Bilstein B4 OE Replacement Air Suspension Shock Absorber

The Bilstein B4 OE Replacement Air Suspension Shock line delivers a true factory-grade solution for restoring worn or failed air suspension dampers. As a genuine original equipment supplier to the world's leading premium vehicle manufacturers, Bilstein engineers these air suspension shocks to the same exacting standards as factory-installed components — built to the precise specifications that supply global automakers.

Key Features:

• Genuine OE-Level Quality: Engineered and manufactured to meet or exceed original equipment specifications, restoring ride performance and handling precision to like-new condition
• 100% New Construction: Every unit is built entirely from new parts — not rebuilt, remanufactured, or reconditioned — eliminating the uncertainty of worn internal components and ensuring maximum long-term reliability
• Plug-and-Play Installation: Designed to connect directly into the vehicle's existing electrical receptacles for fully modification-free installation and seamless restoration of original suspension function
• Gas-Pressure Monotube Technology: Single-tube damping design delivers consistent, fade-resistant performance across a broad range of driving conditions
• Active & Passive System Compatibility: Available in configurations for both passive and electronically controlled adaptive damping systems, including DampTronic® variants engineered for vehicles equipped with active suspension technology
• Integrated Air Suspension Assembly: Combines the shock absorber, air spring, and level control functions in a single precisely matched unit — restoring full ride height adjustment and adaptive damping response
• Full Electronic Suspension Integration: Unlike many remanufactured alternatives, Bilstein B4 air suspension modules fully support active electronic suspension control, keeping the system functioning exactly as originally designed

The Bilstein B4 OE Replacement Air Suspension Shock line represents the definitive aftermarket solution for premium vehicles equipped with factory air suspension systems. Where remanufactured parts often compromise active control functionality, Bilstein's all-new construction maintains complete OE performance — from ride height regulation to electronic damping response. Each unit in this product line is backed by a limited manufacturer's warranty and reflects the same trusted engineering quality Bilstein delivers to automakers worldwide.