Description
Cab air spring (sleeper / cab suspension airbag) for Kenworth AeroCab T600, T660, T800, W900 and Peterbilt Unibilt sleepers. World American WA1104K002 is a direct aftermarket replacement for Paccar 1104K002 and Firestone W02-358-7109; load-rated to 1094 lb at 100 PSI with a 4″ design height (2.4″ min, 6.5″ max).
Signs You Need a New Cab Air Spring
- Cab sags, leans, or settles unevenly when parked overnight
- Audible air leak under the cab, escalating with time after shutdown
- Visible cracking, blister, or dry-rot on the rubber bag
- Rough or banging cab ride over expansion joints with proper system pressure
Specifications
| Manufacturer | World American |
|---|---|
| Part Number | WA1104K002 |
| Part Type | Cab Air Spring (sleeve-style) |
| Design Height | 4.0 in |
| Minimum Height | 2.4 in |
| Maximum Height | 6.5 in |
| Maximum Diameter | 2.99 in |
| Top Plate Diameter | 2.99 in |
| Bottom Plate Diameter | 2.89 in |
| Load Rating | 1094 lb @ 100 PSI / 874 lb @ 80 PSI |
| Natural Frequency | 115 cpm |
| Bottom Plate Material | Composite plastic |
Cross References
This cab air spring replaces or is equivalent to the following part numbers:
- Paccar: 1104K002, T81-1000
- Kenworth: 1102-K077
- Firestone: W02-358-7109, W02-600-7109, W02-600-7121, FS7109, FS7121
- Continental-ContiTech: 69624, 68037, SC29-Y109, AS7109
- Holland (SAF-Holland): G2297109600
- Mack: 3040-W023587109
- Freightliner: FIW023587109, TDAFS7109
Applications
This cab air spring fits the following sleeper / cab air suspensions:
- Kenworth AeroCab — T600, T660, T800, W900 (1999–present)
- Peterbilt Unibilt sleepers (379, 389, 387) using the Paccar 1104K002 / Firestone 7109 spec
Verify cab/sleeper model and the existing air spring height & plate spacing before ordering. Replace cab springs as a pair when one fails.
