Bilstein B4 OE Replacement

2004–2010 Audi A8 Quattro / 2004–2006 VW Phaeton Front Left Air Suspension Spring

Part #: 45-241994

Overview

The Bilstein B4 OE Replacement front left air suspension spring is a high-quality component designed specifically for certain European luxury vehicles, including the Audi A8 Quattro (2004–2010) and the Volkswagen Phaeton (2004–2006). As an OE supplier, Bilstein ensures that these replacement springs meet or exceed the original manufacturer’s standards for durability, performance, and ride comfort. If your vehicle's air suspension system is experiencing issues such as sagging, uneven ride height, or a rough ride, this OE replacement spring offers a reliable solution to restore your vehicle’s original handling and comfort.

Designed for enthusiasts and daily drivers alike, this air suspension spring helps support proper vehicle height and ride quality, ensuring your luxury vehicle maintains its refined driving experience. Whether you're restoring your vehicle after a suspension failure or upgrading to OEM standards, this spring provides a direct-fit, modification-free installation that preserves your vehicle’s factory ride characteristics.

Key Features

Bilstein's OE Replacement air suspension spring is engineered with precision to match the original equipment specifications, ensuring seamless integration with your vehicle's existing suspension system. Crafted from high-quality materials, this spring is built to withstand the rigors of daily driving and maintain consistent performance over time.

• OE-grade construction ensures perfect fitment and reliable operation
• Designed to replace the original air suspension spring without modifications
• Supports proper vehicle height and ride comfort for luxury vehicles
• Manufactured by Bilstein, a trusted OE supplier known for quality and durability
• Engineered to meet or exceed OEM standards for safety and performance
• Corrosion-resistant materials extend the lifespan of the suspension component
• Optimized for a smooth, comfortable ride that matches factory specifications
• Easy installation with direct connection to existing suspension connectors

Construction & Design

This air suspension spring features a robust design utilizing high-strength materials that resist fatigue and corrosion, ensuring long-lasting performance. The spring is engineered with precision to match the original specifications, providing a perfect fit and restoring the vehicle's factory ride height. Its design incorporates advanced manufacturing techniques, including TIG welding and CAD development, to ensure durability and consistent performance under various driving conditions. The spring's construction helps absorb road shocks and maintain optimal suspension geometry, contributing to a comfortable and controlled ride.

Installation & Fitment

The Bilstein B4 OE Replacement air suspension spring is designed for straightforward, bolt-on installation. It connects directly into your vehicle's existing suspension system without the need for modifications, cutting, or drilling. No special tools or tuning are required, making it an ideal choice for DIY enthusiasts and professional mechanics alike. Proper installation ensures your vehicle's suspension system functions as intended, restoring ride height and handling characteristics to factory standards.

• Direct-fit replacement for the original air suspension spring
• No modifications, cutting, or tuning required
• Compatible with the original suspension connectors and mounting points

What's Included

• Front left air suspension spring
• Installation hardware and mounting components
• Comprehensive instructions for proper installation

Ideal For

• Owners experiencing suspension sag or uneven ride height
• Restoring factory ride quality on Audi A8 Quattro (2004–2010) and VW Phaeton (2004–2006)
• Enthusiasts seeking OE-quality replacement parts for luxury vehicles
• Professionals performing suspension repairs or upgrades