The BMW F32 F36 Cradle Beam Subframe Rear Axle Carrier is a structural component from the category of longitudinal body frame parts and brackets, designed for use in BMW F-series vehicles. It serves as a robust foundation for the suspension, ensuring stable mounting of key components and proper driving geometry.
Specifications and technical data
- SKU: 6872120
- Mark: BMW (Genuine OE)
- Condition: Used
- OEM Part Number: 6872120
- Substitutable numbers: 6872120, 31106872120, 6865429, 31116865429, 6866982, 31106866982
- Location on the vehicle: Front
- Category: Frame Rails & Subframes
Purpose and Function in the Vehicle
The described BMW F32 F36 cradle / beam / rear subframe acts as a load-bearing element for suspension components and parts of the drivetrain. As part of the longitudinal body frame parts and brackets group, it is responsible for:
- rigidly connecting the suspension to the body,
- maintaining the correct geometry of the rear axle wheels,
- transferring loads generated during acceleration, braking, and traversing uneven surfaces.
Its placement in the vehicle, designated as front, means the element interacts with the front part of the supporting structure, maintaining consistency with BMW's original design concept for this generation of bodywork.
Construction and Design Fit
The cradle is designed as an OEM BMW part, which translates to compatibility with factory mounting points and the strength parameters specified by the manufacturer. This ensures:
- perfect fit with original body mounts without the need for modifications,
- maintaining the correct positioning of control arms, shock absorber mounts, and other suspension components,
- preserving the vehicle's factory handling characteristics, which is crucial for safety and predictable vehicle behavior.
As a component within the longitudinal body frame parts and brackets category, the cradle contributes to the structural framework of the rear of the vehicle, influencing force distribution within the body and resistance to operational overloads.
Condition, Origin, and Service Application
The offered rear subframe is a used part, sourced from a dismantled BMW vehicle. This type of part is often chosen as a service solution in situations such as:
- post-accident repair following damage to the suspension or longitudinal frame parts,
- rectifying deformations affecting wheel alignment and vehicle handling,
- restoring factory geometry after intensive use or corrosion of load-bearing elements.
Using an original BMW cradle ensures consistency with the manufacturer's service documentation and facilitates subsequent wheel alignment adjustments and suspension diagnostics.
Benefits of Installing an Original BMW Cradle
Choosing a used BMW F32 F36 rear cradle offers a range of practical advantages:
- compatibility with factory suspension and drivetrain components,
- maintaining predictable vehicle behavior during dynamic driving and under full load,
- an economical repair option compared to purchasing a new part from an authorized dealer,
- easier workshop procedures due to standard mounting points and a known OEM design.
For workshops specializing in BMW, this part allows for repairs to be carried out according to the manufacturer's technology, without compromising on fit or structural rigidity.
Part Selection and Additional Technical Resources
When selecting a cradle for a specific body version and engine, it is crucial to compare the OEM part number and interchange numbers with the vehicle's specifications. If in doubt, it is advisable to verify the data using the VIN or the manufacturer's catalog to ensure complete assembly compatibility.
If you are looking for other parts in the Longitudinal Body Frame Parts and Brackets BMW category, check out our dedicated offer: BMW Longitudinal Body Frame Parts and Brackets.
For users interested in the operation and servicing of BMW diesel models, we recommend an article comparing popular engines – BMW N47 vs M57 / M57N / M57N2 – Ranking of Legendary Diesels, Performance, and Used Part Costs. This provides practical knowledge for planning major repairs and vehicle upgrades.
