BMW F45 Coil Spring Rear Axle Suspension Left Right Set QK

Visual condition of the part

The product shows signs of use visible in the photos.

BMW F45 Coil Spring Rear Axle Suspension Left Right Set QK is a set of original suspension components designed for the rear axle, covering both the left and right sides. The coil spring set ensures stable body support, predictable vehicle handling, and consistent suspension performance. This is a solution for users who expect confident handling, correct geometry, and uniform rear axle operation in their BMW.

Specifications and technical data

• SKU: F45QKREARCOILSPRINGSET
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: F45 QK Rear Coil Spring Set
• Substitutable numbers: F45 QK Rear Coil Spring Set
• Location on the vehicle: Rear, Right, Left
• Category: Leaf & Coil Springs

Purpose and function in the suspension

The presented coil spring set is a rear suspension component, operating on both the left and right sides. It is responsible for maintaining the correct vehicle ride height, transferring dynamic loads, and working in conjunction with shock absorbers to dampen vibrations. Thanks to being tailored to the specific axle and sides of the vehicle, the springs maintain consistent deflection parameters, which translates into stability during braking, predictable behavior in corners, and driving comfort during daily use.

Technical characteristics and fitment

The rear axle coil springs in this set belong to the Leaf and Coil Springs category, meaning they are designed as load-bearing suspension elements operating under constant load. The design of the springs is adapted to the geometry of the BMW F45 rear axle, ensuring the correct suspension performance characteristics are maintained without the need for modifications to other components. The placement on the vehicle covers the rear axle and both sides – right and left – which facilitates replacement in pairs and helps avoid stiffness differences between the sides of the vehicle.

Benefits of using the spring set

Using a complete rear axle coil spring set in a BMW F45 allows for maintaining consistent suspension performance parameters on both sides of the vehicle. Replacing them in pairs reduces the risk of uneven body sagging and improves the predictability of the car's reaction to road irregularities. For the user, this means:

• more confident handling at higher speeds,
• better vehicle control during sudden maneuvers,
• maintaining the correct rear axle geometry over the long term of operation.

The product comes from the BMW brand, which helps maintain factory suspension performance parameters and compatibility with other chassis components.

Condition and service application

The rear axle coil spring set is offered as a used item, making it a reasonable alternative for service repairs when the priority is to maintain the original suspension characteristics while optimizing costs. This type of component is suitable for replacing damaged or excessively worn springs, as well as for restoring the correct body position after a collision or intensive use. Selecting components compatible with the BMW F45 design reduces the risk of installation issues and facilitates workshop work.

Expanding work within the BMW suspension area

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

For users interested in deepening their knowledge about the operation of powertrain components and the impact of service parts on vehicle performance, the article describing the refreshment of a Mercedes diesel unit may be helpful – Second life of the Mercedes OM642 engine – how injectors and a turbocharger restore the power of the 3.0 V6 CDI. Although it concerns a different brand, it well illustrates the importance of proper selection and the condition of key components in the entire vehicle system.