Air filter Citroen C4 I 9HX (1.6 HDi) — Mann, Mahle, Filtron
Air filter for Citroen C4 I 9HX (1.6 HDiL, 2004–2010) — dimensions, Mann, Mahle, Filtron, WIX and Hengst part numbers, and replacement interval.
Technical Specifications
| Parameter | Value |
|---|---|
| Make / Model | Citroen C4 I |
| Engine Code | 9HX |
| Displacement / Fuel | 1.6 HDiL diesel |
| Production Years | 2004–2010 |
| Filter size | 275×175×28 mm |
| Replacement interval | 15 000 km |
Compatible Air Filters
| Brand | Part Number |
|---|---|
| Mann-Filter | Mann C28850/2 |
| Mahle / Knecht | Mahle LX1650 |
| Filtron | Filtron AP121 |
| WIX Filters | WIX WA6395 |
| Hengst | Hengst E812L |
Replacement Interval
Replace the air filter every 15 000 km or once a year, whichever comes first.
In urban environments with high dust levels, replace more frequently — every 10,000–12,000 km.
Signs of a Clogged Air Filter
- Increased fuel consumption of 5–10%
- Reduced acceleration performance
- Black smoke from the exhaust (diesel engines)
- Fault code P0171/P0174 (lean mixture) on petrol engines
- Visibly dark, dirty filter element on inspection
FAQ
Which air filter fits Citroen C4 I 9HX?
Mann Mann C28850/2, Mahle Mahle LX1650, Filtron Filtron AP121. Filter dimensions: 275×175×28 mm.
How often should the air filter be changed on Citroen C4 I?
Every 15 000 km or annually. On unpaved or dusty roads, replace every 8,000–10,000 km.
Can the air filter be cleaned instead of replaced?
Disposable paper filters (Mann C28850/2, Mahle LX1650) are not washable. Washing destroys the filter medium and compromises filtration. Always fit a new filter.
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