Mercedes SLK Roadster R172 Rear Axle Wheel Carrier Right O/S Knuckle A1723502008

Mercedes SLK Roadster R172 Rear Axle Wheel Carrier Right O/S Knuckle is an original chassis component designed for installation on the rear right axle of the SLK R172 model. Thanks to its factory geometry and robust construction, the knuckle ensures stable handling, precise wheel alignment, and safe integration with other suspension components.

Specifications and technical data

• SKU: A1723502008
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1723502008
• Substitutable numbers: A1723502008, A 172 350 20 08
• Location on the vehicle: Rear, Right
• Category: Other Steering & Suspension Parts

Purpose and function in the suspension

The rear right knuckle in the Mercedes SLK R172 is a key component that connects the wheel hub, control arms, and the braking and steering system elements. It is responsible for:

• maintaining proper wheel geometry in the vertical and horizontal axes,
• stable transfer of loads from the road surface to the chassis,
• correct positioning of the hub, bearing, and suspension mounts,
• maintaining predictable vehicle behavior during acceleration, braking, and cornering.

A properly selected rear right knuckle helps maintain factory driving characteristics, which is particularly important in a dynamic roadster like the SLK R172.

Compatibility and fitment for Mercedes SLK R172

The offered knuckle has been designed specifically for the rear suspension construction of the Mercedes SLK R172 generation. This means:

• factory mounting points for control arms and other suspension elements,
• compatibility with the original rear axle geometry,
• the ability to be used as a replacement for a worn or damaged part without the need for structural modifications.

Such fitment facilitates service work and helps reduce vehicle downtime, while also promoting the consistency of the entire chassis system.

Characteristics of the used part

The knuckle comes from a Mercedes brand vehicle and is offered as a used part. Such components are often chosen for suspension repairs because:

• they provide factory construction and material quality consistent with the manufacturer's design,
• they allow for a favorable cost-to-quality ratio,
• they can be an economical alternative to new parts while maintaining correct operating parameters.

Before installation, a standard workshop inspection and rear axle alignment are recommended to fully utilize the potential of the suspension system.

Benefits of replacing the rear right knuckle

Replacing a worn or damaged knuckle with a functional part allows for the restoration of proper vehicle road behavior. The most important benefits include:

• improved driving stability at higher speeds,
• more even tire wear due to maintained proper alignment,
• better cooperation with shock absorbers, springs, and the braking system,
• increased sense of vehicle control during dynamic driving.

For a car with a sporty character like the SLK Roadster, the proper condition of the knuckle has a direct impact on handling precision and driving comfort.

Expanding knowledge and selecting parts

If you are interested in how manufacturers design sports chassis systems and how solutions used in higher-performance versions differ, it is worth reading an article comparing suspension and drivetrain designs in high-power cars – you can find it here: Audi RS vs other models – what is hidden under the hood and chassis?.

Related Mercedes suspension components

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