BMW F30 320i N20 B48 Rear Left N/S Suspension Leg Brake Caliper Disc

BMW F30 320i N20 B48 Rear Left N/S Suspension Leg Brake Caliper Disc is a complete, used set of rear suspension and braking system components for the left side, designed for BMW 3 Series F30 models with N20 and B48 engines. This solution allows for a consistent replacement of key components in one go, ensuring technically correct geometry and stable operation of the braking system. By maintaining the manufacturer's specifications, this suspension replacement kit facilitates the restoration of proper vehicle handling and effective braking.

Specifications and technical data

• SKU: 6792521-4
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 6792521
• Substitutable numbers: 33326792521, 6792521, 34216850857, 6850857, 33207609351, 7609351, 34216792227, 6792227
• Location on the vehicle: Rear, Left
• Category: Suspension Component Replacement Kits

Purpose and vehicle placement

The presented set includes components operating in the rear suspension area on the left side, integrated with the braking system. The placement on the vehicle is clearly defined as rear – left side, which facilitates the selection of parts for post-collision repairs, replacement of worn elements, or restoring the factory handling characteristics of the BMW F30 320i.

A set configured in this way is particularly useful for work where simultaneous intervention in the suspension and brakes is necessary – this minimizes the risk of mismatching individual components and speeds up the service process.

Technical characteristics of the set

The set belongs to the Suspension replacement kits group, which means it brings together elements responsible for both transferring loads from the body to the wheel and for vehicle stability during braking. It includes, among others, the suspension leg, caliper, and brake disc, which allows for comprehensive service of the left side of the rear axle in a single assembly process.

Such a combination of elements in one product promotes technical consistency – suspension geometry, caliper position relative to the disc, and cooperation with other axle components are in line with BMW's design assumptions for the F30 320i series with N20 and B48 units.

Benefits of using an original BMW set

The original origin of BMW components translates into a precise fit to the body, hub, and braking system of a given model. Thanks to this:

• the correct geometry of the rear axle is maintained,
• the risk of improper tire wear is reduced,
• the braking system operates in a predictable manner, according to the manufacturer's assumptions,
• assembly proceeds more efficiently, without the need for component modifications.

A used, original suspension and brake set often represents a cost-effective solution compared to replacements, while maintaining a design consistent with the factory project. This is particularly important in cars such as the BMW F30 320i, where precision of handling and stability during braking are key to driving comfort and safety.

Condition, verification, and fitment

The product is offered as a used suspension replacement kit, which means it comes from dismantling and has been verified for suitability for further use. This type of solution allows for an economical repair while maintaining the original BMW design, without the need to reach for random, unverified replacements.

Before purchasing, it is worth comparing the suspension and brake configuration in your BMW F30 320i with the offered set, paying attention to the engine version (N20 or B48) and the assembly side. Proper fitment translates into stable handling, even braking, and the absence of unwanted vibrations or noises while driving.

Operation and longer service life of used parts

To maximize the potential of a used suspension and brake set, it is worth ensuring proper installation, checking tightening torques, and subsequent regular inspection of friction and fastening elements. Good practice also includes periodic cleaning of the area around the caliper and disc, which reduces corrosion and improves the system's operating culture.

If you want to learn practical ways to keep suspension and brake components from dismantling in good condition, check out the guide How to extend the life of used car parts?, which describes proven maintenance and operation methods.

Expanding the scope of repair within the BMW suspension

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 suspension legs, control arms, or related mounting components, check the available parts in the BMW suspension replacement kits category.