Description
Heater and Air Conditioning Fan for Citroën C5 II and Peugeot 407
This replacement blower motor is designed for reliable cabin ventilation, providing consistent airflow for heating, ventilation and air conditioning systems in Citroën C5 II and Peugeot 407 models. Built to restore proper air circulation, it ensures efficient defrosting, fast cabin warm-up and even climate control performance under varying driving conditions.
Key Features
High-quality blower motor engineered for direct-fit installation in compatible Stellantis vehicles. Optimized to deliver smooth, quiet operation and long service life when installed correctly. Ideal for professional mechanics and experienced DIY technicians looking to replace a worn or noisy fan assembly.
Compatibility And Application
Suitable For The Following Models:
- Citroën C5 II
- Peugeot 407
Frequently Searched By Part Numbers: 4PUH-18456-BA, 6441S3 (see technical section for full codes).
Technical Information
- Manufacturer: Stellantis (Citroën / Peugeot)
- Model: Citroën C5 II; Peugeot 407
- Product Codes: 4PUH-18456-BA
- Other Numbers: 6441S3, NFP
Function And Symptoms Of Failure
The blower motor forces air through the HVAC ducting to the cabin vents and the windshield. Common symptoms indicating a failing blower motor include reduced or intermittent airflow, abnormal noise (grinding, squeaking or rattling), and complete loss of fan operation at all speed settings. A failing blower can compromise defrost performance and passenger comfort.
Why The Part Fails
- Worn Brushes Or Commutator: Over time, brush wear or commutator degradation reduces motor performance and causes noise.
- Seized Or Worn Bearings: Bearings can seize or become noisy, especially in high-mileage vehicles or if contaminated by debris.
- Debris In Fan Housing: Leaves, dust and foreign objects entering the intake can obstruct the fan or damage the impeller.
- Moisture And Corrosion: Water ingress or humidity can corrode electrical connections or the motor windings.
- Electrical Issues Upstream: Faulty blower motor resistors, relays or wiring can cause incorrect speed control or intermittent operation.
Installation Recommendations
- Disconnect The Battery Before Starting Work To Avoid Short Circuits And Protect Electronic Systems.
- Access The Blower Motor From Under The Dash On The Passenger Side Or Through The Glovebox Area, Depending On Vehicle Trim.
- Remove Retaining Screws Or Clips, Unplug The Electrical Connector, And Carefully Extract The Motor Assembly.
- Inspect The Fan Housing And Ducting For Debris; Clean The Area Before Installing The New Unit.
- Check The Cabin Air Filter And Replace If Necessary—A Clogged Filter Increases Motor Load And Accelerates Wear.
- Verify The Function Of The Blower Motor Resistor/Control Module And Wiring Harness If Speed Control Problems Persist.
- After Installation, Reconnect The Battery And Test All Fan Speeds And HVAC Modes To Confirm Proper Operation.
Professional Tips
- When Replacing The Blower Motor, Compare The Electrical Connector And Mounting Points To Ensure A Direct Fit.
- Listen For Unusual Noises During Initial Run-In; Early Detection Of Rubbing Or Imbalance Avoids Rework.
- For Best Results, Clean The Ventilation Ducts And Verify Drain Paths To Reduce Future Contamination.
