Coil Conversion Kits

What is included in a coil conversion kit?

A coil conversion kit replaces air springs or air struts with coil springs and, depending on the model, new shock absorbers. For cars where the control system would otherwise show a fault, there is an electronic module that switches off the warning light. Exactly what is included is stated in the product description.

Pros and cons

The advantage is a simpler system without a compressor, valve block and air springs that can leak. The drawback is that the car loses its levelling function and adjustable ride height, and ride comfort may feel different. If you often carry heavy loads or tow, the air suspension may be worth keeping.

Frequently asked questions

Do I need an electronic module?

On cars where the control unit monitors the air suspension, a module is normally needed to avoid fault codes and warning lights. The product description shows whether the module is included.

Can I convert only the rear axle?

Yes. For cars with rear-only air suspension there are kits for the rear axle, for example for the Mercedes E-Class Estate.

Does the conversion affect inspection or insurance?

Rules differ between countries. Check what applies where the car is registered, and consider informing your insurance company.