Springs Screw BMW F21 F20 F22 F23 Spring Chassis Spring Rear

BMW F21 F20 F22 F23 Suspension Spring Set is an original part from the Leaf Springs and Suspension Springs group, designed for the rear axle of selected BMW F-series models. This used component allows for a technically correct replacement of a worn spring, restoring stability, predictable handling, and proper suspension function.

Specifications and technical data

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

Intended Use and Function in Suspension

The suspension spring in the set dedicated to BMW F21, F20, F22, and F23 operates on the rear axle, responsible for maintaining the correct body height, controlling deflection, and supporting the shock absorbers. A properly selected element from this group ensures:

• stable vehicle handling during cornering,
• control of body roll during braking and acceleration,
• even load distribution to the rear axle.

By maintaining the factory suspension characteristics, the spring helps to ensure predictable vehicle behavior, which is particularly important in dynamically oriented vehicles like the compact BMW F-series.

Benefits of Using an Original BMW Part

Using an original BMW component from the Leaf Springs and Suspension Springs group means maintaining the design parameters intended by the vehicle manufacturer. This translates to:

• consistent suspension operation with the factory settings of the drivetrain,
• proper interaction with the standard shock absorbers and other rear axle components,
• maintaining ride comfort at a level consistent with the design specifications.

The used element allows for an economical yet technically correct repair, without the need for suspension geometry adjustments or changes to handling characteristics.

Professional Installation and Rear Axle Fitment

The spring is designed to operate on the rear of the vehicle, which simplifies identification and selection during suspension service. When replacing, it is recommended to:

• inspect the condition of the spring seats and rubber components,
• check other rear axle components for wear,
• measure the suspension height after installation to confirm correct seating.

This approach helps to restore even body support and reduce the risk of uneven tire wear or excessive vibrations during driving.

Application in Suspension Service and Upgrades

The presented suspension spring set is suitable for both standard repairs after wear and tear, as well as replacements following mechanical damage to the rear axle. This solution is particularly useful when aiming for:

• maintaining the standard suspension characteristics of BMW,
• reducing repair costs while preserving the original design,
• restoring the correct geometry and height of the rear body.

Selecting a component from the same design group as the factory part minimizes the risk of improper fitment and facilitates service work.

If you are planning a comprehensive repair or upgrade of the rear suspension area in your BMW and need other parts from the same group, such as additional springs, leaf springs, or mounting brackets, check the available parts in the BMW Leaf Springs and Suspension Springs category.

For drivers considering improving the appearance and functionality of their wheels alongside suspension service, a practical guide on selecting and refurbishing alloy wheels may be helpful – you can find it in the article Used Wheels Like New: A Guide to Buying and Refurbishing Alloy Wheels.