Description
World American WA01-8709C is a rolling-lobe parallel air spring for Hendrickson Intraax AA230 23,000-lb trailer suspensions built August 1997 and up. It replaces Hendrickson S-21800 and S-20900, ContiTech AS8709, and Firestone W01-358-8709 with matching plate geometry, design height, and load ratings. Two-bolt top plate, single-stud bottom plate.
Specifications
| Manufacturer | World American |
|---|---|
| Part Number | WA01-8709C |
| Part Type | Rolling Lobe Air Spring (Parallel) |
| Design Height | 10 in |
| Load Rating @ 100 PSI | 9,250 lb |
| Load Rating @ 80 PSI | 7,400 lb |
| Maximum Diameter | 13.9 in |
| Min / Max Height | 4.9 in / 19.3 in |
| Top Plate | 10.2 in dia, 5.5 in C-to-C, 2 holes |
| Bottom Plate | 9.17 in dia, 2.25 in C-to-C, 1 hole, Type A parallel |
| Suspension | Hendrickson Intraax AA230 (23K) |
Cross References
This part replaces or is equivalent to the following part numbers:
- Hendrickson: S-21800, S-20900, S-22045, HKA180
- ContiTech: AS8709, 64645, 101015S453
- Firestone: W01-358-8709, W01-358-8751, 8709
- Goodyear: 1R13-159
- HD Value: HDV8709
- Meritor / Euclid: FS8709, E-FS8709
- Automann: AB1DK25A-8709
- Dayton Parts: 352-8709
- Triangle: 8453, AS-8453
- Batco: 10-98709
Applications
This air spring fits the following suspensions:
- Hendrickson Intraax AA230 23,000-lb trailer suspension (Aug 1997 and up)
- Hendrickson Vantraax 23K trailer suspension (where the OEM bag is S-21800)
Representative trailers using these suspensions:
- Great Dane, Wabash, Utility, Stoughton, and Hyundai dry vans and reefers spec’d with Hendrickson AA230 (1997-current)
- Heavy-duty flatbeds and tankers with Hendrickson Intraax 23K air-ride
Verify suspension model and OEM bag number on the air spring tag before ordering.









