BMW 1 Series E87 LCI 120d N47 Rear Right O/S Suspension Leg Axle Brake Disc

BMW 1 Series E87 LCI 120d N47 Rear Right O/S Suspension Leg Axle Brake Disc is an original suspension component designed for the rear right side of the vehicle, specifically engineered for BMW 1 Series E87 models with the N47 engine. This solution allows for precise restoration of suspension geometry, ensuring stable handling, predictable vehicle behavior, and safe operation of the chassis. Thanks to its factory design, the component works perfectly with standard rear suspension parts, which facilitates installation and reduces the risk of fitment issues.

Specifications and technical data

• SKU: 6774810-11
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 6774810
• Substitutable numbers: 33326774810, 6774810, 34216768694, 6768694, 33217547076, 7547076, 33217533446, 7533446, 33326774806, 6774806, 33326757080, 6757080, 33326761582, 6761582, 34216855007, 6855007, 34216764651, 6764651
• Location on the vehicle: Rear, Right
• Category: Other Steering & Suspension Parts

Purpose and function in the suspension system

The steering knuckle integrated with the control arm, also referred to as the suspension leg, is responsible for a rigid yet controlled connection between the wheel hub and the body. In the case of this model, it is a component dedicated to the rear right side, which is crucial for maintaining the correct geometry of the drive axle in the BMW E87 120d N47.

A correctly selected and installed suspension leg:

• stabilizes the wheel position relative to the body during acceleration, braking, and cornering,
• enables precise adjustment of toe and camber angles,
• reduces unwanted play that can lead to vibrations, vehicle pulling, or uneven tire wear,
• works with other rear suspension components to ensure consistent, predictable handling.

Benefits of using the original steering knuckle with control arm

Choosing the original suspension leg for the BMW E87 120d N47 primarily ensures a perfect fit for the specific body version and drivetrain. The component has been designed to withstand the loads characteristic of this model, allowing it to maintain appropriate rigidity and durability during long-term use.

Key advantages include:

• preservation of the factory handling characteristics typical of the BMW 1 Series,
• compatibility with standard mounts, bushings, and other rear suspension components,
• the ability to restore correct geometry after a collision, mechanical damage, or component wear,
• reduction of installation issues typical of aftermarket parts with imprecise dimensions.

Vehicle placement and installation aspects

The presented steering knuckle with control arm is intended exclusively for the right side of the rear axle. Correct identification of the installation side is important not only for safety but also for proper interaction with other suspension and braking system components.

When planning a replacement, it is worth paying attention to:

• the condition of other rear suspension components (bushings, links, springs, shock absorbers),
• the necessity of performing a wheel alignment after installation,
• selecting parts compatible with the specific engine and body version of the BMW E87.

The product comes from the BMW group, which in practice means maintaining factory mounting points and compliance with the rear axle design in the 120d N47 version.

Use in service and post-accident repairs

The rear right steering knuckle with control arm is often replaced after damage resulting from collisions, hitting a curb, or long-term operation in difficult conditions. In such situations, using an original component allows for restoring full suspension functionality without compromising safety.

This type of component is particularly important in higher-power cars, such as the BMW 120d, where the loads transferred through the rear axle are significantly higher than in lower-power engine versions. A properly selected suspension leg helps maintain vehicle stability during dynamic driving, as well as during heavy braking.

System expansion and additional technical materials

If you are planning a comprehensive repair or upgrade of the chassis area in your BMW and need other elements from the same group, such as additional control arms, mounts, or brackets, check out the available parts in the Other BMW category.

For a comparison of the characteristics of sports drivetrains and suspensions with solutions used in standard cars, a comparative material regarding high-performance models may be helpful – you can find it in the article Audi RS vs other models – what is hidden under the hood and chassis?, which discusses the differences in engine, brake, and chassis construction.