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Air filter BMW 3 Series G20 B47D20 (2.0) — Mann, Mahle, Filtron

Air filter for BMW 3 Series G20 B47D20 (2.0L, 2019–2025) — dimensions, Mann, Mahle, Filtron, WIX and Hengst part numbers, and replacement interval.

Technical Specifications

ParameterValue
Make / ModelBMW 3 Series G20
Engine CodeB47D20
Displacement / Fuel2.0L diesel
Production Years2019–2025
Filter size350×220×35 mm
Replacement interval20 000 km

Compatible Air Filters

BrandPart Number
Mann-FilterC 26 100
Mahle / KnechtLX 3710
FiltronAP 238
WIX FiltersWA9987
HengstE612L

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 BMW 3 Series G20 B47D20?

Mann C 26 100, Mahle LX 3710, Filtron AP 238. Filter dimensions: 350×220×35 mm.

How often should the air filter be changed on BMW 3 Series G20?

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 (C 26 100, LX 3710) are not washable. Washing destroys the filter medium and compromises filtration. Always fit a new filter.