BMW E61 525d M57N Rear Right O/S Output Shaft Suspension Leg Wheel Carrier

BMW E61 Rear Right Knuckle Axle Suspension Assembly is a complete drivetrain component designed for the rear right axle, ideal for professional repair or replacement of worn parts. This used component from the Suspension Replacement Kits group allows for the restoration of correct geometry, stability, and predictable handling of the BMW 5 Series E61.

Specifications and technical data

• SKU: 6770924-4
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 6770924
• Substitutable numbers: 33326770924, 34216765910, 33207572430, 33207572429, 34216766074, 34216864061, 6770924, 6765910, 7572430, 7572429, 6766074, 6864061, 6761228, 7526745, 7521630, 6753215, 6772085, 33326761228
• Location on the vehicle: Rear, Right
• Category: Suspension Component Replacement Kits

Purpose and Function in BMW Suspension

The rear right axle knuckle is responsible for precise wheel guidance, transferring loads from the body to the road, and cooperating with the braking and drivetrain systems. In practice, this means:

• maintaining the correct wheel position relative to the body,
• stable transfer of driving torque to the rear axle,
• proper cooperation with control arms, shock absorber, and hub,
• preserving the factory handling characteristics of the BMW E61.

Thanks to the use of an original design solution, this suspension element helps to reduce unwanted play, improve traction, and minimize uneven tire wear.

Benefits of Using an Original BMW Part

Choosing an original BMW axle knuckle from disassembly is a sensible compromise between repair cost and quality. Compared to low-budget aftermarket alternatives, an OEM component ensures:

• factory fit to the E61 rear suspension design,
• compliance with manufacturer-specified geometry,
• stable vehicle behavior at higher speeds and under load,
• easier installation without the need for modifications.

The used condition of the part allows for a lower service cost while maintaining the original build quality characteristic of the BMW brand.

Professional Installation and Service Application

The rear right axle knuckle is particularly recommended for collision repairs, replacement of damaged suspension components, or when play is detected in the rear axle area. In workshops specializing in BMW E61, such a set allows for:

• reduced repair time due to the completeness of the assembly,
• preservation of correct suspension and brake mounting points,
• restoration of proper wheel alignment and camber angle,
• reduced risk of recurring faults due to improper part fitment.

To maximize the potential of this component, installation in a specialized service center is recommended, followed by a rear axle geometry check.

Operation of Used Suspension Components

With proper operation and periodic inspection, a used axle knuckle can function in the vehicle for a long time. It is worth paying attention to the condition of cooperating components – bushings, bearings, control arms, and shock absorbers – to avoid transferring excessive loads to the newly installed part. If you want to learn how to practically care for disassembled components and extend their lifespan, read the guide How to Extend the Lifespan of Used Car Parts?, which describes, among other things, best practices for suspension maintenance.

Related BMW Suspension Components

When replacing the axle knuckle, it is often considered to also inspect other rear drivetrain components, such as control arms, mounts, or additional mounting elements, to comprehensively refresh the drive axle's operation. If you are planning a broader range of work on your BMW's rear axle and want to select compatible components from the same group, check the available parts in the BMW Suspension Replacement Kits category.