About this part
What it does. K And N Replacement Air Filter K&N 400-33-2488 keeps dust and debris out of the intake so the engine draws clean air.
Symptoms that point to this part
- Reduced fuel economy
- Sluggish acceleration
- Visibly dirty or clogged filter element
Service note. Typically inspected at every service and replaced roughly annually.
Fitment. Catalogued as fitting 2021 BMW M2, 2018–2019 BMW M4, 2018 BMW M6, 2018 BMW M3. Engine, sub-model and trim can narrow fitment further, so check those attributes on the listing before ordering.