W01-358-9807 Firestone/Air ride suspension system 566243142 Goodyear/air bag 1R12-1047 AS9807 AS-8874 Air spring
OEM Reference
Firestone | W01-358-9807 | FLEETPRIDE | AS9807 |
| 1T15M-2 | AUTOMANN | 1DK23I-9807 |
Goodyear | 566243142 | SAF HOLLAND | 90557372 |
| 1R12-1047 | | 50857000 |
TRIANGLE | AS-8874 | | |
TRP | AS98070 | | |
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
Air Spring Air Fitting Size | Combination Stud/Air Inlet Stud Outside Thread is 3/4-16 ; Studs Inside Thread (Air Inlet) is 1/4 N.P.T. |
Air Spring Compressed Height | 4.7 in. |
Air Spring # of Lobes | 1 Solid Sleeve |
Air Spring Type | 1T - Reversible Sleeve |
Bead Plate (Top) & Deflated Bellows O.D. | 9 and 10.12 in. |
Bead Plate (Top) Mounting Bolts Dimension Center to Center | 5.5 in. |
Diameter | 10.12 in. |
Extended Height Deflated | 14 in. |
Finished Weight | 11.0 lbs |
Piston (Bottom) Mounting Bolt Dimensions Center to Center | None (Position Pin) |
Piston Height | 2.80 in. |
Bead Plate Top Diameter | 9 in. |
Bead Plate Bottom Diameter | 9.5 in. |
Application | Holland 90557372, Holland 50857000, |
Bottom Bead Plate Hardware Key | Bold or Stud 1/2-13 |
Top Bead Plate Hardware Key | Bold or Stud 1/2-13 |
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.