Durable Rowe Truck Suspension Air Spring ASC1400HL Firestone W01-358-2119 Air Bag

1. Stud

A permanent part of the bead palte assembly, used to attach the air springs to the suspension.

2. Combo Stud

Combination mounting stud and air fitting.

3. Blind Nut

A permanent part of the bead plate assembly, used to attach the air spring to the suspension.

4. Air Fitting Hole

A tapped hole that provides an air entrance for the part.

5. Bead Plate

Steel plate, permanently crimped to the bellows to form an airtight assembly.

6. Bellows

The air spring bellows is a flexible, airtight composite of rubber and reinforced fabric, which allows the assembly to roll up and down, providing an air-cushioned spring effect within the suspension.

7. Bumper (Option)

A solid, molded rubber fail-safe device used on many suspension applications. Prevents excessive damage to vehicle and suspension in the case of sudden air pressure loss.

8. Piston

The lower section of 1T style of air spring made from aluminum, steel, or fiber reinforced composite. Provides lower mounting arrangement for the air spring in the form of tapped holes or studs.

9. Piston Bolt

Attaches the piston to the bellows assembly. Extended on the bottom of the piston, in some cases, to serve as a means of attaching the spring to the suspension.

10. Girdle Hoop

A ring molded into the bellows of the convoluted type air spring.