BMW F40 WH Rear Coil Spring Suspension Coil Dampening Set Left Right N/O/S

BMW F40 WH Rear Coil Spring Suspension Coil Dampening Set Left Right N/O/S is a set of original suspension components from the Leaf springs and coil springs group, designed for installation on the rear axle of BMW vehicles. The set includes both sides – left and right – which facilitates consistent replacement and helps maintain predictable, stable vehicle handling.

Specifications and technical data

• SKU: 6866771
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 6866771
• Substitutable numbers: 6866771, 33536866771
• Location on the vehicle: Rear, Right, Left
• Category: Leaf & Coil Springs

Purpose and vehicle placement

The presented set of springs is designed to work on the rear axle of the vehicle, with dedicated placement for the left and right sides. This solution ensures consistent deflection parameters and proper spring characteristics on both sides, which translates into predictable car behavior during acceleration, braking, and driving over uneven surfaces.

Springs from this design group are responsible for maintaining the correct suspension height, body stabilization, and effective load transfer to the rear part of the chassis. Using a dedicated set for the left and right sides reduces the risk of suspension asymmetry and unwanted body roll.

Technical and functional characteristics

As components from the Leaf springs and coil springs category, the rear springs in this set work in direct conjunction with shock absorbers and other suspension components. Their task is to:

• maintain the specified height of the rear of the vehicle under variable loads,
• dampen vibrations resulting from road surface irregularities,
• stabilize the driving path during dynamic maneuvers,
• ensure even force distribution on the left and right sides of the axle.

Selecting springs dedicated to a specific BMW platform allows for maintaining factory handling characteristics without the need to interfere with other suspension system elements. The set is intended for installation in place of the original components, which facilitates service work and shortens replacement time.

Brand, origin, and condition of the components

The springs come from a BMW vehicle, which means they maintain compliance with the brand's factory design standards. The components are used, making them a cost-effective solution while maintaining proper functionality and fitment for the specific model.

Choosing original components from dismantling is particularly important for users who want to maintain driving characteristics close to the factory settings, avoiding the accidental selection of replacements with different operating parameters.

Selection, compatibility, and purchase support

To correctly select the spring set for a specific BMW unit, it is crucial to verify compatibility with the OEM part number and interchangeable numbers visible in the technical specification. This allows avoiding problems with installation and incorrect suspension operation after replacement.

If you want to deepen your knowledge on the professional selection of aftermarket components and avoid misguided purchases, it is worth using practical expert tips – especially in the scope of interpreting OEM markings and reference numbers. Useful information can be found in the article No more misguided purchases! How to professionally select used car parts, which discusses the principles of safe selection of used components step by step.

Expansion of BMW suspension upgrades

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 additional springs, leaf springs, or related suspension components, check the available parts in the BMW leaf springs and coil springs category.

Summary of the set application

BMW F40 WH Rear Coil Spring Suspension Coil Dampening Set Left Right N/O/S is a practical solution for users looking for original, used rear suspension components for BMW vehicles. The set covering both sides of the axle facilitates maintaining even suspension performance characteristics, and its inclusion in the Leaf springs and coil springs group guarantees proper cooperation with other chassis components. It is a good choice for repairs where compliance with the factory design and predictable vehicle behavior on the road are important.