Description
Firestone W01-358-9039 reversible-sleeve trailer air spring for Holland Neway AR-41, AR-45, and AR-50 suspensions. Bellows 1T15M-0 with 9655 piston and 3235 top plate. Rated 6,480 lb at 90 psi, design ride height 6.5–7.5 in. Direct replacement for SAF Holland 90557085, Paccar AS90390, Hendrickson S-2064, and Goodyear 1R12-095.
Signs You Need a New Trailer Air Spring
- Trailer sagging or sitting unevenly when loaded
- Visible cracks, dry rot, or weather checking on the bellows
- Air leaks — suspension cannot hold ride height
- Excessive trailer bounce or harsh ride quality
- Ride height outside the 6.5–7.5 in spec
Specifications
| Manufacturer | Firestone |
|---|---|
| Part Number | W01-358-9039 |
| Part Type | Reversible Sleeve Air Spring |
| Bellows Number | 1T15M-0 |
| Extended Height | 12.20 in |
| Compressed Height | 4.80 in |
| Design Ride Height | 6.5–7.5 in |
| Top Plate Number | 3235 |
| Top Plate Diameter | 9.00 in |
| Piston Number | 9655 |
| Piston Diameter | 9.50 in |
| Load @ 90 PSI | 6,480 lb |
| Maximum Pressure | 100 PSI |
| Warranty | 2 Years |
Cross References
This air spring replaces or is equivalent to the following part numbers:
- Firestone: 9039, 1T15M-0
- SAF Holland / Neway: 90557001, 90557011, 90557023, 90557085, 90044199, 90054234
- Hendrickson: S-2064, S-11650, B-2064, B-11650, T-6-295
- Goodyear: 1R12-095, 1R12-097
- ContiTech: 64260, 9 10-10 P 311, AS9039
- Watson & Chalin: AS-0012
- Hutchens: H-9424-01, H-2007
- Ridewell: 1003589039C, 1013589039C
- Blue Bird: 300961250, 12TA12
- PACCAR: AS90390
- Dayton: 352-9039, 452-9039L
- Meritor: FS9039, 200457
- Triangle: 8311
- Automann: AB1DK23F-9039
- Navistar: 554766C1
- Volvo: 3130492
Applications
This air spring fits the following suspension systems and chassis:
- SAF Holland / Neway AR-41 trailer suspension (original design)
- SAF Holland / Neway AR-45 and AR-45-1 trailer suspension
- SAF Holland / Neway AR-50 trailer suspension (all variants)
- Hendrickson trailer suspensions using S-2064 / S-11650
- Watson & Chalin, Hutchens, and Ridewell trailer suspensions calling out this part
- Blue Bird Wanderlodge motorhomes and transit buses
- Flxible and Orion transit buses
Verify your suspension model and OEM part number before ordering to confirm fitment.
