Description
ContiTech AS9541 (bellows 9 9-10 S 861) is the OE rolling-lobe drive-axle air spring on Paccar Airglide 200, 400, 460, and 690 suspensions, replacing Kenworth C81-1005 / C81-1004 / AS95410, Firestone W01-358-9541 / W01-358-9547, and Triangle AS-8861. As Continental AG’s heavy-duty division and a Tier 1 supplier to Paccar, ContiTech ships this bag with the same plastic Type-P piston and parallel two-bolt mount used at the factory, rated 6,280 lb at 100 psi with a 7.00″ design height.
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
Specifications
| Manufacturer | ContiTech (Continental AG) |
|---|---|
| Part Number | AS9541 (66111) |
| ContiTech Bellows | 9 9-10 S 861 |
| Firestone Bellows | 1T15LA-0 |
| Firestone Top Plate / Piston | 3174 / 9569 |
| Part Type | Drive Axle Air Spring (Rolling Lobe) |
| Base Type | Plastic (Type P) |
| Design Height | 7.00″ |
| Extended Height | 12.30″ |
| Compressed Height | 3.90″ |
| Bottom Plate Diameter | 8.82″ |
| Maximum Diameter | 11.50″ |
| Load Rating @ 80 PSI | 5,020 lbs |
| Load Rating @ 100 PSI | 6,280 lbs |
| Bottom Plate Alignment | Parallel |
Cross References
This drive axle air spring replaces or is equivalent to the following part numbers:
- Kenworth / Paccar: C81-1005, C81-1004, AS95410
- Peterbilt: C81-1005
- Firestone: W01-358-9541, W01-358-9547, 9541, 9547
- ContiTech: 66111, 66329, 68357, 69901, 9 9-10 P 861
- Triangle: AS-8861, AS-8859, 8861
- Automann: AB1DK20H-9541, AB1DK20G-9547
- HD Value: HDV9541
- Meritor: FS9541
- World American: WA01-9541C
- Dayton: 352-9541
Applications
This rolling-lobe air spring fits the following Paccar (Kenworth / Peterbilt) drive-axle suspensions:
- Kenworth Airglide 200 (05/05/2003 build date or later)
- Kenworth Airglide 400 (40,000 lb tandem)
- Kenworth Airglide 460 (46,000 lb tandem)
- Kenworth Airglide 690 (69,000 lb tridem)
- Peterbilt tractors and vocational chassis with Paccar Airglide drive-axle suspensions
Representative Kenworth chassis using these suspensions:
- Kenworth T680, T880, W900, W990, T440, T470
- Peterbilt 386, 389, 567, 579 with Paccar Airglide
Verify OEM number (C81-1005 vs. C81-1004) and Airglide variant on your build sheet before ordering. Replace drive-axle air springs in pairs to keep the suspension level.
