Bilstein B4 OE Replacement (Air) Front Suspension Air Spring

Mercedes-Benz R320 Bluetec (2005–2010)

Part #: 44-121167

Overview

The Bilstein B4 OE Replacement (Air) suspension air spring is engineered to restore the original ride quality and handling of your Mercedes-Benz R320 Bluetec. Designed specifically for models equipped with factory air suspension, this component ensures a seamless fit and reliable performance. Whether your vehicle is experiencing uneven ride height, air leaks, or suspension sag, this air spring provides a direct replacement that helps maintain your vehicle’s intended comfort and handling characteristics.

Perfect for Mercedes-Benz owners seeking a high-quality, OE-grade solution, the Bilstein B4 air spring is ideal for restoring the factory feel without the need for extensive modifications. It is suitable for daily drivers, enthusiasts, and professional repair shops aiming to keep their Mercedes-Benz running at peak performance. With Bilstein’s reputation for durability and precision, this air spring helps support a smooth, controlled ride while maintaining proper vehicle height and alignment.

Key Features

The Bilstein B4 OE Replacement air spring incorporates advanced engineering and high-quality materials to deliver consistent performance and longevity. Its key features include:

• OE-grade construction using durable rubber and reinforced components to withstand the rigors of daily driving and varying road conditions.
• Direct-fit design that connects seamlessly to the original air suspension connectors, ensuring a modification-free installation process.
• Precise engineering to restore the original ride height and handling characteristics of your Mercedes-Benz R320 Bluetec.
• Manufactured to meet or exceed OE standards, ensuring reliability and safety in every mile.
• Designed to work in conjunction with the vehicle’s existing air suspension system, supporting optimal ride comfort and vehicle stability.
• Resistant to air leaks and degradation, providing long-lasting performance and reducing the need for frequent replacements.
• Backed by Bilstein’s reputation for quality and innovation in suspension technology.

Construction & Design

The Bilstein B4 OE Replacement air spring features a robust rubber bellows constructed from high-quality, durable materials that resist cracking, ozone, and environmental wear. Its reinforced design ensures consistent performance over time, even under demanding driving conditions. The component is engineered with precision to match the original specifications of your Mercedes-Benz R320 Bluetec, ensuring a perfect fit and function.

The design emphasizes ease of installation, with direct connections to the factory air suspension system. This eliminates the need for modifications or additional parts, allowing for a straightforward replacement process. The high-quality materials and meticulous manufacturing standards ensure that the air spring maintains its shape and performance, providing a comfortable ride and stable handling for years to come.

Installation & Fitment

The Bilstein B4 OE Replacement air spring is a direct-fit component that connects seamlessly to your vehicle’s existing air suspension system. No cutting, drilling, or special tools are required for installation, making it suitable for both professional technicians and experienced DIY enthusiasts. The process typically involves removing the old air spring and replacing it with this new unit, restoring the original ride height and suspension performance.

• Designed specifically for Mercedes-Benz R320 Bluetec models from 2005 to 2010.
• Connects directly to the factory air suspension system without modifications.
• No additional tuning or adjustments are necessary after installation.

Ensure your vehicle is properly supported and follow the manufacturer’s installation instructions for optimal results.

What's Included

• One front suspension air spring assembly
• All necessary mounting hardware and fittings
• Installation instructions

Ideal For

• Mercedes-Benz R320 Bluetec owners seeking to restore factory ride quality
• Vehicles experiencing air suspension leaks or sagging
• Enthusiasts aiming to maintain optimal handling and comfort
• Professional repair shops performing OE replacements