Air Suspension Valve Block for Audi A8 (D4) & Bentley Mulsanne

Return to a State of Serenity and Control

The Audi A8 (D4) and Bentley Mulsanne represent the zenith of automotive luxury and technological prowess. Their adaptive air suspension is not just a feature; it's the very soul of their driving experience, delivering a serene, "magic carpet" ride that isolates you from road imperfections while providing poised, confident handling when required.

The nerve center of this sophisticated system is the solenoid valve block. It flawlessly directs pressurized air to maintain the perfect ride height and respond to commands from the Drive Select system. When this component fails, the character of your vehicle is fundamentally compromised. You will notice distressing symptoms such as:

• The vehicle visibly sagging at a corner or entirely after being parked.

• A persistent and alarming "Air Suspension: System Fault" message.

• The inability to use the MMI to raise the vehicle in "Lift" mode.

• A noticeable degradation in ride quality.

More critically, a leaking valve block places your air compressor under constant duress, forcing it to run continuously to compensate for the pressure loss. This will inevitably lead to the burnout of the very expensive compressor unit. This Biste Air Suspension Valve Block is the definitive, high-quality solution to restore your vehicle's integrity and safeguard its complex systems.

ESSENTIAL INSTALLATION ADVISORY:To protect your investment and ensure a lasting repair on these high-value vehicles, the following steps are mandatory.

1. Check for System Contamination: If the old air compressor has failed, it has likely released desiccant dust into the air lines. This contamination is lethal to the fine tolerances of the new valve block and WILL cause immediate failure. The entire air line system MUST be flushed clean before installing this part.

2. Perform a Thorough Leak Test: After installation, use a soapy water solution to meticulously check every air line connection at the valve block. A secure, airtight seal is non-negotiable.

Key Features & Benefits:

• Flagship Application: Specifically designed for the Audi A8 (D4) and Bentley Mulsanne platforms for a perfect fit and OEM-level performance.

• Restores Majestic Ride: Cures sagging and leaks, returning your vehicle to its proper stance and comfort level.

• Clears System Faults: The correct solution to extinguish dashboard and MMI warnings related to the air suspension.

• Protects the Air Compressor: By creating a perfect seal, it prevents the compressor from overworking, saving you from a much more expensive repair down the road.

• Direct-Fit Replacement: Engineered to be a plug-and-play replacement for the original part, with no modifications needed.

Product Specifications

Vehicle Compatibility

This valve block is a direct fit for the following models equipped with factory air suspension:

• Audi A8 / A8L (D4, 4H) | 2009 - 2017

• Audi S8 (D4, 4H) | 2012 - 2017

• Bentley Mulsanne | 2009 - 2020

Important Exclusion Note: This part will NOT fit the Audi A6 (C7/4G) or the older Audi A8 (D3/4E). Please verify your vehicle model and part number before ordering.

Replaces OEM Part Numbers

This unit is a direct, interchangeable replacement for the following original equipment part numbers:

• 4H0 616 013 A / 4H0616013A

• 4H0 616 013 B / 4H0616013B (Updated Version)