Description
Heater and air conditioning blower fan for Citroën C5 and Peugeot 407.
High-quality replacement blower motor for the heater and air conditioning system, designed as a direct fit for Citroën C5 II and Peugeot 407 applications. This blower restores proper airflow through the HVAC unit, improving cabin heating, ventilation and air conditioning performance. Ideal for professional workshops and DIY mechanics who search by part number: the unit is often referenced under manufacturer codes 4PUH-18456-BA, 4PUH-18456-AF or 6441S3.
Key Benefits
Reliable airflow: Restores full ventilation and climate control response. Quiet Operation: Many failures present as excessive noise or vibration — replacement returns system to normal. Easy Replacement: Designed for straightforward swap with standard hand tools on listed models.Compatibility Keywords: Heater Blower, HVAC Blower Motor, Fan Motor, Citroën C5 Blower, Peugeot 407 Blower, 4PUH-18456-AF, 6441S3.
Technical Information
- Manufacturer: Stellantis (Citroën / Peugeot)
- Model: Citroën C5 II (Second Generation); Peugeot 407
- Product Codes: 4PUH-18456-BA; 4PUH-18456-AF; 6441S3
- Other Numbers: NFP
Function And Symptoms
The blower motor forces air through the heater core and evaporator into the passenger compartment. Common symptoms of a failing blower include no airflow at any speed, reduced airflow, loud grinding or rattling noises, and intermittent operation. If only some fan speeds work, the blower motor resistor or control module is often at fault rather than the motor itself.
Common Failure Causes
- Worn Brushes Or Bearings: Over time the motor brushes wear and bearings can seize, causing noise or stalling.
- Debris In The Fan Housing: Leaves, dust and foreign objects can jam the fan wheel and overload the motor.
- Moisture Ingress And Corrosion: Water or condensation can corrode electrical contacts and motor internals.
- Electrical Issues: Connector corrosion, damaged wiring or a failed resistor/control module affecting speed regulation.
Installation Recommendations
Designed for professional replacement. Typical replacement steps:
- Park vehicle on level ground and disconnect the negative battery terminal to avoid short circuits.
- Access blower motor from passenger footwell by removing the glove box or lower dash panels as required on the specific model.
- Disconnect the electrical connector and remove retaining screws or clips securing the blower housing.
- Withdraw the old unit, inspect the blower housing and cabin filter for debris, then install the new blower motor ensuring the fan wheel is seated correctly.
- Reconnect the electrical connector, reassemble trim panels and reconnect the battery. Verify all fan speeds and listen for abnormal noise.
Tip: Inspect the cabin filter and the blower motor resistor/control module during replacement. Cleaning the housing and removing debris will extend the life of the new motor.
Why Replace This Part
Replacing a failing blower motor restores HVAC performance, improves demisting and passenger comfort, and prevents further damage to the resistor or control components. Because blower failures can lead to overheating or electrical faults, prompt replacement avoids more costly repairs.
Compatibility And Notes
Direct fit for vehicles listed under Model information and product codes above. Always verify the part code before ordering to ensure compatibility with the vehicle’s equipment level and factory options.
