BMW F20 F21 F22 F23 F30 F31 F32 F33 Rear Axle Diff Carrier Cradle Subframe

BMW F20 F21 F30 F31 Rear Axle Carrier Cradle is an original structural component of the rear body, belonging to the category of longitudinal body frame parts and brackets. Designed by BMW as a load-bearing element of the rear suspension, it provides stable support for key sub-assemblies and ensures proper driving geometry.

Specifications and technical data

• SKU: 6792505
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 6792505
• Substitutable numbers: 6792505, 33316792505, 6797503, 33316797503, 6863637, 33316863637
• Location on the vehicle: Rear
• Category: Frame Rails & Subframes

Purpose and Function in the Vehicle

The presented rear axle carrier is dedicated to BMW F20, F21, F30, and F31 series models and is an integral part of the rear body structure. As a rear suspension bracket, it is responsible for transferring loads from the control arms, shock absorbers, and other components to the body, as well as maintaining the correct spacing and position of mounting points.

Its location on the vehicle is the rear, meaning the component operates in close proximity to the rear axle, influencing:

• driving stability at higher speeds,
• maintaining suspension geometry within the camber and toe ranges,
• even load distribution during braking and acceleration.

Construction and Technical Characteristics

The BMW rear axle cradle is a skeletal element, designed as a load-bearing subframe for the suspension. The construction features precisely positioned mounting points for:

• control arms and guiding elements of the rear suspension,
• shock absorber mounts or their brackets (depending on the suspension version),
• drivetrain components or additional mounts, if provided for in the specific vehicle configuration.

The original BMW design ensures adequate torsional rigidity and fatigue strength, which translates to predictable vehicle behavior in corners and under load. Thanks to the factory design, compatibility with the original mounting points in the body is maintained, without the need for modifications.

Condition, Origin, and Benefits of Using OEM Parts

This component comes from the original BMW production line, meaning it offers perfect fitment for the F20/F21/F30/F31 platform in terms of geometry, hole spacing, and mounting standards. As a used part, the axle cradle is intended for users seeking a solution compliant with factory specifications while also aiming to reduce repair costs compared to purchasing a new component.

Using an original BMW rear axle carrier allows for:

• maintaining factory driving parameters after repair or replacement of suspension components,
• easier geometry adjustment due to the correct positioning of mounting points,
• seamless integration with original bolts, bushings, and other system components.

Selection, Compatibility, and Installation Aspects

Before purchasing, it is recommended to verify the compatibility of the axle cradle with the specific engine and equipment version of the car, using the OEM part number and available interchangeable numbers in the technical specification. This allows for precise selection of the longitudinal body frame part and bracket for a given BMW model, minimizing the risk of mismatch.

During installation, pay attention to:

• checking the mounting points for straightness and any signs of previous repairs,
• using the correct tightening torques according to BMW service documentation,
• re-adjusting the suspension geometry after completing the work to fully utilize the structural potential.

More About Suspension and Related Components

If you are considering a broader upgrade or repair of the drivetrain, it is worth consulting a guide describing the differences between standard and sport suspension and the selection of used suspension components. A detailed discussion can be found in the article “Standard vs. Sport Suspension – Differences in Construction and Is It Worth Buying Used Suspension Parts?”, which helps in making informed choices for components such as axle carriers, control arms, or other rear suspension components.

If you are also looking for other BMW longitudinal body frame parts and brackets for your car, check out the available BMW longitudinal body frame parts and brackets in our store to gather all necessary structural elements in one place.