Description
Carbon Filter, Active Charcoal For Citroën C4 And Peugeot 307
This activated carbon filter is designed for use in Citroën C4 and Peugeot 307 ventilation systems. Supplied under Stellantis references including 1502F9 (NFP), the element improves cabin air quality by adsorbing odors and gaseous pollutants while also capturing fine dust and pollen. Ideal for professional workshops and experienced DIY enthusiasts, this part is often searched and ordered by its product code — include 1502F9 in your search to find compatible units quickly.
Technical Information
Manufacturer: Stellantis
Model: Citroën C4; Peugeot 307
Product Codes: 1502F9 NFP
Additional Numbers: —
Function And Benefits
The activated charcoal element adsorbs odors and volatile organic compounds (VOCs) in addition to filtering out particulate matter such as pollen, soot and dust. Compared with a standard particulate-only filter, a carbon-treated filter significantly improves perceived air freshness inside the cabin and helps reduce nuisance odors from traffic and urban pollution.
Typical Failure Modes And Replacement Interval
Carbon filters do not “fail” electrically but lose effectiveness over time. Common issues include saturation of the carbon bed (reduced adsorption capacity), clogging with dust and leaves (reduced airflow), and physical deformation from improper installation. In polluted or dusty environments the filter will reach end-of-life sooner. Typical replacement guidance is approximately every 12,000–20,000 km or once a year, whichever comes first; adjust interval based on local conditions and driving habits.
Installation Recommendations
Replacement is straightforward for experienced technicians and competent DIYers. Follow these guidelines:
- Locate the filter housing (commonly behind the glovebox or under the cowl at the base of the windshield depending on model).
- Remove the glovebox or cowl access cover as required to access the filter compartment.
- Carefully pull out the old filter, noting orientation (airflow arrows or fitment tabs).
- Inspect and clean the housing of leaves, debris and accumulated dust. Check seals and drain channels for blockages.
- Install the new filter with the correct orientation and ensure sealing surfaces sit flush.
- Reassemble covers and test HVAC airflow and operation.
Tools Required: basic hand tools (screwdriver, trim tool), shop vacuum recommended for cleaning the housing. Typical service time: 15–30 minutes.
Why This Part Is Frequently Replaced
Cabin air filters with activated carbon are consumables. They progressively lose adsorption capacity as pores become filled with particles and chemical adsorbents become saturated. Environmental exposure (urban air, cigarette smoke, heavy pollen seasons) accelerates this process. Reduced cabin airflow, persistent odors or increased dust inside the cabin are the most common symptoms indicating replacement is due.
Notes For Buyers
Searches by product code (1502F9) are common — include the code when looking for compatible units or when ordering replacement parts. Ensure the filter form factor matches the vehicle’s filter housing (orientation, dimensions and sealing flanges) before installation.
