W01-358-9807 Firestone/Air ride suspension system 566243142 Goodyear/air bag 1R12-1047 AS9807 AS-8874 Air spring

OEM Reference

Cross References: 90557306, W01-358-9807, W013589807, W01-358-8882, W013588882, 1R12-1047, 1R121047, S-25912, S25912, 90557372
A cross reference listing means that this air bag may be a suitable replacement for the part numbers listed. Please double check the dimensions and location of mounting holes and stud to be sure the air bag will work in your application.

Product Drawing

Specificions

HOW AIR SUSPENSION WORKS

In place of the spring is a bellow (usually made from rubber) filled with air. Under load, the bellow is compressed, causing a decrease in volume and an increase in pressure.

If more air is pumped in, the bellow is reinstated to its normal volume or, more crucially, its normal height. As an air spring, the increased pressure means increased stiffness, which is necessary for the added weight.

Meanwhile the vehicle’s ride height remains constant.

Air suspension systems now feature in numerous upmarket saloons, sports utility vehicles and station wagons. Some of them have air suspension only at the rear.

The advantage of this is even when the boot (or load bay) is fully laden, the vehicle stays level.

Supporting the air-filled bellows or air suspension are a number of components not present in the regular steel-sprung suspension system.

One of them is an electric or belt-driven compressor to supply air into the bellows when called for. What “instructs” the compressor is a level sensor.