Cabin / Pollen Filters. OEM Quality Cabin Filter. In the vast majority of cases, there is no need to flush the engine and flushing can be harmful. What can happen is the flush can loosen harmless deposits in the engine, but then not remove them.
Bosch Activated Carbon Cabin Pollen Air Filter 1987432336 R2336 OE for BMW
Bosch R2537 Activated Carbon Cabin Filter, Replacement Filter - Against Unpleasant Smells, Pollen and Dust for Cleaner Air Inside the Vehicle
Bosch R2597 Activated Carbon Cabin Filter, Replacement Filter - Against Unpleasant Smells, Pollen and Dust for Cleaner Air Inside the Vehicle
Bosch R2397 Activated Carbon Cabin Filter, Replacement Filter - Against Unpleasant Smells, Pollen and Dust for Cleaner Air Inside the Vehicle
Bosch R5557 Activated Carbon Cabin Filter, Replacement Filter - Against Unpleasant Smells, Pollen and Dust for Cleaner Air Inside the Vehicle
Bosch R2543 Activated Carbon Cabin Filter, Replacement Filter - Against Unpleasant Smells, Pollen and Dust for Cleaner Air Inside the Vehicle
