Bilstein B4 OE Replacement (Air) Front Suspension Air Spring

Mercedes-Benz R320 Bluetec (2005–2014) Front Suspension Air Spring

Part #: 44-121167

Overview

The Bilstein B4 OE Replacement (Air) front suspension air spring is engineered to restore the original ride quality and handling of your Mercedes-Benz R320 Bluetec. Designed specifically for vehicles equipped with factory air suspension systems, this air spring offers a direct replacement that ensures a seamless fit and reliable performance. Whether your original air spring has developed leaks, lost pressure, or simply needs an upgrade, this component provides a cost-effective solution to maintain your vehicle's comfort and safety.

Perfect for Mercedes-Benz owners seeking to restore factory ride height and handling without the need for complex modifications, the Bilstein B4 air spring is built to meet or exceed OE standards. It is ideal for daily drivers, enthusiasts, and fleet operators who demand durability, consistent performance, and peace of mind on the road.

Key Features

The Bilstein B4 OE Replacement air spring incorporates advanced engineering and high-quality materials to deliver a range of benefits:

• OE-grade construction ensures perfect compatibility with your Mercedes-Benz R320 Bluetec, providing a straightforward, modification-free installation.
• Manufactured with durable rubber and reinforced with high-strength steel components to withstand the rigors of daily driving and varying road conditions.
• Designed to restore the original ride height and handling characteristics, maintaining the vehicle's factory comfort and stability.
• Precisely engineered to match the original air spring's dimensions and mounting points, ensuring a perfect fit without the need for additional modifications.
• Built to meet or surpass OE quality standards, offering long-lasting performance and reliability.
• Contributes to maintaining proper suspension geometry, which is essential for optimal tire wear, handling, and safety.
• Compatible with the vehicle's existing air suspension system, including sensors and control modules, for a seamless integration.
• Backed by Bilstein’s reputation for quality and innovation, providing confidence in your suspension repair or upgrade.

Construction & Design

The Bilstein B4 air spring features a robust rubber bellows designed to handle the pressure fluctuations typical of air suspension systems. Its high-quality rubber compound resists cracking, ozone, and other environmental factors, ensuring longevity and consistent performance. The internal steel components are engineered for strength and durability, maintaining structural integrity under load and during dynamic driving conditions. The design emphasizes precise fitment, with all mounting points and connectors matching OE specifications, facilitating a straightforward installation process without the need for modifications or special tools.

Performance & Sound

As a direct OE replacement, the Bilstein B4 air spring restores the original ride quality of your Mercedes-Benz R320 Bluetec. It helps maintain proper vehicle height, ensuring consistent handling and comfort. While it does not increase performance metrics like horsepower or torque, it plays a crucial role in suspension performance, ride comfort, and vehicle stability. You can expect a smooth, controlled ride that feels factory-fresh, with reliable operation over the lifespan of the component.

Installation & Fitment

The Bilstein B4 OE Replacement air spring is designed for easy, bolt-on installation. It connects directly into the existing air suspension system using the original connectors, requiring no modifications, cutting, or drilling. The process typically involves removing the wheel and accessing the suspension assembly, then replacing the faulty or worn air spring with this new unit. No special tools or tuning are necessary, making it suitable for both professional technicians and experienced DIY enthusiasts. Proper installation ensures optimal performance and longevity of your vehicle's air suspension system.

• Direct replacement for factory air springs on Mercedes-Benz R320 Bluetec (2005–2014)
• Seamless integration with existing air suspension components
• No cutting, drilling, or tuning required

What's Included

• One front suspension air spring assembly
• Installation hardware and mounting components
• Instruction manual for proper installation

Ideal For

• Mercedes-Benz R320 Bluetec owners experiencing air suspension issues
• Those seeking to restore factory ride height and handling
• Enthusiasts and professionals performing suspension repairs or upgrades
• Fleet operators maintaining vehicle comfort and safety

Emissions Note

This product is designed to meet or exceed OE standards for quality and durability. It is intended for use in vehicles that are compliant with local emissions regulations. Please verify compatibility with your specific vehicle model and local laws before installation.