Description
Fleetguard AF27688 is a primary cylindrical axial-seal air filter engineered for Kenworth T660 and other Class 8 trucks using a Donaldson-style 18″ air cleaner housing. As genuine Cummins Filtration, it is the OE replacement for Paccar P611696, with a verified axial-seal interface that prevents bypass and crosses to Donaldson P616056, Baldwin CA5500, and Wix 49456.
Signs You Need a New Air Filter
- Reduced engine power or sluggish acceleration under load
- Decreased fuel economy without other explanation
- Black smoke from the exhaust stack
- Air filter restriction indicator illuminated
- Visible damage, soot saturation, or oil contamination on the media
Specifications
| Manufacturer | Fleetguard (Cummins Filtration) |
|---|---|
| Part Number | AF27688 |
| Part Type | Primary Cylindrical Axial-Seal Air Filter |
| Overall Length | 17.35 in (440.69 mm) |
| Outside Diameter | 9.96 in (253 mm) |
| Seal Style | Axial |
| Engine Compatibility | Kenworth T660 (Cummins ISX, ISM) |
Cross References
This air filter replaces or is equivalent to the following part numbers:
- Paccar: P611696, D371009200
- Donaldson: P616056
- Baldwin: CA5500
- Wix: 49456
- Carquest: 83456
- Luber-Finer: LAF6116
- NAPA: 9456
- Fram: CA10738
Applications
This primary air filter fits the air cleaner housings on the following trucks:
- Kenworth T660 (Cummins ISX, ISM, 2008-2017)
- Kenworth T700 (Cummins ISX, 2010-2014)
- Class 8 vocational and on-highway trucks using Donaldson 18″ axial-seal housings
Verify your air cleaner housing size and seal style before ordering to confirm fitment.









