BMW E81 E87 E87N E90 Rear Axle Suspension Arm Wishbone 6777980

The BMW E81 E87 E87N E90 Rear Trailing Arm 6777980 is an original suspension component designed for the rear axle of selected BMW 1 and 3 Series models. Thanks to its factory geometry and precise fit to the suspension design, it ensures stable handling, predictable vehicle behavior, and proper interaction with other rear suspension components. This is a practical solution for collision repairs, suspension overhauls, or restoring factory settings.

Specifications and technical data

• SKU: 6777980
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 6777980
• Substitutable numbers: 33326777980, 6777980, 33326763473, 6763473, 33322406292, 2406292, 51127033714, 7033714
• Location on the vehicle: Rear
• Category: Other Interior Parts & Accessories

Purpose and Function in BMW Suspension

The rear trailing arm is responsible for maintaining correct wheel geometry and controlling the movement of the axle carrier and hub relative to the body. In BMW E81, E87, E87N, and E90 models, this component is part of the multi-link rear axle system, influencing:

• cornering precision,
• stability during braking and acceleration,
• even tire wear,
• correct toe and camber alignment.

By using the original design, the control arm maintains the parameters intended by BMW engineers, which is particularly important for cars with a stiffer, more dynamic suspension setup.

Compatibility and Interchangeable Numbers

The presented control arm is an OEM BMW part with an assigned part number and a set of interchangeable numbers. This means it may appear in service documentation or parts catalogs under different designations, but structurally corresponds to the same rear suspension component.

Before purchasing, it is advisable to compare the designations with your existing part or vehicle documentation. This facilitates selecting the correct control arm for a specific body version and engine within the E81/E87/E87N/E90 series, and also minimizes the risk of installation errors.

Vehicle Placement and Installation Aspects

The control arm is designed for installation on the vehicle's rear axle, positioned transversely to the direction of travel. Its design works in conjunction with other multi-link suspension elements, such as the hub, knuckle, spring, and shock absorber, forming a cohesive support system.

When replacing, it is recommended to:

• inspect other rear suspension components for play and corrosion,
• use appropriate torque values in accordance with BMW service documentation,
• perform a wheel alignment after installation to fully utilize the properties of the newly fitted control arm.

This approach helps restore consistent, predictable rear axle behavior and reduce excessive wear on tires and rubber-metal components.

Product Characteristics and Condition

The offered control arm is an original BMW component, ensuring dimensional accuracy with the factory suspension and a correct fit to the mounting points on the body and knuckle. The item is classified as used, meaning it has been removed from a vehicle and is intended for reinstallation after inspection of its condition by the buyer or a workshop.

Choosing an original, used control arm is often a sensible alternative to aftermarket parts of unknown origin, especially in cars where maintaining the original handling characteristics and suspension performance is crucial.

Other Category Items and Technical Knowledge

If you are looking for other items in the Other category dedicated to this brand, check out our offer at BMW Other Parts, where you will find a wide selection of components for various 1 Series, 3 Series, and other model lines.

For drivers interested in a deeper understanding of the differences in suspension, braking, and drivetrain construction in high-performance cars, we recommend an article comparing RS sport versions with standard models: Audi RS vs. Other Models – What Lies Under the Hood and Chassis?. This provides valuable knowledge on how appropriately selected components influence a car's road behavior.