Arnott C-3540 Air Spring to Coil Spring Conversion Kit - Front and Rear

Arnott C-3540 Coil Spring Conversion Kit

Arnott C-3540 converts the factory air suspension on select Audi A8 and S8 models to a steel coil spring setup. It is built for drivers who want a direct suspension changeover with an electronic bypass module to eliminate dashboard suspension warning lights.

Key Features

• Converts front and rear air suspension to passive coil springs
• Fits 2004-2010 Audi A8 Quattro, front and rear
• Fits 2007-2010 Audi S8, front and rear
• Strut assemblies use coil springs made from American steel
• Includes Arnott's patented Electronic Bypass Module (EBM) for suspension warning light control
• Standard replacement suspension grade with black steel compression springs
• US designed and assembled

Detailed Description

Arnott C-3540 is a coil spring conversion kit for the 2004-2010 Audi A8 (D3) platform and the 2007-2010 Audi S8. It replaces the original front and rear air suspension system with steel coil spring strut assemblies, giving the vehicle a passive suspension configuration while retaining proper electronic fault management through the included bypass module. This part number, C-3540, is built around standard replacement components and American steel spring material for a straightforward suspension conversion on Audi A8 Quattro and Audi S8 applications.

This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

Common Issues Addressed

• Air spring leakage at the front or rear suspension
• Compressor cycling caused by failing air suspension components
• Dashboard suspension warning lights after air system faults
• Uneven ride height from worn air suspension parts
• Costly repeat repairs on aging air suspension systems

Installation Notes and Tips

Verify vehicle fitment by year, model, and suspension position before installation. This kit is intended for front and rear conversion on the listed Audi applications, and the Electronic Bypass Module is used to turn off suspension warning lights after the air system is removed. Follow factory service procedures for suspension disassembly, torque specifications, and post-installation inspection.

Quality Assurance

Arnott designs and assembles this kit in the United States and uses steel spring components for standard replacement service. The C-3540 includes Arnott's patented Electronic Bypass Module, engineered to manage the suspension warning indicator after conversion.