Bilstein B4 OE Replacement Suspension Strut Assembly

2014–2018 BMW 640i

Part #: 22-265524

Overview

The Bilstein B4 OE Replacement Suspension Strut Assembly is designed to restore the original ride quality and handling characteristics of your BMW 640i from 2014 to 2018. Engineered with precision and backed by Bilstein’s renowned reputation for quality, these dampers provide a seamless replacement for worn or damaged factory struts, ensuring your vehicle maintains its factory performance and comfort.

Whether you're a daily driver seeking to maintain your vehicle’s original driving experience or a performance enthusiast aiming to keep your BMW performing at its best, the B4 OE Replacement struts deliver reliable, consistent damping. They are an ideal choice for restoring ride comfort, handling, and safety, helping you enjoy a smooth and controlled driving experience every time you get behind the wheel.

Key Features

The Bilstein B4 OE Replacement Damper Assemblies incorporate advanced engineering and high-quality materials to match or exceed OE standards. These features include:

• OE-Equivalent Design: Precisely engineered to match the original specifications of your BMW 640i, ensuring perfect fitment and performance.
• High-Quality Construction: Made with durable steel and high-performance damping components to withstand the rigors of daily driving and maintain long-term reliability.
• Monotube Gas Pressure Technology: Utilizes Bilstein’s proven monotube design, which provides consistent damping performance, improved handling, and enhanced stability under various driving conditions.
• Optimized Damping: Engineered to restore the factory ride quality, handling, and safety, providing a comfortable yet controlled driving experience.
• Corrosion Resistance: Coated with protective finishes to resist rust and corrosion, extending the lifespan of the strut assembly.
• Easy Installation: Designed as a direct replacement for OE units, allowing for straightforward installation without modifications or special tools.

Construction & Design

The Bilstein B4 OE Replacement Strut Assemblies feature a robust monotube design that ensures consistent damping performance and heat dissipation. The high-strength steel housing and precision-machined components guarantee durability and a perfect fit. The struts are engineered with a focus on maintaining the original ride height and handling characteristics of your BMW 640i, ensuring that your vehicle drives like new after installation. The protective coatings and corrosion-resistant materials help preserve the integrity of the components over time, even in challenging driving environments.

Installation & Fitment

The Bilstein B4 OE Replacement Suspension Strut Assemblies are designed as direct bolt-on replacements for the original factory units on your BMW 640i. No cutting, drilling, or modifications are required, making installation straightforward for experienced DIY enthusiasts or professional mechanics. It is recommended to replace struts in pairs to ensure balanced handling and optimal performance. Proper alignment after installation is advised to maintain precise steering and tire wear.

• Direct fit for 2014-2018 BMW 640i models
• No special tools or modifications required
• Installation typically takes 1-2 hours per side

What's Included

• One complete OE Replacement Strut Assembly (left or right)
• All necessary mounting hardware and components for installation
• Instruction manual for proper installation procedures

Ideal For

• BMW 640i owners seeking to restore original ride quality and handling
• Drivers experiencing worn or damaged factory struts
• Enthusiasts who want reliable, high-quality replacement parts
• Anyone looking to maintain the factory driving experience without sacrificing comfort or safety