BMW 1 Series E87 120i N46 Front Right O/S Spring Strut Brake Suspension Axle Leg

Front Right Shock Absorber with Spring and Strut Assembly for BMW 1 Series E87 120i is a complete front axle suspension component, designed for the driver's side, on the right outer side. As part of the Suspension Replacement Kits group, it ensures consistent operation of the shock absorber, spring, wheel hub, and brake system components, which translates to stable handling and predictable vehicle behavior.

Specifications and technical data

• SKU: 6771554-9
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 6771554
• Substitutable numbers: 31316786018, 6786018, 31216793924, 6793924, 34116774682, 6774682, 34116854997, 6854997, 31316771554, 6771554, 31216764444, 6764444, 34116773022, 6773022, 34116768186, 6768186, 34116764641, 6764641, BG
• Location on the vehicle: Front, Right
• Category: Suspension Component Replacement Kits

Purpose and Function in BMW 1 Series E87 120i Suspension

The offered component is a complete front suspension strut assembly for the right side, including the shock absorber unit, spring, and strut leg with mounting for the wheel hub and brake caliper. This configuration is crucial for maintaining proper front axle geometry, correct wheel guidance, and stability during braking and when encountering uneven surfaces.

The strut assembly operates within the McPherson system, typical for the BMW 1 Series E87, responsible for:

• damping vibrations and impacts transmitted from the road surface to the body,
• maintaining the correct height and stiffness of the vehicle's front end,
• stable vertical and lateral wheel guidance,
• secure mounting of the brake system components on the right side.

Complete Assembly for the Front Axle – Installation Advantages

The suspension strut assembly in this configuration allows for the replacement of the entire right-side unit without the need to select individual components. For the user, this means:

• consistent operation of the shock absorber and spring in a single unit,
• easier maintenance of correct front axle geometry after installation,
• reduced risk of mismatch between individual components,
• more predictable vehicle behavior during braking and cornering.

Thanks to this solution, upgrading or repairing the front suspension on a BMW 1 Series E87 120i is organizationally and technically simpler, especially when replacing after a collision or significant wear and tear.

Fitment for BMW and OEM Number Compatibility

The component has been designed as part of the original BMW suspension construction, ensuring proper fitment with the body, steering knuckle, and other front axle components. The use of the OEM part number and associated cross-reference numbers allows for precise identification and selection for a specific BMW 1 Series E87 120i version.

In practice, this means that with correct selection by OEM number or reference numbers, the strut assembly will work with factory control arms, bearings, wheel hub, and brake system, maintaining the parameters specified by the vehicle manufacturer.

Used Condition and Operation

The offered suspension assembly is in used condition, allowing for an economical repair while maintaining the original BMW construction. Before installation, a standard inspection of working parts is recommended, such as rubber components, the upper mount bearing, and surfaces interacting with the brake system. After installation, a front axle geometry measurement and adjustment should be performed.

To maximize the potential of this part, regular suspension checks, play inspections, and observation of symptoms such as knocking, vehicle pulling, or uneven tire wear are advisable. A properly maintained suspension strut assembly significantly contributes to driving safety and comfort.

Caring for Used Suspension Components

When installing a used suspension assembly, proper preparation and subsequent operation are crucial. It is worth paying attention to:

• correct tightening torque of mounting bolts according to service documentation,
• checking the condition of dust boots and rubber components during periodic inspections,
• avoiding prolonged driving at high speeds over extremely damaged surfaces.

More practical tips on the operation and maintenance of salvaged parts can be found in the article How to Extend the Lifespan of Used Car Parts?, which discusses, among other things, best practices for suspension and other components.

BMW Suspension Expansion and Modernization

If you are planning a comprehensive repair or modernization of the front suspension area on your BMW and need other parts from the same group, such as additional struts, springs, or complete suspension legs, check the available parts in the BMW Suspension Replacement Kits category.