Mercedes W177 Wheel Carrier Hub Rear Left N/S Axle Suspension A2473571300

The Mercedes W177 Rear Left Suspension Knuckle/Hub is an original component of the drivetrain, designed for installation on the rear axle on the driver's side. Thanks to its factory geometry and precise fit for the W177 platform, the part ensures stable handling, correct suspension operation, and secure wheel mounting under demanding operating conditions.

Specifications and technical data

• SKU: A2473509100
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2473509100
• Substitutable numbers: A2473509100, A 247 350 91 00, A2474231900, A 247 423 19 00, A2474230112, A 247 423 01 12, A2473571300, A 247 357 13 00
• Location on the vehicle: Rear, Left
• Category: Other Transmission & Drivetrain

Purpose and Function in the Suspension System

The rear axle knuckle with hub in the Mercedes A-Class W177 generation is responsible for precise wheel guidance, transferring loads from the control arms to the body, and maintaining correct suspension geometry. Its placement on the rear left side of the vehicle means the component works with the braking system, wheel bearing, and control arm mountings, directly influencing:

• driving stability during acceleration and braking,
• even tire wear,
• precision of toe and camber angles,
• comfort of bump absorption in the rear of the vehicle.

A well-chosen, original rear knuckle is particularly important after a collision, mechanical suspension damage, or when replacing components from different sources, where dimensional and mounting compatibility is crucial.

Advantages of Using an Original Mercedes Component

The offered component comes from the Mercedes production line and is specifically designed for the W177 platform, which translates into a number of practical installation and operational benefits:

• factory mounting points for control arms, shock absorber, and braking system,
• preservation of original suspension geometry without the need for modifications,
• compatibility with factory sensors and rear axle hardware,
• material consistency with other drivetrain components.

This ensures predictable installation, and after wheel alignment, the vehicle regains handling parameters close to factory specifications, which is particularly important in modern designs with advanced safety systems.

Mounting Characteristics – Rear Axle, Left Side

The knuckle/hub is intended for installation on the rear axle on the left side, which is significant for both parts selection and service planning. In practice, this means:

• the need for compatibility with the appropriate trailing and transverse control arms,
• cooperation with the left rear axle brake caliper and disc,
• maintaining the correct position of the hub relative to the body and ABS/ESP system.

When replacing, it is recommended to perform a suspension geometry check to fully utilize the potential of the newly installed component and ensure even load distribution on both sides of the axle.

Part Condition and Application in Cost-Effective Repairs

The offered knuckle/hub is a used part, which significantly reduces repair costs compared to purchasing a new part while maintaining the original manufacturer's specifications. This type of solution is particularly beneficial for:

• rear axle post-accident repairs,
• mechanical damage after hitting a curb or obstacle,
• comprehensive suspension rebuilds in fleet vehicles.

More about the differences in the construction of sports and standard drivetrains, and the impact of suspension on car handling, can be found in the article: Audi RS vs. Other Models – What Lies Under the Hood and Chassis?, which helps to better understand the importance of precisely selected axle components.

Part Selection and Extended Repair Scope

When selecting a knuckle/hub for a Mercedes W177, it is worth paying attention to compatibility with the OEM part number and associated interchangeable numbers – this helps to avoid installation problems and ensures full compatibility with the specific vehicle equipment version. In the case of extensive rear axle repair, it is often worthwhile to simultaneously check the condition of the wheel bearing, mounting elements, and cooperating suspension components.

If you are planning a comprehensive repair or upgrade of the rear suspension area in your Mercedes and need other parts from the same group, such as knuckles, hubs, or axle mounts, check the available parts in the Other Mercedes category.