Description
The World American WA01-9921C is a rolling-lobe air spring for trailer suspensions originally equipped with Holland 90557117 (also Neway 90557117) or Watson & Chalin AS-0090. It also replaces Firestone W01-358-9921 and ContiTech AS9921.
Specifications
| Manufacturer | World American |
|---|---|
| Part Number | WA01-9921C |
| Part Type | Air Spring (Rolling Lobe) |
| Design Height | 13.5 in |
| Min / Max Height | 6.5 in / 22.0 in |
| Maximum Diameter | 12.6 in |
| Load Rating @ 80 psi | 5,680 lb |
| Load Rating @ 100 psi | 7,100 lb |
| Top Plate | 9 in dia, 2 holes, 5.5 in C-to-C |
| Bottom Plate | 9.53 in dia, 1 hole, 2.25 in C-to-C, parallel alignment |
| Natural Frequency | 63 Hz |
Cross References
This part replaces or is equivalent to the following part numbers:
- Holland: 90557117
- Neway: 90557117
- Watson & Chalin: AS-0090
- Firestone: W01-358-9921, 9921
- ContiTech (Continental): AS9921, 9 10-17.5 P 443, 64402
- Goodyear: 1R12-502, 1R12-503
- Meritor: FS9921, RFS9921
- Haldex: CS112502
- Paccar Parts: AS99210
- Dayton Parts: 352-9921
- Euclid: E-FS9921
- HDValue: HDV9921
- Triangle Air Springs: AS-8443, 8443
- Also known as: AB1DK23P-9921, 10-99921
Applications
This air spring fits trailer suspensions originally equipped with Holland 90557117, Neway 90557117, or Watson & Chalin AS-0090. Typical platforms include:
- Holland / SAF-Holland Neway air-ride trailer suspensions
- Watson & Chalin trailer air-ride suspensions
Verify your existing air spring part number, plate dimensions, and stud pattern before ordering.









