Bilstein B4 OE

2019–2021 BMW Z4 / 2020–2021 Toyota GR Supra Front Right Suspension Strut Assembly

Part #: 22-309648

Overview

The Bilstein B4 OE Replacement suspension strut assembly is designed to restore your vehicle's original ride quality and handling characteristics. Engineered with precision and backed by Bilstein's renowned reputation for quality, these dampers are an excellent choice for drivers seeking to maintain or return to factory performance standards. Whether your vehicle has experienced wear or damage, or you're performing routine maintenance, the B4 OE strut assembly ensures your vehicle continues to deliver the comfort, stability, and responsiveness you expect from the factory.

Ideal for daily drivers, enthusiasts, and those restoring their vehicle to its original condition, the Bilstein B4 OE strut assembly provides a seamless fit and reliable performance. It is specifically engineered to meet or exceed OE standards, ensuring your vehicle maintains its original handling dynamics and ride comfort. With Bilstein's advanced damping technology, you'll get a smooth, controlled ride that preserves the vehicle's factory feel and safety.

Key Features

The Bilstein B4 OE Replacement dampers incorporate several key features that make them a top choice for maintaining your vehicle's original performance:

• OE-Quality Construction: Built with high-quality materials and precision manufacturing, these dampers meet or surpass factory specifications for durability and performance.
• Direct OE Replacement: Designed to fit seamlessly into your vehicle's existing suspension system without modifications, ensuring an easy, bolt-on installation.
• Bilstein Gas Pressure Technology: Utilizes advanced gas pressure damping technology to deliver consistent, fade-free performance and optimal handling.
• Restores Factory Ride & Handling: Maintains the original ride comfort, stability, and responsiveness of your BMW Z4 or Toyota GR Supra, ensuring a factory-like driving experience.
• Enhanced Durability: Engineered to withstand the rigors of daily driving, with corrosion-resistant components for long-lasting performance.
• World-Famous Bilstein Quality: Known worldwide for innovative suspension solutions, Bilstein's OE dampers are trusted by professionals and enthusiasts alike.
• Perfect for Restoration & Maintenance: An ideal choice for replacing worn-out or damaged factory dampers to restore your vehicle's original handling characteristics.

Construction & Design

The Bilstein B4 OE suspension strut assembly features a robust design that emphasizes durability and precise performance. The shock absorber housing is made from high-strength steel, ensuring resistance to impact and corrosion. The piston rod is crafted with high-quality materials and finished with a protective coating to prevent rust and wear over time. The internal damping components are engineered to match the factory specifications, providing a smooth and controlled ride.

The assembly includes a pre-assembled strut with a factory-matched spring and mount, making installation straightforward and hassle-free. Its design ensures perfect alignment with your vehicle's suspension geometry, preserving handling and safety. The use of advanced manufacturing techniques, such as TIG welding and CNC machining, guarantees tight tolerances and consistent performance across every unit.

Installation & Fitment

The Bilstein B4 OE Replacement suspension strut assembly is a direct bolt-on replacement for the original factory units. No cutting, drilling, or modifications are required, making it suitable for DIY enthusiasts and professional installers alike. The pre-assembled design simplifies installation, and all necessary mounting hardware is included. It is recommended to replace struts in pairs to ensure balanced handling and optimal performance.

• Easy, bolt-on installation with factory mounting points
• No special tools or modifications needed
• Designed to match OEM specifications for perfect fitment

For best results, it is advisable to perform a wheel alignment after installation to ensure proper suspension geometry and tire wear.

What's Included

• Front right suspension strut assembly
• All necessary mounting hardware and components
• Installation instructions

Ideal For

• Owners seeking to restore their vehicle's original ride quality and handling
• Drivers replacing worn or damaged factory dampers
• Enthusiasts performing routine maintenance or restoration
• Those who want a reliable, high-quality OE replacement suspension component