Mercedes W177 A 180 D Front Left N/S Suspension Leg Brake Disc Wheel Hub

Mercedes W177 A 180 D Front Left N/S Suspension Leg Brake Disc Wheel Hub is a complete, used module designed for the driver's side front axle. This part originates from the original Mercedes construction and provides a practical service solution for post-collision repairs, replacing damaged suspension, or restoring factory wheel alignment. By combining the suspension leg, brake disc, and wheel hub into a single assembly, installation time is reduced and the risk of incorrect assembly of individual components is minimized.

Specifications and technical data

• SKU: A1773208900
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1773208900
• Substitutable numbers: A1773208900, A 177 320 89 00, A2473320700, A 247 332 07 00, A2474213900, A 247 421 39 00, A2474210412, A 247 421 04 12
• Weight: 150
• Location on the vehicle: Front, Left
• Category: Suspension Component Replacement Kits

Purpose and function in the suspension system

The described set belongs to the Suspension replacement kits group and is dedicated to the front left axle of the Mercedes A-Class W177 generation with an A 180 d diesel engine. The assembly combines the functions of wheel guidance, vertical and lateral load transfer, and interaction with the braking system, ensuring stable vehicle handling, predictable cornering behavior, and proper operation of safety systems.

Placement on the driver's side allows for direct replacement of the damaged module without the need to interfere with other suspension elements on the opposite side, which is particularly important for post-accident repairs and component-specific replacement.

Set construction: suspension leg, brake disc, wheel hub

The set includes a suspension leg, a brake disc, and a wheel hub integrated with the steering knuckle mount. Combining these elements into one module:

• facilitates maintaining the correct front axle geometry after installation,
• limits the number of disassembly and assembly operations,
• reduces the risk of damaging cooperating parts during repair.

The presence of the brake disc and wheel hub in one assembly also promotes faster diagnostics of potential play, runout, or uneven wear, which directly affects braking comfort and steering precision. The structural integrity of the entire module is crucial when restoring factory suspension performance parameters in a Mercedes W177.

Benefits of using an original used module

Choosing an original, used suspension set for a Mercedes allows you to combine controlled repair costs with maintaining the performance characteristics intended by the manufacturer. Compared to aftermarket replacements of uncertain origin, such a module provides:

• factory mounting points and proper fitment to the body and other suspension system elements,
• compliance with factory geometry settings and suspension performance parameters,
• material consistency with other front axle components.

The used condition means that the part was previously in operation but is still suitable for further use after proper installation and potential workshop verification. For many users, this is a reasonable compromise between cost and functionality, especially for routine or post-accident repairs where quick restoration of vehicle efficiency is key.

Installation aspects and part selection

Before installation, it is recommended to verify the module's compatibility with the specific equipment version and vehicle year, as well as to check the condition of cooperating elements, such as wishbones, stabilizer links, or brake lines. Using a complete assembly with a leg, disc, and hub:

• simplifies the service process compared to replacing individual components,
• allows for reducing vehicle downtime in the workshop,
• facilitates subsequent wheel alignment and camber adjustment.

Due to the importance of this element for driving safety, installation should be performed professionally, using appropriate tightening torques and following a mandatory front axle geometry check.

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 legs, hubs, or discs, check the available parts in the Mercedes suspension replacement kits category.

More about the use of used components

Using used suspension and brake components is a popular way to reduce service costs without sacrificing the quality characteristic of German automotive engineering. It is worth learning good practices for selecting and installing such parts to maintain safety and driving comfort. A broader discussion of this topic, with examples of using used components in premium cars, can be found in the article Audi on second-hand parts – tuning and repairs without loss of quality, which shows how to effectively use dismantled components in everyday repairs and modifications.