Arnott C-2956 Air Spring to Coil Spring Conversion Kit - Front and Rear

Mercedes-Benz S-Class Air Suspension Conversion

Arnott C-2956 is an air spring to coil spring conversion kit for select 2007-2013 Mercedes-Benz S-Class W221 vehicles equipped with AIRMATIC and 4MATIC. It converts the suspension system to a conventional coil spring setup while retaining a smooth, comfortable ride through custom-tuned front and rear shock absorbers.

Built for the Mercedes-Benz S550, S450, S350, and S500 applications listed below, this NEW Arnott suspension conversion kit provides a direct path away from failing air suspension components and dash warning lights.

Key Features

• Air spring to coil spring conversion for Mercedes-Benz W221 chassis vehicles
• Fits front and rear suspension positions on listed applications
• Steel compression springs with standard replacement grade construction
• Black spring finish
• Custom-tuned shock absorbers for ride comfort
• Patents pending computer module included to eliminate suspension dash panel error lights
• Arnott NEW product line for the C-2956 application

Detailed Description

Arnott C-2956 is engineered for 2007-2013 Mercedes-Benz S-Class models with AIRMATIC and 4MATIC, replacing the original air suspension system with a conventional coil spring arrangement. The kit is designed for drivers who want to address aging air suspension components without replacing individual air struts at dealership pricing. Arnott’s NEW product line focuses on complete suspension conversion solutions, and this kit combines steel springs, passive standard replacement components, and tuned dampers to maintain a controlled ride on the Mercedes-Benz S-Class platform.

This part number, C-2956, is a direct-fit conversion solution for the listed Mercedes-Benz S-Class applications and is built around the vehicle’s original suspension layout. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

What It Helps Solve

• Air suspension compressor cycling caused by leaking air springs
• Vehicle sag from worn or failed air suspension components
• Suspension dash warning lights related to AIRMATIC faults
• Uneven ride height on Mercedes-Benz S-Class W221 models
• High replacement cost for individual air struts at the dealership

Installation Notes and Tips

Compatible With vehicles equipped with Air Suspension and 4MATIC as listed in the fitment data. Verify the chassis and suspension configuration before installation. The included computer module is intended to address suspension warning indicators after conversion. Professional installation is recommended for proper suspension setup and system verification.

Quality Assurance

Arnott manufactures this conversion kit as a standard replacement solution for the listed Mercedes-Benz applications. The design uses steel spring construction, passive suspension components, and application-specific tuning to support consistent operation after conversion.

• Fits 2007-2013 Mercedes-Benz S550, front and rear
• Fits 2008-2011 Mercedes-Benz S450, front and rear
• Fits 2012-2013 Mercedes-Benz S350, front and rear
• Fits 2013 Mercedes-Benz S500, front and rear