Description
World American WA01-9026C is a rolling-lobe drive-axle air spring that replaces Firestone W01-358-9026 (1T15M-6), Peterbilt 03-06213 / 03-07111, Goodyear 1R12-567, and ContiTech 9 10-16 P 393 on Peterbilt Low Air Leaf rear suspensions. Built for the 119 BBC / 127 BBC Class 8 chassis with a 13.50″ design height, parallel two-bolt 9.00″ top plate, composite single-stud bottom plate, and 7,160 lb load capacity at 100 psi.
Signs You Need a New Air Spring
- Truck riding lower at the drive axle or sagging on one side at rest
- Excessive bouncing, harsh impacts, or porpoising at highway speed
- Air compressor cycling more often to hold ride height
- Visible bellows cracking, dry rot, or audible leak from the air port
- Uneven tire wear on the drive axle from a sagging bag
Specifications
| Manufacturer | World American |
|---|---|
| Part Number | WA01-9026C |
| Part Type | Drive Axle Air Spring (Rolling Lobe) |
| Spring Type | Rolling Lobe |
| Firestone Bellows | 1T15M-6 |
| Design Height | 13.50″ |
| Maximum Height | 21.60″ |
| Minimum Height | 6.70″ |
| Maximum Diameter | 12.60″ |
| Top Plate | 9.00″ dia, 2-bolt, 6.20″ CTC |
| Bottom Plate | 10.31″ dia, 1-stud, parallel, composite |
| Load Rating @ 80 PSI | 5,710 lbs |
| Load Rating @ 100 PSI | 7,160 lbs |
| Natural Frequency | 70 Hz |
| Suspension | Peterbilt Low Air Leaf |
Cross References
This drive axle air spring replaces or is equivalent to the following part numbers:
- Peterbilt / Paccar: 03-06213, 03-07111, 306213, AS90260
- Firestone: W01-358-9026, 9026, 1T15M-6
- Goodyear: 1R12-567, 1R12-907
- ContiTech: 9 10-16 P 393, 91016P393
- Triangle: AS-8393, 8393
- Meritor / Euclid: FS9026, E-FS9026
- HD Value: HDV9026
- Automann: AB1DK23K-9026
- Dayton: 352-9026
- Torque: TR9026
- Sampa: SP559026-KP
Applications
This rolling-lobe air spring fits Peterbilt Low Air Leaf drive-axle suspensions on:
- Peterbilt 330 (1997–2004)
- Peterbilt 335 (1997–2004)
- Peterbilt 357 (1997–2004)
- Peterbilt 362 (1997–2000)
- Peterbilt 377 (1997–2000)
- Peterbilt 378 (1988–2004)
- Peterbilt 379 (1987–2004) — 119 BBC and 127 BBC only
- Peterbilt 385 (2000–2004)
Verify Peterbilt model, BBC length (119 vs. 127 on 379s), and suspension type (Low Air Leaf vs. Air Trac) before ordering. Replace drive-axle air springs in pairs to keep the suspension level.
