BMW Z4 E89 23i Roadster Rear Left N/S Suspension Leg Trailing Arm Axle

Rear left trailing suspension arms for BMW Z4 E89 23i Roadster are factory original drivetrain components, designed for precise operation on the driver's side rear axle. The offered set from the Suspension Replacement Kits group ensures proper geometry, body stability, and predictable handling characteristic of BMW.

Specifications and technical data

• SKU: 6783105-2
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 6783105
• Substitutable numbers: 33326783105, 6783105, 34206786057, 6786057, 33207588783, 7588783, 34216782605, 6782605
• Location on the vehicle: Rear, Left
• Category: Suspension Component Replacement Kits

Purpose and Fitment for BMW Z4 E89 23i Roadster

The presented suspension element has been specifically designed for the left rear axle of the BMW Z4 E89 23i Roadster model. It is responsible for guiding the wheel in the longitudinal plane, transferring loads from the body to the hub, and maintaining a stable wheel position relative to the body during acceleration, braking, and over uneven surfaces.

Thanks to its construction in accordance with factory BMW standards, the proper suspension operating characteristics are maintained, which translates into confident handling, predictable steering responses, and correct cooperation with the traction control and stability control systems.

Construction and Function of the Suspension Element

The rear left trailing arm performs several key functions in the drivetrain:

• guides the wheel in the longitudinal axis, limiting unwanted movements under load changes,
• stabilizes the hub's position relative to the body, which affects wheel geometry,
• transfers forces resulting from braking and acceleration to the body structure,
• cooperates with other suspension elements, forming a cohesive system responsible for driving comfort and precision.

Selecting the correct element with the appropriate placement on the vehicle (rear, left side) is crucial for maintaining proper geometry and even tire wear.

Benefits of Using an Original BMW Component

Using an original BMW component in the rear suspension area allows for the preservation of the vehicle's factory handling parameters. Appropriate stiffness, geometry, and mounting points translate into:

• stable vehicle behavior at higher speeds,
• better vehicle control in corners,
• correct cooperation with the stock springs and shock absorbers,
• reduced risk of incorrect toe and camber settings.

This solution is particularly important in sports-oriented cars like the BMW Z4 E89 23i Roadster, where handling precision and repeatable suspension responses directly impact safety and driving pleasure.

Usage Characteristics and Part Condition

The offered element comes from a BMW vehicle and is classified as a used part. This means it has undergone some use but retains functionality allowing for further use after proper installation and potential inspection at a workshop. For suspension components, it is particularly important to check cooperating elements such as bushings, mounting bolts, or other arms to ensure the entire system works cohesively.

To maintain full drivetrain functionality, installation in a specialized service center is recommended, followed by a check and adjustment of the rear axle wheel alignment.

Selecting Used Suspension Components – Practical Knowledge

When choosing used suspension components, it is worth paying attention to their origin, compatibility with the specific engine and body version, and whether they precisely match the mounting side on the vehicle. This element is designed for the rear left side, which is important for geometry and load distribution.

If you want to deepen your knowledge about the differences between stock and sport suspension and make informed decisions when buying used parts, read the article: Stock vs. Sport Suspension – Construction Differences and Selection of Used Parts.

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