(Cab or Seat Springs)
Firestone cab/seat air spring identification:
The easiest way to determine a Firestone cab or seat spring is to find the part # (Figure #1, AON= Airide Order Number) which is usually either stamped into the top cap or the metal “band clamp” (shown as #7 on Figure #2). This number will usually start with a W02-358-7xxx.
If you are unable to find the AON # then you will need to obtain the cap and piston drawing numbers, the color of the Firestone logo and the measurements between the band clamps.