BMW 3 F30 F31 330d 330dX N57N 258 hp Rear Left N/S Suspension Leg Brake Caliper

BMW 3 F30 F31 330d 330dX N57N 258 hp Rear Left N/S Suspension Leg Brake Caliper is an original component designed for the rear axle on the driver's side. Thanks to its factory BMW design, it ensures precise vehicle handling and stable brake system performance in demanding road conditions. This is a solution for users who expect consistent suspension and brake operation without the need for modifications.

Specifications and technical data

• SKU: 6792523-4
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 6792523
• Substitutable numbers: 33326792523, 6792523, 34216850973, 6850973, 33207597689, 7597689, 34216864899, 6864899, 33207640261, 7640261, 34216792233, 6792233, BG
• Location on the vehicle: Rear, Left
• Category: Suspension Component Replacement Kits

Purpose and function in the BMW 3 F30/F31 chassis system

The presented item is a complete rear left suspension leg integrated with a brake caliper, dedicated to BMW 3 Series F30/F31 models in 330d and 330d xDrive versions with the 258 hp N57N engine. This assembly is responsible for stable wheel guidance, transferring loads from the body to the road, and effectively applying braking force to the disc.

Thanks to the factory geometry and fitment for the specific BMW platform, correct suspension kinematics are maintained, which translates into predictable vehicle behavior in corners, during braking, and under dynamic load changes.

Assembly construction: suspension leg and brake caliper

The BMW 3 F30 F31 330d 330dX N57N 258 hp Rear Left N/S Suspension Leg Brake Caliper combines elements responsible for wheel guidance and braking force generation in one construction. This configuration minimizes the risk of improper part fitment and facilitates installation in the vehicle.

• The suspension leg provides a rigid yet appropriately flexible connection between the wheel and the body.
• The brake caliper is responsible for evenly pressing the pads against the disc, which contributes to stable and repeatable braking.
• Factory mounting points guarantee compliance with the original geometry of the BMW 3 F30/F31 rear axle.

Combining these elements into one assembly is particularly beneficial for post-accident repairs or comprehensive component replacement on the rear left side, where technical consistency and quick installation are key.

Benefits of using an original BMW suspension assembly

Using an original suspension assembly with a brake caliper in a BMW 3 F30/F31 brings a number of practical benefits in daily operation:

• Factory fitment – maintaining the correct wheel position, proper alignment, and predictable vehicle behavior at various speeds.
• Consistent suspension and brake operation – components designed as a whole work together without the need for adaptation.
• Stability under the high torque of the N57N engine – construction adapted to the loads generated by the 330d/330dX unit.
• Reduced risk of improper installation – a ready-to-install assembly facilitates service work and shortens repair time.

For users who value confident handling and predictable braking in powerful BMW 3 Series versions, this suspension assembly is a practical and safe service solution.

Application in the suspension system and service tips

The element is intended for installation on the rear left axle, in accordance with the factory BMW 3 F30/F31 suspension layout. When replacing, it is recommended to:

• check the condition of other rear suspension components on the same side,
• verify wheel alignment after installation,
• verify the condition of the brake disc and pads working with the caliper.

Thanks to this, the entire chassis system will maintain consistent performance parameters, and the vehicle will respond to driver maneuvers in a predictable and repeatable manner.

Used condition and advantages of an original BMW part

The offered suspension assembly comes from the group of original BMW parts and is available in used condition. For many users, this is a reasonable compromise between repair costs and maintaining factory quality and fitment. The original construction ensures compatibility with the vehicle's factory systems, without the need for modifications or additional adapters.

If you want to better understand how to take care of the suspension system in premium cars and what the importance of individual components is, it is worth checking out our guide: Suspension system – a comprehensive guide to shock absorbers, control arms, and stabilizers.

For drivers considering the choice between an original part and a replacement when repairing the rear suspension, the following practical material may also be helpful: 5 reasons why a used OEM part is a better choice than a replacement.

Complementary elements from the BMW suspension group

If you are planning a comprehensive repair or upgrade of the suspension zone in your BMW and need other elements from the same group, such as additional legs, mounting elements, or related rear axle components, check out the available parts in the category BMW suspension replacement kits.