BMW 3 Series F80N F80 LCI M3 Rear Left N/S Leg Suspension Axle Brake Disc Hub

BMW 3 Series F80N F80 LCI M3 Rear Left N/S Leg Suspension Axle Brake Disc Hub is an original suspension component designed for the rear left axle, specifically engineered for the demanding construction of the M3 F80. Thanks to its factory geometry and precise manufacturing, it provides a solid foundation for restoring proper suspension operation and stable vehicle handling. This is a solution for users who expect consistent vehicle behavior, predictable traction, and correct wheel alignment.

Specifications and technical data

• SKU: 8046261
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 8046261
• Substitutable numbers: 34218046261, 8046261, 33302284795, 2284795, 34208053265, 8053265, 34212284811, 2284811, 33322284533, 2284533
• Location on the vehicle: Rear, Left
• Category: Suspension Component Replacement Kits

Purpose and function in the suspension system

The rear left steering knuckle in the BMW 3 Series F80N F80 LCI M3 Rear Left N/S Leg Suspension Axle Brake Disc Hub is a key structural element responsible for wheel guidance, transferring loads from the control arms, and interacting with the braking and drive systems. A properly selected steering knuckle:

• ensures stable mounting of the hub and brake components,
• maintains the suspension geometry specified by the manufacturer,
• influences handling precision and predictable behavior of the rear axle,
• reduces uneven tire wear resulting from incorrect wheel alignment angles.

For the M3 F80 model, where the suspension system is tuned for dynamic driving, the correct choice of steering knuckle has a direct impact on safety and the repeatability of the car's reactions in corners.

Compatibility and mounting parameters

The presented steering knuckle belongs to the Suspension replacement kits group and is intended for installation on the rear left side. This means it has been structurally prepared to work with factory mounting points on the chassis, stock control arms, and brake system components intended for the BMW M3 F80.

Thanks to the use of an original BMW solution, it is possible to maintain factory reference points when setting toe and camber, which facilitates subsequent adjustment on an alignment rack. This is particularly important after accident repairs or when replacing multiple rear suspension components.

Characteristics of the used part

The steering knuckle comes from the used BMW parts group, which allows for economical repair while maintaining the original design. A component of this type, sourced from dismantling, is an attractive alternative to new parts, especially in the case of extensive rear axle repairs where several components are replaced simultaneously.

Choosing a used OEM steering knuckle is beneficial wherever maintaining factory specifications is important, while simultaneously optimizing service costs. In practice, this allows for the restoration of proper suspension operation without interfering with the manufacturer's design.

Application in service practice

BMW 3 Series F80N F80 LCI M3 Rear Left N/S Leg Suspension Axle Brake Disc Hub will prove effective both for standard replacement of a damaged element and for more extensive rear axle repairs following a collision or intensive track use. Installing an original steering knuckle facilitates:

• recreating factory mounting points for control arms and shock absorbers,
• correct seating of the hub and brake system components,
• achieving stable handling under high dynamic loads,
• maintaining the handling characteristics typical of the M3 F80.

For workshops specializing in the BMW brand, using an original steering knuckle is a convenient solution that reduces the risk of installation problems and speeds up the geometry setting process.

Technical support and selection of used suspension components

When planning a rear axle repair, it is worth analyzing which suspension components require replacement and whether it is more advantageous to use stock or sports parts. A detailed discussion of structural differences and practical tips on selecting used components can be found in the article: Stock vs. sports suspension – design differences and is it worth buying used suspension parts?.

If you are planning a comprehensive repair or upgrade of your BMW's suspension area and need other elements from the same group, such as control arms, springs, or shock absorbers, check out the available parts in the BMW suspension replacement kits category.