Springs Screw BMW F21 F20 F22 F23 Supsension Spring Chassis Coil Spring Rear Set

Springs Screw BMW F21 F20 F22 F23 Supsension Spring Chassis Coil Spring Rear Set is an original suspension system component designed for the rear axle of selected BMW F-series models. The coil spring set provides stable body support, proper suspension operation, and predictable vehicle handling in daily use. This is a solution for users who want to maintain factory handling characteristics and solid durability of suspension components.

Specifications and technical data

• SKU: 6851723-1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 6851723
• Substitutable numbers: 6851723, 33536851723
• Location on the vehicle: Rear
• Part type: Coil Spring Set
• Category: Leaf & Coil Springs

Purpose and function in the suspension

The presented set belongs to the Leaf springs and coil springs category and is intended for installation on the rear axle of the vehicle. Coil springs are responsible for maintaining the correct body height, carrying loads, and working with shock absorbers to dampen unevenness. In BMW F-series vehicles, their proper selection has a direct impact on:

• driving stability at higher speeds,
• ride comfort when driving over bumps,
• even load distribution on other suspension components,
• maintaining the correct rear axle wheel geometry.

Benefits of using original BMW springs

Using original coil springs in the rear suspension of a BMW allows you to maintain the factory performance parameters of the chassis. The deflection and stiffness characteristics have been selected by the manufacturer based on vehicle weight, load distribution, and tuning with the shock absorbers. As a result:

• the car maintains predictable reactions in corners,
• excessive suspension "bottoming out" under full load is limited,
• the risk of premature wear of other rear axle components is reduced. For users who value consistent handling and confidence in the car's behavior, choosing an original coil spring set is a technically sound and long-term cost-effective solution.

Set characteristics and installation

The coil spring set is designed for installation in the rear suspension, replacing factory components. The design, tailored to the BMW F-series platform, allows for installation at the points provided by the vehicle manufacturer, without the need for modifying mounts or interfering with other sub-assemblies. In practice, this means:

• maintaining original suspension geometry,
• no need for spring seat adaptation,
• the ability to use standard BMW service procedures. After replacing the springs, it is recommended to perform a rear axle geometry check to fully utilize the potential for stable handling and even tire wear.

Product condition and practical application

The offered set comes from a BMW vehicle and is a used component, which allows for economical suspension repair while maintaining the original manufacturer's specifications. This solution is particularly beneficial in the case of:

• repairs after mechanical damage to the springs,
• restoring the stock suspension characteristics after previous modifications,
• comprehensive rear axle service when it is necessary to replace more than one suspension component. For owners of BMW F-series cars who want to maintain the consistency of the chassis, the use of original coil springs is technically justified and allows for maintaining the factory balance between comfort and handling precision.

Suspension system expansion and technical knowledge

If you are planning a comprehensive repair or upgrade of the rear suspension zone in your BMW and need other elements from the same group, such as additional springs, leaf springs, or suspension support elements, check the available parts in the BMW Leaf springs and coil springs category. If you want to better understand why original used components for premium brands are becoming an increasingly popular solution for suspension and other system repairs, it is worth reading the article Crisis in the new parts market? Why in 2026 used originals for premium cars (BMW, Mercedes, Porsche) are the hottest trend, which discusses current trends and the practical benefits of such an approach.