BMW E90 325i N52 Front Left N/S Leg Suspension Axle Brake Disc Hub Set

BMW E90 325i N52 Front Left N/S Leg Suspension Axle Brake Disc Hub Set is a complete front suspension component designed for the driver's side front axle of the BMW 3 Series E90 325i model with the N52 engine. The set combines the functions of wheel guidance and vibration damping, ensuring stable handling and predictable vehicle behavior. By using an original BMW solution from the Suspension replacement kits category, the correct geometry and suspension operating characteristics are maintained.

Specifications and technical data

• SKU: 6771177-1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 6771177-1
• Substitutable numbers: 31316786001, 6786001, 31314036119, 31306771177, 31316767323, 6767323, 6771177, 4036119, 34116854998, 6854998, 34116764643, 34116772669, 6772669, 6764643, 31216793923, 6793923, 34116769091, 6769091, 31216764443, 6764443
• Weight: 150
• Location on the vehicle: Front, Left
• Category: Suspension Component Replacement Kits

Purpose and function in the BMW E90 325i suspension

The presented component is designed to work on the front left side of the vehicle, where it is responsible for guiding the wheel hub, interacting with the braking system, and damping road surface irregularities. Integrating the shock absorber with the steering knuckle allows for the retention of factory mounting points, which facilitates installation and reduces the risk of errors during wheel alignment.

A sub-assembly configured in this way is crucial for:

• maintaining the correct front axle geometry,
• driving stability at higher speeds,
• even tire wear,
• effective cooperation with the braking and steering systems.

Benefits of using a complete suspension set

Choosing a complete solution, such as a shock absorber with steering knuckle, reduces the number of workshop operations and minimizes the risk of damage during the disassembly of individual parts. The mechanic receives a ready-to-install sub-assembly, which translates into shorter repair times and greater consistency of the service result.

The most important advantages of this solution include:

• retaining factory mounting points and suspension operating angles,
• easier diagnostics of potential play and knocks in the front axle,
• consistent operating characteristics of the shock absorber and steering knuckle,
• reducing the need for additional adjustments beyond standard geometry alignment.

Technical characteristics and fitment

The element comes from the BMW line, which means compliance with the manufacturer's factory construction standards. The design solutions used are adapted to the weight and load distribution in the BMW E90 325i with the N52 unit, thanks to which the suspension maintains the stiffness and ride comfort intended by the manufacturer.

The sub-assembly has an assigned OEM part number and a set of interchangeable numbers, which facilitates clear identification in catalogs and comparison with the part currently installed in the vehicle. The product also has a specific weight, which is important when choosing the method of transport and organizing installation in workshop conditions.

Condition, origin, and service application

The offered shock absorber with steering knuckle is a used part, sourced from dismantling, which is a cost-effective solution while maintaining the original BMW specification. This type of part is particularly recommended in situations where there has been mechanical damage to the steering knuckle (e.g., after hitting a curb or a collision) and when there is a simultaneous need to replace the shock absorber.

In workshop practice, such a set is effective for:

• post-accident front axle repairs,
• damage to steering knuckle mounts or bearing seats,
• excessive wear or leakage of the shock absorber,
• comprehensive suspension regeneration in the BMW E90 325i.

Installation and operational recommendations

Before installation, it is recommended to carefully compare the geometry and mounting points with the part removed from the vehicle and verify compliance with the OEM part number and interchangeable numbers in the BMW catalog. After installation, it is necessary to set the front axle geometry to fully utilize the potential of the newly installed sub-assembly and ensure even tire wear.

To extend the trouble-free operation of the suspension and other dismantled parts, it is worth familiarizing yourself with practical tips regarding maintenance and operation – detailed advice can be found in the article How to extend the life of used car parts?.

If you are planning a comprehensive repair or upgrade of the front suspension area in your BMW and need other elements from the same group, such as shock absorbers, wishbones, or steering knuckles, check the available parts in the BMW suspension replacement kits category.