Description
Rolling lobe air spring for Peterbilt Low Air Leaf and Kenworth AG210L/AG400L suspensions, supporting 5,640 lb at 80 PSI and 7,070 lb at 100 PSI. Direct replacement for Firestone W01-358-8852 (bellows 1T15M-9, top plate 3302, piston 9532), Peterbilt 03-07887, Goodyear 1R12-568, and PACCAR AS88520. World American part number WA01-8852C, backed by a 1-year / 100,000-mile warranty.
Signs You Need a New Air Spring
- Visible cracks, dry rot, or deterioration in the rubber bellows
- Truck sitting lower than normal or uneven side-to-side ride height
- Air leaks or hissing sounds from the suspension system
- Excessive bouncing, harsh ride, or reduced stability under load
Specifications
| Manufacturer | World American |
|---|---|
| Part Number | WA01-8852C |
| Part Type | Air Spring – Rolling Lobe |
| Extended Height | 24.60″ |
| Compressed Height | 6.70″ |
| Design Height | 15.00″ |
| Top Plate Diameter | 9.00″ |
| Top Plate Center-to-Center | 6.20″ |
| Bottom Plate Diameter | 10.31″ |
| Bottom Plate Center-to-Center | 2.25″ |
| Maximum Diameter | 12.60″ |
| Top Plate Holes | 2 |
| Bottom Plate Holes | 1 |
| Bottom Plate Alignment | Parallel |
| Load Rating @ 80 PSI | 5,640 lbs |
| Load Rating @ 100 PSI | 7,070 lbs |
| Natural Frequency | 61 Hz |
| Firestone Bellows Number | 1T15M-9 |
| Firestone Top Plate | 3302 |
| Firestone Piston | 9532 |
| Warranty | 1 Year / 100,000 Miles |
Cross References
This part replaces or is equivalent to the following part numbers:
- Firestone: W01-358-8852, 8852
- Peterbilt: 03-07887, 307887
- Goodyear: 1R12-568, 1R12-1081
- ContiTech: 9 10-19 P 472, 64339
- Triangle: 8472, AS-8472
- Automann: AB1DK23L-8852
- Hendrickson: S-20182, S-23944
- Dayton: 352-8852
- Meritor: FS8852
- PACCAR: AS88520
- Fleetrite: FLT1R12568
Applications
This rolling lobe air spring fits Peterbilt trucks with Low Air Leaf suspensions, including:
- Peterbilt 379 (2005-2007)
- Peterbilt 389 / 389 Glider (2008-2023)
- Peterbilt 386, 387, 388 (2005-2016)
- Peterbilt 567, 579, 587 (2011-Current)
- Peterbilt 365, 367 (2007-Current)
- Peterbilt 330, 335, 337, 340, 348, 357, 378, 384, 385
- Kenworth AG210L, AG400L suspensions
Verify OEM part number and suspension type before ordering to confirm fitment. Air springs must be matched by dimensions and mounting configuration.
