Description
The ContiTech AS8091 is a rolling-lobe air spring for heavy-duty truck and trailer suspensions, engineered for stable ride height, low natural frequency, and high load capacity. Direct replacement for Firestone W01-358-8091, Goodyear 1R14-171, Hendrickson C-20901 / S-20901, and Paccar AS80910 — commonly fitted to Hendrickson Intraax air-ride trailer suspensions.
Specifications
| Manufacturer | Continental ContiTech |
|---|---|
| Part Number | AS8091 (also marked 64421 / 11 10.5A-16 P 523) |
| Style | Rolling Lobe |
| Compressed Height | ~5.10″ |
| Extended Height | ~19.30″ |
| Top Plate Diameter | 11.31″ |
| Maximum Diameter | ~14.1″ |
| Bottom Plate Diameter | 10.16″ |
| Bottom Plate Alignment | Parallel |
| Load Rating @ 100 psi | ~10,250 lb |
| Weight | 16.8–19 lb |
Cross References
This air spring replaces or is equivalent to the following part numbers:
- Firestone: W01-358-8091
- Goodyear: 1R14-171
- Hendrickson: C-20901, S-20901
- Meritor: A2258P1576
- Paccar / TRP: AS80910
- Automann: AB1DK28E-8091
- HDValue: HDV8091
- World American: WA01-8091
- Triangle: AS-8523
- Navistar / Fleetrite: 1R14-242
- Taurus: 6398
Applications
This rolling-lobe air spring is used on Hendrickson Intraax and similar heavy-duty trailer / tractor air-ride suspensions, including:
- Hendrickson Intraax AANT / AAL series trailer suspensions
- Trailer air-ride suspensions calling for Firestone W01-358-8091
- Tractor rear air-ride suspensions on Kenworth, Peterbilt, Freightliner, and Mack trucks specifying this air spring
Verify your existing air spring’s plate diameters, mounting orientation, and load rating before ordering. Air springs should be replaced as a matched pair on the same axle for balanced ride height.
