Description
Automann AB1DK20D-9584 rolling lobe air spring with integrated AB9471P bracket, a direct aftermarket replacement for Firestone W01-358-9584 (1T15L-1.5 bellows) and Holland / Neway 90557250 on trailer-style rear suspensions. Compact 8.00″ design height fits low-clearance suspensions; rated 5,100 lb at 80 PSI and 6,400 lb at 100 PSI with an internal bumper.
Signs You Need a New Air Spring
- Suspension sagging or sitting lower on one side
- Visible cracks, dry rot, or chafing on the rubber bellows
- Audible air leak at the bellows or top plate
- Suspension dump / refill cycles run more frequently than normal
- Harsh ride or excessive body roll despite correct ride height
Specifications
| Manufacturer | Automann |
|---|---|
| Part Number | AB1DK20D-9584 |
| Part Type | Rolling Lobe Air Spring (with bracket) |
| Firestone Bellows Number | 1T15L-1.5 |
| Design Height | 8.00 in |
| Maximum Height | 14.40 in |
| Minimum Height | 4.50 in |
| Maximum Diameter | 11.40 in |
| Top Plate | 9.00 in dia, 2 studs at 5.50 in C-to-C |
| Bottom Plate | 9.53 in dia, composite (plastic), 1 hole |
| Load Rating @ 80 PSI | 5,100 lb |
| Load Rating @ 100 PSI | 6,400 lb |
| Natural Frequency | 80 CPM |
| Bumper | Internal |
| Bracket | AB9471P (integrated) |
Cross References
This part replaces or is equivalent to the following part numbers:
- Firestone: W01-358-9584, 9584
- Holland / Neway: 90557250, 90557224, 90557411
- ContiTech: 68675
- Meritor / Euclid: FS9584, E-FS9584
- Dayton: 352-9584
- Torque: TR9584
- World American: WA01-9584C
Applications
This rolling lobe air spring fits trailer and truck suspensions originally specified with any of the cross-referenced part numbers, including:
- Holland / Neway trailer suspensions using 90557250
- Neway suspensions using 90557224 (low-clearance fitting)
- Neway suspensions using 90557411
- Other trailer and truck rear suspensions specified with W01-358-9584
Verify your existing part number and bracket configuration before ordering to confirm fitment.
