BMW X3 Series E83 2.0d N47 Rear Right O/S Suspension Leg Arm Brake Disc

BMW E83 X3 2.0d N47 Suspension Knuckle Control Arm is a set of rear suspension components designed for the right side, specifically for BMW X3 E83 models with the N47 engine. The kit ensures consistent geometric alignment, which translates to stable handling, predictable vehicle behavior, and proper interaction with the braking system. By utilizing original BMW solutions, this suspension replacement kit allows for a technically correct repair without compromising safety.

Specifications and technical data

• SKU: 3420502-2
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 3420502
• Substitutable numbers: 33303420502, 3420502, 34216765884, 6765884, 33207524042, 7524042, 33217529918, 7529918, 34213332217, 3332217, 33303413256, 3413256, 33303405878, 3405878, 34216750162, 6750162
• Location on the vehicle: Rear, Right
• Category: Suspension Component Replacement Kits

Purpose and Function in the Suspension System

The presented set includes key components responsible for guiding the rear wheel on the right side. The knuckle serves as the base for mounting the hub, brake components, and sensors, while the control arm is responsible for maintaining correct suspension geometry under dynamic and static loads. This combination of elements allows for:

• maintaining correct toe and camber of the rear wheel,
• stable transfer of longitudinal and lateral forces during acceleration and braking,
• maintaining predictable traction on uneven surfaces and in corners.

Thanks to this, the BMW X3 E83 right rear suspension regains its factory operating parameters after repair, which directly impacts driving comfort and the effectiveness of safety systems.

Compatibility and Replacement Numbers

The components included in the set have been developed for seamless integration with the factory BMW suspension system. The part has a dedicated OEM number and a set of replacement numbers, which facilitates unambiguous identification when selecting for a specific equipment version and vehicle year. The presence of multiple reference numbers allows the same component to be used in various model variants while maintaining full dimensional and assembly compatibility.

For the user, this means the possibility of a technically correct replacement of worn or damaged components without the need for suspension structure modifications, and for the workshop, faster verification of part compatibility with the vehicle based on BMW catalogs.

Assembly and Operational Characteristics

The set is prepared as a solution for installation in place of factory components, maintaining the original mounting points on the body and axle. The placement on the vehicle is limited to the right rear side, which minimizes the risk of assembly errors and simplifies service planning.

• design intended for use with standard BMW springs and shock absorbers,
• maintenance of factory geometry after proper wheel alignment,
• possibility of integration with standard sensors and brake system accessories.

After installation, it is recommended to perform a suspension geometry measurement and adjustment to fully utilize the kit's potential and ensure even tire wear.

Condition and Benefits of Using a Used Part

The offered component comes from the group of used BMW parts, which significantly reduces repair costs while maintaining original construction and fit. Compared to aftermarket parts of unknown origin, using a component that matches the factory specification reduces the risk of geometry problems, improper fit, or accelerated tire wear.

This solution is particularly beneficial for comprehensive suspension repairs where both economic aspects and the maintenance of the characteristic handling of the BMW X3 E83 are important.

If you are planning a comprehensive repair or upgrade of the rear suspension area in your BMW and need other elements from the same group, such as additional control arms, knuckles, or complete mounting modules, check the available parts in the BMW Suspension Replacement Kits category.

Technical Support and Part Selection

When planning suspension repairs, it is advisable to consider the condition of other components on the rear axle to avoid the need for further intervention in a short period. It may be helpful to familiarize yourself with practical tips on the operation and selection of premium used components – this is discussed in more detail in the article Used Mercedes Parts – Original Dismantled Parts, which presents the advantages of using original dismantled parts in premium segment cars.

If you want to better understand the role of control arms and knuckles in the operation of the entire drivetrain, the technical guide Suspension System – A Comprehensive Guide to Shock Absorbers, Control Arms, and Stabilizers, which describes the relationships between individual suspension elements in popular car models, may also be useful.