Bilstein B4 OE Replacement Suspension Strut Assembly

2004–2007 BMW 525i

Part #: 22-212696

Overview

The Bilstein B4 OE Replacement Suspension Strut Assembly is designed to restore the original ride quality and handling characteristics of your BMW 525i from 2004 to 2007. Engineered with precision and backed by Bilstein's renowned reputation for quality, these dampers provide a reliable solution for drivers seeking to maintain their vehicle's factory performance. Whether your original struts have worn out or you're looking to bring back the factory feel after repairs, the B4 OE Replacement is an excellent choice.

These struts are ideal for daily drivers, enthusiasts who want to preserve OEM ride comfort, and those seeking a cost-effective way to restore their vehicle's handling without sacrificing quality. With Bilstein's commitment to durability and performance, you can trust that these struts will deliver consistent, safe, and comfortable driving experiences.

Key Features

The Bilstein B4 OE Replacement Strut Assemblies incorporate advanced engineering and high-quality materials to ensure they meet or exceed OE standards. Designed specifically for the BMW 525i from 2004 to 2007, these dampers provide a seamless fit and reliable performance. Key features include:

• OE-style design and construction to match the original factory specifications, ensuring perfect fitment and function.
• High-quality steel housing with a corrosion-resistant coating for enhanced durability and longevity.
• Bilstein's patented monotube design, which offers improved heat dissipation and consistent damping performance under various driving conditions.
• Optimized valving to restore original handling, ride comfort, and stability, effectively absorbing road imperfections and reducing body roll.
• Manufactured to meet or exceed OE standards, ensuring safety and reliability for everyday driving.
• World-famous Bilstein quality, providing peace of mind and long-lasting performance.

Construction & Design

The Bilstein B4 OE Replacement Strut Assemblies feature a robust monotube design constructed from high-strength steel and equipped with a corrosion-resistant coating to withstand harsh road conditions. The assembly includes a precision-engineered piston, a high-quality seal system, and a durable dust boot to protect internal components from dirt and debris. The design ensures consistent damping performance, improved heat dissipation, and a smooth, comfortable ride that closely matches the original factory setup.

Every component is engineered with exacting standards, ensuring a perfect fit and reliable operation. The OE-style design guarantees compatibility with your vehicle's existing suspension geometry, making installation straightforward without the need for modifications or additional parts.

Installation & Fitment

The Bilstein B4 OE Replacement Strut Assemblies are designed as direct bolt-on replacements for the original factory units. Installation is straightforward for experienced technicians or DIY enthusiasts with basic suspension knowledge. No cutting, drilling, or special tools are required, and the assembly mounts directly to your vehicle's existing suspension points. Proper torque specifications and alignment are recommended after installation to ensure optimal handling and tire wear.

For best results, it is advisable to replace struts in pairs to maintain balanced handling and ride quality across the front or rear suspension.

What's Included

• Complete OE-style strut assembly with integrated coil spring (if applicable)
• Mounting hardware and top mounts (if included in original design)
• Installation instructions (if provided)

Ideal For

• BMW 525i owners seeking to restore factory ride quality
• Drivers experiencing worn or sagging suspension components
• Enthusiasts looking for reliable, OEM-quality replacement parts
• Anyone wanting to maintain original handling and comfort without aftermarket modifications