BMW 1 Series E81 130i N52N Rear Left N/S Suspension Leg Axle Brake Disc Hub Set

BMW 1 Series E81 130i N52N Rear Left N/S Suspension Leg Axle Brake Disc Hub Set is a complete, used service solution designed for the rear axle on the driver's side. Thanks to the original BMW design and the integration of several key components into a single module, the set allows for efficient, technically correct replacement of suspension and braking system components in one process.

Specifications and technical data

• SKU: 6774807-8
• 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 compatibility

The presented set has been designed specifically for the BMW 1 Series E81 130i with the N52N engine, which ensures proper geometry, appropriate stiffness, and correct cooperation with the factory chassis. The placement on the vehicle is the rear axle on the left side, making the component a perfect fit for the multi-link suspension design used in this model.

Its original BMW origin means that factory performance parameters, such as suspension kinematics, handling characteristics, and braking efficiency, are maintained without the need for modifications or adaptations.

Set construction and function of individual elements

The set includes a complete rear suspension leg with axle, wheel hub, and brake disc, which allows for the replacement of the entire module instead of individual components. This design:

• facilitates maintaining proper wheel alignment and vehicle stability,
• ensures consistency in the operation of the suspension and brakes on the left side,
• reduces the risk of assembly errors when putting together many separate parts.

The presence of the hub and brake disc in one assembly promotes even operation of the braking system on the rear axle, and replacing these elements simultaneously with the suspension leg helps restore predictable handling and stability during braking.

Service application and assembly benefits

The complete suspension replacement set for the rear left side is particularly useful in situations where mechanical damage has occurred (e.g., after a collision or hitting a curb) or due to advanced wear of several elements simultaneously. Using a single module instead of individual parts:

• simplifies the diagnostic process – you replace the entire assembly responsible for wheel guidance,
• shortens repair time in the workshop,
• helps restore consistent vehicle behavior in corners and during emergency braking.

A used, original BMW component is a reasonable compromise between cost and quality – you maintain the factory design and fitment, avoiding the problems typical of cheap replacements with uncertain specifications.

Condition, verification, and technical aspects

The set comes from dismantling and is offered as a used part, which in practice means that it has already been in service but retains functionality that allows for further use after proper installation. Such components are frequently chosen by workshops specializing in BMW, as they enable economical repair while maintaining the original rear axle design.

To ensure fitment, it is worth verifying the compatibility of the OEM part number and interchangeable numbers with the vehicle data before purchase – all this information can be found in the product technical specification section. This minimizes the risk of incompatibility and ensures the correct operation of the suspension and braking system on the left side.

Technical support and additional information

If you are considering a wider range of work on the rear axle, it is worth planning a simultaneous check of the components on the right side to maintain the symmetry of suspension and brake operation. In case of doubts regarding part selection, comparing the markings from the vehicle's rating plate and consulting with a mechanic specializing in the BMW brand may be helpful.

If you are planning a comprehensive repair or upgrade of the rear suspension area in your BMW and need other elements from the same group, such as additional legs, wishbones, or complete axle modules, check the available parts in the BMW suspension replacement sets category.

When making a decision about choosing used components, it is also worth knowing the broader context of the cost-effectiveness of using original parts from dismantling – a practical comparison with regeneration can be found in the article Manual gearbox failures – why an original used part is sometimes more reasonable than regeneration, which well illustrates the logic of choosing original sub-assemblies in other vehicle systems as well.