Arnott C-3620 Air Spring to Coil Spring Conversion Kit - Front and Rear

Arnott C-3620 Coil Spring Conversion Kit for LR4

Convert the air suspension on a 2010-2016 Land Rover LR4 to a conventional coil spring setup with the Arnott C-3620. This conversion kit is built for front and rear use on the LR4 and includes an electronic bypass module to prevent dash panel error lights after the suspension change.

Key Features

• Fits 2010-2016 Land Rover LR4, front and rear
• Air spring to coil spring conversion kit for passive suspension operation
• Steel springs with black finish
• Shock absorbers are specially valved by Arnott for ride comfort and handling balance
• Includes new bump stops and dust boot
• Patented Electronic Bypass Module (EBM) helps eliminate suspension warning lights
• Standard replacement grade for direct-service applications

Product Details

The Arnott C-3620 is a suspension conversion solution for LR4 owners replacing the factory air spring system with coil springs. It uses steel compression springs and passive suspension components to simplify the vehicle’s suspension layout while maintaining a controlled ride. The specially valved shock absorbers are tuned to support the comfort and handling characteristics expected from a Land Rover LR4. The part number C-3620 is also identified by Arnott for this application when searching for a Land Rover LR4 coil spring conversion kit.

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

Common Issues This Kit Can Address

• Air suspension warning lights on the dash after air system failure
• Need to replace a leaking or unreliable air spring system
• Uneven ride height caused by failing air suspension components
• Suspension service needs where a coil spring conversion is preferred
• Ride quality concerns tied to worn shocks, bump stops, or dust protection

Installation Notes and Tips

Fits 2010-2016 Land Rover LR4, front and rear. The included electronic bypass module is designed to simplify operation after conversion and help prevent dashboard error messages. Verify vehicle configuration before installation and follow the service procedure for removing the original air suspension components and installing the coil spring conversion hardware. The part number C-3620 should be matched to the vehicle’s suspension layout before ordering.

Quality Assurance

Arnott designs this conversion kit as a standard replacement suspension solution for the LR4 platform. The kit uses steel springs and application-specific shock valving to support consistent operation after converting from air suspension to coils.