Description
Genuine Firestone W01-544-9673 rolling-lobe air spring for Kenworth Airglide 100 rear suspension — the current Firestone catalog number for the air spring previously listed as W01-358-9616 / 9616. Direct replacement for OEM Kenworth K303-16 and Goodyear 1R11-242, with a parallel two-stud P-style bottom plate that drops onto Airglide 100 saddles without modification.
Signs You Need a New Air Spring
- Truck sits unevenly or sags on one side at ride height
- Cracks, blisters, or chunks missing from the rubber bellows
- Audible air leak from the bellows or top plate
- Loss of ride height that the leveling valve can no longer correct
Specifications
| Manufacturer | Firestone |
|---|---|
| Part Number | W01-544-9673 (also W01-358-9616 / 9616) |
| Part Type | Rolling Lobe Air Spring (tractor) |
| Design Height | 7.5 in |
| Min / Max Height | 5.1 in / 12.9 in |
| Maximum Diameter | 12.6 in |
| Load at 100 psi | 7,000 lb |
| Load at 80 psi | 5,570 lb |
| Bottom Plate | P-style, parallel, 9.53 in dia., 2 studs, 4.12 in C-C |
| Natural Frequency | 81 cpm |
| Condition | New — Genuine Firestone |
Cross References
This air spring replaces or is equivalent to the following part numbers:
- Firestone: W01-544-9673, W01-358-9616, 9616
- Kenworth: K303-16
- Goodyear: 1R11-242
- ContiTech: 9 9-12 P 515 (9912P515), 64256, 69655
- Meritor: FS9616
- Euclid: E-FS9616
- Paccar Parts: AS96160
- Dayton Parts: 352-9616
- Triangle Air Springs: 8515, AS-8515
- World American: WA01-9616
Applications
This air spring fits the rear suspension on:
- Kenworth Airglide 100 tractors specifying the K303-16 air spring
- Other heavy-duty tractor and trailer suspensions calling for Firestone W01-358-9616 / W01-544-9673 with a 7.5 in design height and 7,000 lb @ 100 psi capacity
Confirm the bottom-plate stud spacing (4.12 in C-C) and bellows design height (7.5 in) match the existing air spring before ordering — visually similar Firestone air springs differ in stud pattern and load rating.
