Description
Overview
The Valeo heater servo motor (F663746X.C / 6447NL) is a quality used HVAC actuator suitable for Citroën C2, Citroën C3 and Peugeot 1007. This servo motor controls the air distribution and blend flaps inside the heating and ventilation box and is commonly searched for by mechanics and DIY enthusiasts using the OEM product codes.
Function And Typical Symptoms
The heater servo motor drives the blend/air distribution flaps that regulate cabin temperature and airflow direction. Typical symptoms of a failing unit include uneven or no heating, intermittent or noisy flap movement, delayed climate response or loss of control over temperature distribution.
Common Causes And Expected Service Life
Failures usually result from worn motor brushes, broken or stripped plastic gears, seized bearings, corrosion or faulty position sensors within the actuator. Longevity depends on usage patterns and environmental exposure; higher mileage and frequent flap cycling increase wear rates.
Replacement And Installation Notes
Replacement typically requires access to the HVAC housing, often achieved by removing the glovebox or lower trim panels. The job generally involves disconnecting the electrical connector, removing a few mounting screws, swapping the actuator and verifying correct flap movement. Some vehicles may require HVAC recalibration or a controlled flap cycling procedure after installation. Recommended for experienced technicians or competent DIYers; consult a repair manual for vehicle-specific steps.
Purchase Advice
This listing is for a used Valeo heater servo motor supplied under the OEM references F663746X.C and 6447NL. Confirm fitment against your vehicle VIN or OEM part lookup before ordering. The seller indicates the part has been inspected prior to sale; please verify the condition details on the offer page if inspection evidence is required.
Technical Information
Manufacturer: Valeo
Model: Citroën C2, Citroën C3, Peugeot 1007
Product Codes: F663746X.C, 6447NL
Other Numbers: May Fit Other PSA Group Vehicles; Please Verify Compatibility With Your VIN Or OEM Part Lookup.
