Air filter Subaru Forester SK FB25 (2.5) — Mann, Mahle, Filtron
Air filter for Subaru Forester SK FB25 (2.5L, 2018–2023) — dimensions, Mann, Mahle, Filtron, WIX and Hengst part numbers, and replacement interval.
Technical Specifications
| Parameter | Value |
|---|---|
| Make / Model | Subaru Forester SK |
| Engine Code | FB25 |
| Displacement / Fuel | 2.5L petrol |
| Production Years | 2018–2023 |
| Filter size | 290×210×60 mm |
| Replacement interval | 20 000 km |
Compatible Air Filters
| Brand | Part Number |
|---|---|
| Mann-Filter | Mann C35HS |
| Mahle / Knecht | Mahle LX2830 |
| Filtron | Filtron AP131 |
| WIX Filters | WIX WA9756 |
| Hengst | Hengst E1208L |
Replacement Interval
Replace the air filter every 20 000 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 Subaru Forester SK FB25?
Mann Mann C35HS, Mahle Mahle LX2830, Filtron Filtron AP131. Filter dimensions: 290×210×60 mm.
How often should the air filter be changed on Subaru Forester SK?
Every 20 000 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 C35HS, Mahle LX2830) are not washable. Washing destroys the filter medium and compromises filtration. Always fit a new filter.
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