Description
Heating and air conditioning fan for Citroën C5 and Peugeot 407
Product Overview
High-quality replacement blower fan designed for the heating and air conditioning systems of Citroën C5 II and Peugeot 407. This fan assembly (often searched by codes 4PUH-18456-BA or 6441S3) restores airflow in the HVAC system, ensuring effective cabin heating, ventilation and air conditioning performance. The unit suits workshops and DIY mechanics who need a direct-fit electrical replacement part for common PSA group vehicles.
Function And Benefits
The blower fan forces air through the heater core, evaporator and cabin ducts. A healthy fan maintains correct airflow at all fan speeds, prevents overheating of the HVAC components and ensures rapid defogging of windows. Replacing a failing fan improves climate control responsiveness, reduces cabin noise from worn bearings and eliminates intermittent airflow problems caused by electrical faults or mechanical wear.
Installation Recommendations
- Disconnect The Battery Before Starting Work To Avoid Short Circuits And Protect Electrical Components.
- Access The Fan Usually From Below The Dash Or Behind The Glovebox Depending On The Model; Remove Trim Panels And Fasteners To Reach The Assembly.
- Unplug The Electrical Connector And Any Control Module Wiring, Remove Mounting Screws Or Clips, Then Withdraw The Fan Assembly Carefully.
- Check Surrounding Ducts, Cabin Filter And Connector Pins For Debris Or Corrosion; Clean Or Replace As Needed Before Installing The New Fan.
- Test The Unit On All Fan Speeds After Installation To Confirm Correct Operation And Absence Of Abnormal Noise Or Vibration.
Why The Part Commonly Fails
Typical failure modes include bearing Wear Or Seized Motor Due To Age And High Mileage, Accumulation Of Debris In The Fan Wheel Causing Imbalance, Water Ingress Or Corroded Electrical Connectors, And Excessive Strain From Blocked Cabin Filters. In some cases, intermittent operation Is Caused By Loose Connectors Or Fatigued Motor Brushes (In Brush-Type Motors).
Technical Information
- Manufacturer: Stellantis (Citroën / Peugeot)
- Model: Citroën C5 II; Peugeot 407
- Product Codes: 4PUH-18456-BA; 6441S3
- Other Numbers: NFP (as noted in source listing)
Practical Tips For Mechanics
- When Replacing The Fan, Inspect The Cabin Filter And HVAC Ducts — A Blocked Filter Often Accelerates Fan Wear.
- If The Fan Spins But Airflow Is Weak, Verify The Heater Core And Evaporator Are Not Blocked And Confirm The Resistor Or Blower Motor Control Module Is Working Correctly.
- Keep Replacement Screws And Mounting Points Clean; Over-Tightening Can Distort The Housing And Cause Rubbing Noise.
Search And Compatibility Notes
The Part Is Frequently Searched By Product Codes 4PUH-18456-BA And 6441S3. Use These Codes When Searching Catalogues Or Ordering To Improve The Chance Of Quick Identification. Confirm Fitment By Matching The Vehicle Model And Generation (Citroën C5 II / Peugeot 407) Before Installation.
