements such as the shock absorber, control arms, wheel hub, and braking system. It is responsible for:

• maintaining the correct wheel position relative to the body,
• transferring loads from the road surface to the suspension,
• ensuring stable mounting of the hub and bearing,
• working with the steering system to provide precise turning.

By integrating the hub, bearing, and brake disc shield, this component forms a cohesive assembly that facilitates maintenance and reduces the number of connections prone to wear.

Assembly construction: steering knuckle, hub, bearing, disc cover

The set includes key components responsible for wheel guidance and protection of the braking system. The steering knuckle provides a rigid mounting point for the suspension and steering system, the wheel hub allows for rim installation, and the bearing ensures smooth, quiet rotation under variable loads. The brake disc shield protects the disc from road debris, which promotes even brake performance and reduces the risk of accelerated corrosion.

A unit configured in this way is particularly beneficial for repairs following mechanical damage (e.g., hitting a curb, collision), when it is necessary to replace the entire front left wheel support assembly.

Compatibility, installation, and application

The steering knuckle was developed specifically for the Mercedes A-Class and B-Class W177 / W247 compact platform, which means it fits factory mounting points and complies with the suspension geometry specified by the manufacturer. The vehicle placement is front left side, therefore the element should be treated as dedicated to a specific mounting position.

In practice, installation involves transferring connections from the control arms, shock absorber, tie rod, and braking system components. Using an original steering knuckle with hub and bearing helps maintain proper camber and toe angles, which translates into handling stability, even tire wear, and predictable car behavior during braking and maneuvers.

Product characteristics and advantages of choosing

The presented item belongs to the Steering Knuckles category and comes from the Mercedes brand, which means the construction complies with the manufacturer's factory standards. The used condition of the part allows for an economical repair while maintaining the original design specifications. This is a good solution in situations where it is important to combine reasonable costs with maintaining the proper fit for a specific model.

An additional benefit is the presence of a complete set of elements in one assembly – this limits workshop labor time and reduces the risk of incorrect selection of individual components. After installation, it is recommended to perform a suspension geometry alignment to fully utilize the potential of the newly installed steering knuckle and ensure predictable vehicle handling.

If you are planning a comprehensive repair or upgrade of the front suspension area in your Mercedes and need other elements from the same group, such as right-side steering knuckles, additional hubs, or complete wheel mounting assemblies, check the available parts in the Mercedes Steering Knuckles category.

To better verify the compatibility of this steering knuckle with your car using OEM numbers and reference numbers, it is worth using the practical tips described in the guide Buying parts online without risk – 5 proven ways to verify component compatibility.