Description
Premium aftermarket replacement primary air filter from Fleetguard. The AF979 is a round element measuring 10.40 in outside diameter by 16.51 in tall, replacing International 1661755C91. It is the primary element that pairs with the AF987 safety filter on International 4700 and 4800 chassis.
Specifications
| Manufacturer | Fleetguard |
|---|---|
| Part Number | AF979 |
| Part Type | Primary Air Filter, Round |
| Engine Compatibility | International / Navistar medium duty diesel |
| Outside Diameter | 10.402 in (264.2 mm) |
| Inside Diameter | 6.048 in (153.6 mm) |
| Height | 16.51 in (419.4 mm) |
| Matching Safety Element | AF987 |
Cross References
This part replaces or is equivalent to the following part numbers:
- International: 1661755C91
- Navistar: 1623047C91, 1680058C91, 470185C92, 998054C91
- Donaldson: P181028, P182028, P185028
- Baldwin: PA2521
- Wix: 42253
- Luber-finer: LAF9545
Applications
This primary air filter fits:
- International 4700 and 4800 medium duty chassis
- Peterbilt applications using this element size
Verify fitment by measuring your existing element before ordering. This is the primary (outer) element — the matching safety element is Fleetguard AF987 and is sold separately. A safety element is normally replaced every second or third primary change, or any time the primary is found damaged.









