Description
Heater servo motor for CITROËN C4 and PEUGEOT 307 II vehicles. Version H1959 U b 41 or H1959 U b 43.
This used heater servo motor (blend door actuator) is a direct-fit replacement for climate control systems on selected CITROËN C4 and PEUGEOT 307 II models. It restores precise control of temperature blend doors and airflow distribution, eliminating common symptoms such as grinding noises, incorrect cabin temperature or stuck flaps. The part is frequently searched by product codes (EAD512, 6447RZ / 6447RF, H1959 U variants), so including these numbers in your search improves findability.
Overview
Designed for workshop use and DIY repairs, this servo motor delivers an economical solution to HVAC faults caused by worn internal gears or motor failure. Compatible with original mounting points and electrical connectors, it allows quick replacement without modification. Ideal for mechanics and enthusiasts who prefer to identify parts by product numbers.
Technical Information
- Manufacturer: BEHR
- Model: CITROËN C4; PEUGEOT 307 II
- Product Codes: EAD512; H1959 U b 41; H1959 U b 43
- Other Numbers: 6447RZ; 6447RF; EAD512 (as listed)
Fitment And Compatibility
Fits HVAC systems used on the listed CITROËN and PEUGEOT models. Users commonly identify compatibility via the product code stamped on the original servo motor. Verify that the connector shape and mounting holes match the removed unit before installation. This servo is intended for the specific H1959 U variants referenced above.
Installation Recommendation
Before starting the job always disconnect the vehicle battery. Typical replacement steps:
- Remove lower glovebox or trim panels to access the HVAC housing (location depends on model and trim).
- Unplug the electrical connector from the defective servo motor.
- Unscrew retaining fasteners and withdraw the actuator from the HVAC case—note the orientation of the actuator and gear engagement.
- Fit the replacement servo in the same position, secure fasteners and reconnect the electrical plug.
- Reassemble trim panels and reconnect the battery. Run the climate system through its range to confirm correct operation.
For best results use basic workshop tools and follow vehicle manufacturer procedures for interior disassembly to avoid breaking trim clips or connectors.
Why This Part Fails
Common failure causes include worn or stripped plastic gears inside the actuator, motor winding wear, contamination by moisture or debris and long-term thermal stress. Symptoms prior to failure are unusual clicking or grinding noises from the dash, inability to change temperature or airflow direction, or inconsistent flap movement. Replacing the servo motor resolves mechanical and electrical faults originating in the actuator itself.
Why Buy
Replacing a faulty heater servo motor is a cost-effective way to restore HVAC control and passenger comfort. This unit is suitable for professional garages and competent DIYers who locate parts by OEM or aftermarket codes. Including the part numbers in your listing and search increases chance of fast identification and sale.
