Description
Heater And Air Conditioning Blower For Citroën C5 II And Peugeot 407
This used HVAC blower motor is a direct-fit replacement for Citroën C5 II and Peugeot 407 models. Ideal for professional workshops and DIY mechanics, the unit restores proper airflow for heating and air conditioning systems, eliminates abnormal noises and intermittent operation, and is often searched by original part numbers 4PUH-18456-BA and 6441S3. Suitable for vehicles equipped with the OEM blower assembly, this part improves cabin comfort and system reliability when the original motor shows wear or electrical faults.
Technical Information
- Manufacturer: Stellantis (Citroën / Peugeot)
- Model: Citroën C5 II; Peugeot 407
- Product Codes: 4PUH-18456-BA; 6441S3
- Other Numbers: NFP
Function and Symptoms
The blower motor circulates air through the heater core and evaporator to provide cabin heating, ventilation and air conditioning. Common symptoms of a failing blower include reduced or no airflow, unusual grinding or rattling noises, intermittent operation, or the fan working only on certain speed settings (often an electrical resistor or motor brush issue).
Common Failure Causes
- Worn Brushes Or Bearings: Mechanical wear leads to noise and eventual seizure of the rotor.
- Water Ingress Or Moisture: Leaks or condensation can corrode electrical parts and bearings.
- Debris In The Fan Housing: Leaves or dirt can jam the fan wheel and damage the motor.
- Electrical Faults: Connector corrosion, broken wires, or a failed blower resistor can cause intermittent speeds.
- Age And High Mileage: Long-term use accelerates wear of moving parts and insulation breakdown.
Installation
Replacement is straightforward for experienced technicians and competent DIYers. Typical steps:
- Disconnect The Vehicle Battery Before Starting Work.
- Access The Blower Motor By Removing The Glove Box Or Lower Dash Panel On The Passenger Side (varies by model).
- Unplug The Electrical Connector And Remove Mounting Screws Or Clips Securing The Motor And Fan Assembly.
- Withdraw The Old Motor With The Fan Wheel, Transfer Any Required Seals Or Grommets, Install The Replacement Unit, And Secure Fasteners.
- Reconnect The Electrical Connector, Refit Panels, Reconnect The Battery, And Test All Fan Speeds And System Operation.
Mounting Recommendations
- Always Disconnect The Battery To Avoid Short Circuits And Protect Vehicle Electronics.
- Inspect The Fan Wheel For Damage; Replace If Bent Or Unbalanced.
- Check The Blower Resistor And Related Fuses When Replacing A Motor—Symptoms Can Be Caused By Both Components.
- Ensure Connectors Are Clean And Secure; Use Dielectric Grease On Terminals If Corrosion Is Present.
- Tighten Fasteners To Manufacturer Spec If Known; Avoid Over-Tightening Plastic Mounts.
- Perform A Full Function Test Of All HVAC Modes And Speeds After Installation.
Why Choose This Part
Part numbers 4PUH-18456-BA and 6441S3 are commonly used search terms for Citroën and Peugeot HVAC repairs. This blower motor is a practical solution to restore proper cabin airflow and reduce noise issues, making it a cost-effective choice for workshops and home mechanics tackling HVAC faults on C5 II and 407 models.
