BMW 1 Series E87 130i N52 Rear Left N/S Suspension Leg Axle Brake Disc Hub Set

BMW 1 Series E87 130i N52 Rear Left N/S Suspension Leg Axle Brake Disc Hub Set is a factory-spec suspension component designed for the rear left side of the BMW 1 Series E87 with the N52 engine. The original design ensures proper wheel geometry, stable handling, and predictable vehicle behavior in corners. This is a solution for users looking for a proven, compatible, and technically matched component instead of random aftermarket replacements.

Specifications and technical data

• SKU: 6774807-20
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 6774807
• Substitutable numbers: 33326774807, 6774807, 34216768697, 6768697, 33207580945, 7580945, 34216864901, 6864901, 33326757735, 6757735, 33217553559, 7553559, 34216855008, 6855008, 34216764653, 6764653, 33217527027, 7527027
• Location on the vehicle: Rear, Left
• Category: Suspension Component Replacement Kits

Purpose and function in the suspension system

The steering knuckle with axle shaft for the rear left side is responsible for precise wheel guidance, transferring loads from the body to the road, and proper interaction with other multi-link suspension components. In the BMW E87 130i N52, this component is crucial for:

• maintaining proper wheel alignment and camber,
• vehicle stability at higher speeds,
• even tire wear,
• proper operation of the drivetrain on the rear axle.

By maintaining factory mounting points and geometry, installing this steering knuckle with axle shaft allows you to restore the vehicle's original handling characteristics after a collision, mechanical damage, or wear and tear.

Benefits of using an original BMW component

Using an original component in a BMW 1 Series translates into a number of practical advantages. The design is prepared for direct integration with the factory suspension, which facilitates installation and reduces the risk of fitment issues. For the user, this means:

• secure fitment with control arms, hub, and braking system,
• maintenance of the stiffness and durability designed by the manufacturer,
• lower risk of incorrect geometry after alignment,
• compatibility with factory safety systems.

This is particularly important in the 130i N52 version, where the power of the engine requires stable and predictable behavior of the rear axle.

Vehicle placement and installation aspects

The presented item is designed for the rear left side of the vehicle, which eliminates any doubts regarding proper application. Clearly defined placement on the vehicle facilitates part selection for accident repairs or one-sided replacement when only one corner of the suspension has been damaged.

In workshop practice, the steering knuckle with axle shaft is installed in place of the factory element, using stock mounting points. After installation, it is recommended to perform a wheel alignment to fully utilize the potential of the design and ensure even handling of both rear wheels.

Condition and use in a professional workshop

The item comes from the Suspension Replacement Kits group, which means it is dedicated to comprehensive work on the chassis – especially where it is necessary to replace several related components at once. A used original component is a reasonable choice in situations where the cost-to-quality ratio and maintaining factory performance parameters are important.

For BMW owners and workshops specializing in the brand, this is a practical solution for repairs after mechanical damage, rear axle regeneration, or restoring a car to full efficiency after a collision.

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

Why choose original used components?

In the case of key chassis elements, such as the steering knuckle with axle shaft, choosing an original used component often proves more predictable than cheaper replacements with uncertain parameters. A factory part retains the operating characteristics designed by the manufacturer, which has a direct impact on safety and driving comfort.

If you are interested in the broader context of using original used drivetrain components and want to better understand when such a choice is technically justified, it is worth reading an article discussing manual transmissions – you will find practical arguments there that can also be applied to other key vehicle elements: Manual transmission failures in cars – why an original used part is a more reasonable choice than regeneration?.