Mercedes W447 Rear Left N/S Suspension Leg Wheel Hub Mount Holder A4473505300

The Mercedes W447 Rear Left Wheel Hub Knuckle is a factory original suspension component designed for the rear axle, driver's side, in Mercedes W447 models. Its original design ensures precise wheel guidance, stable suspension geometry, and predictable vehicle behavior during daily use. This is a practical solution for users who want to restore proper suspension function while maintaining compliance with factory standards.

Specifications and technical data

• SKU: A4473505300-1
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A4473505300
• Substitutable numbers: A4473505300, A 447 350 53 00
• Weight: 150
• Location on the vehicle: Rear, Left
• Category: Suspension Component Replacement Kits

Purpose and Function in Suspension

The rear wheel hub knuckle in a Mercedes W447 is a key element connecting the wheel to the suspension and braking system. It is responsible for:

• maintaining the correct wheel position relative to the body,
• stable mounting of the bearing and hub,
• transferring loads from the road surface to suspension components,
• preserving the correct rear axle geometry.

Thanks to its factory design, the knuckle works with standard drivetrain components, which facilitates installation and allows for predictable vehicle handling.

Construction and Rear Axle Fitment

The presented component is designed for the rear left side of the vehicle, eliminating the risk of errors when selecting parts for a specific position on the car. The integrated hub provides a stable base for the wheel bearing and the brake disc or drum, depending on the specific configuration of the vehicle.

The solution based on the original Mercedes design ensures:

• correct mounting points for control arms and shock absorber,
• compliance with factory geometry settings,
• compatibility with the standard braking system and mounting elements.

Application in the Suspension Replacement Kits Category

The rear wheel hub knuckle falls into the Suspension Replacement Kits category, as it is often replaced along with other drivetrain components due to mechanical damage or wear. Installing such a component is particularly advisable for:

• repairs after collisions and impacts to the rear of the vehicle,
• excessive wear of mounting points or bearing seats,
• modernization and comprehensive overhaul of the rear axle suspension.

Choosing an original knuckle helps reduce the risk of alignment issues, uneven tire wear, or unwanted vibrations during driving.

Characteristics of a Used Component

The offered component is a used part from disassembly, representing a favorable compromise between repair cost and maintaining factory quality. This type of part is particularly attractive to users who:

• seek original design solutions at a reasonable price,
• want to avoid the uncertain quality of aftermarket parts of unknown origin,
• prioritize compliance with the vehicle manufacturer's design.

To maximize the potential of such a component, it is advisable to ensure proper installation and inspection of cooperating suspension and braking system elements.

Operation and Care of Suspension Components

When installing the hub knuckle, it is recommended to verify the condition of the bearing, control arms, bushings, and shock absorber mounts to avoid the need for further intervention in the system in a short period. Regular geometry checks after replacing suspension components help maintain driving stability and even tire wear.

If you want to better care for the durability of parts from disassembly, including suspension and drivetrain components, familiarize yourself with the practical tips in the article How to Extend the Lifespan of Used Car Parts?.

If you are planning a comprehensive overhaul of the rear axle on your Mercedes and are also interested in other drivetrain-related components for this brand, check out the available parts in the Mercedes Suspension Replacement Kits category.