BMW F31 Rear Spring Left Right N/O/S Coil Axle Suspension Set EI

BMW F31 Rear Spring Left Right N/O/S Coil Axle Suspension Set EI is an original set of rear axle suspension components, designed for installation on both the left and right sides. Thanks to the factory geometry and performance characteristics, these springs ensure predictable vehicle handling, body stability, and consistency with the factory suspension tuning. This is the ideal solution for users who want to maintain the original driving dynamics of their BMW 3 Series Touring.

Specifications and technical data

• SKU: F31 EI Rear Coil Spring Set
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: F31 EI Rear Coil Spring Set
• Substitutable numbers: F31 Rear Coil Spring Set, EI
• Location on the vehicle: Rear, Right, Left
• Category: Leaf & Coil Springs

Purpose and function in the suspension

The presented set includes two coil springs mounted on the rear axle, on the right and left sides. These components are responsible for maintaining the correct vehicle ride height, supporting loads, and working in conjunction with shock absorbers to dampen road irregularities. Using springs dedicated to the specific BMW F31 body version allows for maintaining the correct suspension performance characteristics, without the risk of accidental changes in ground clearance or unwanted stiffness.

Construction and fitment for the BMW F31

The springs belong to the Leaf and coil springs category, meaning they are load-bearing suspension components designed to operate in demanding conditions. The shape and parameters of the springs are adapted to the architecture of the BMW F31 rear axle, ensuring proper seating and compatibility with other suspension components.

The original BMW origin ensures precise fitment to mounting points, which facilitates installation and reduces the risk of improper seating. The set is intended for use on both sides of the vehicle, which allows for symmetrical suspension operation and even load distribution.

Benefits of using original rear springs

Using factory springs on the BMW F31 rear axle helps maintain predictable vehicle handling, especially when the trunk is fully loaded or when driving with passengers in the back seat. Key advantages include:

• Consistency with factory tuning – maintaining the handling characteristics intended by the manufacturer.
• Proper body support during dynamic driving and braking.
• Reduction of body roll and more stable behavior in corners.
• Better compatibility with standard rear axle shock absorbers.

For users who value neutral, predictable car reactions, choosing original springs is a safe and technically sound solution.

Condition, verification, and service application

The offered set comes from disassembly and is in used condition, which allows for an economical suspension repair while maintaining the manufacturer's original specifications. Such components are often chosen when replacing worn or broken springs, where the priority is matching the specific model version and reducing service costs.

The rear spring set can be used both for standard maintenance replacements and for repairs following mechanical suspension damage. Replacing both springs on the rear axle simultaneously promotes even suspension operation and minimizes differences in deflection between the left and right sides.

Expanding 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 suspension components, check out the available parts in the BMW leaf and coil springs category.

To better understand why original used suspension components for premium brands are gaining importance, it is worth reading the market analysis and service trends in the article Crisis in the new parts market? Why in 2026 used originals for premium cars (BMW, Mercedes, Porsche) are the hottest trend.