BMW 3 Series E90 320d N47 Rear Left N/S Suspension Leg Carrier Brake Disc

BMW 3 Series E90 320d N47 Rear Left N/S Suspension Leg Carrier Brake Disc is a complete component from the Suspension replacement kits group, designed for the rear axle on the driver's side. This solution allows for an efficient, technically consistent replacement of the suspension carrier assembly along with the brake system component, which facilitates service and reduces vehicle downtime.

Specifications and technical data

• SKU: 6774809-20
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 6774809
• Substitutable numbers: 33326774809, 6774809, 34216768697, 6768697, 33326774805, 6774805, 33326757079, 6757079, 33326761581, 6761581, 34216764651, 6764651, 34216855007, 6855007, 33217547075, 7547075, 33217533445, 7533445
• Location on the vehicle: Rear, Left
• Category: Suspension Component Replacement Kits

Purpose and vehicle placement

The presented component is designed for installation on the rear left side of the vehicle, in the suspension and wheel brake area. The assembly includes the leg carrier and an integrated brake disc, which ensures proper wheel guidance, transfer of loads from the body to the road, and stable mounting of the brake system components.

An assembly configured in this way is particularly useful for post-collision repairs, replacing worn suspension components, or for comprehensive restoration of the rear axle in a BMW 3 Series E90 generation with an N47 engine.

Benefits of using an original BMW assembly

As a BMW brand part, the suspension and brake assembly maintains factory geometry, which translates into predictable vehicle handling and correct cooperation with other rear axle components. The original design minimizes the risk of alignment issues, uneven tire wear, or improper brake operation.

The main advantages of this solution include:

• consistent load-bearing structure for the hub, control arms, and brake components,
• preservation of factory mounting points,
• easier diagnostics and future service due to compliance with manufacturer documentation.

Use in service and repairs

This suspension assembly with a brake disc will work well both in professional service centers and in workshops specializing in the BMW brand. It enables:

• replacement of a damaged or corroded suspension carrier on the rear left side,
• simultaneous renewal of key rear brake system components,
• restoration of correct geometry and structural rigidity in the wheel mounting area.

Used condition means that the component comes from dismantling, which allows for reducing repair costs while maintaining compliance with BMW factory specifications. This is a practical solution for accident repairs and for budget-friendly renovations of fleet or private vehicles.

Selection and technical compatibility

The element has a dedicated OEM part number and a set of interchangeable numbers, which facilitates precise identification in BMW catalogs and service systems. This allows for verifying compatibility with a specific version of the BMW 3 Series E90 320d N47, avoiding assembly problems or structural differences between body variants and model years.

Before purchasing, it is worth comparing the suspension and brake system configuration in the vehicle with service documentation to confirm full compatibility. Using an original assembly with the appropriate reference numbers reduces the risk of additional modifications and speeds up the installation process.

Support in part selection and tuning with used components

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 control arms, springs, or shock absorbers, check the available parts in the BMW suspension replacement kits category.

When planning budget repairs or modifications to the suspension and brakes, it is worth considering the use of proven, used components. You can read about how to effectively use second-hand parts in premium class cars in the article Audi on second-hand parts – tuning and repairs without loss of quality, which shows a practical approach to quality and cost-effectiveness of such solutions also in the context of other German brands.