Air filter Audi A4 B8 CAHA (2.0 TDI) — Mann, Mahle, Filtron
Air filter for Audi A4 B8 CAHA (2.0 TDIL, 2007–2015) — dimensions, Mann, Mahle, Filtron, WIX and Hengst part numbers, and replacement interval.
Technical Specifications
| Parameter | Value |
|---|---|
| Make / Model | Audi A4 B8 |
| Engine Code | CAHA |
| Displacement / Fuel | 2.0 TDIL diesel |
| Production Years | 2007–2015 |
| Filter size | 360×200×30 mm |
| Replacement interval | 15 000 km |
Compatible Air Filters
| Brand | Part Number |
|---|---|
| Mann-Filter | Mann C27029/1 |
| Mahle / Knecht | Mahle LX1575/1 |
| Filtron | Filtron AP145/4 |
| WIX Filters | WIX WA9739 |
| Hengst | Hengst E814L |
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 Audi A4 B8 CAHA?
Mann Mann C27029/1, Mahle Mahle LX1575/1, Filtron Filtron AP145/4. Filter dimensions: 360×200×30 mm.
How often should the air filter be changed on Audi A4 B8?
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 C27029/1, Mahle LX1575/1) are not washable. Washing destroys the filter medium and compromises filtration. Always fit a new filter.
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