Description
Air conditioning pipe for CITROËN C2 C3
This air conditioning pipe is an OE-style replacement part commonly referenced under part numbers 9650823380, 647794 and 6460ZR. Designed for Citroën C2 and C3 models (including C3 Pluriel), the pipe carries refrigerant between components of the HVAC system and is often searched for by its product code. Suitable for professional workshops and experienced DIY mechanics who maintain or repair vehicle air conditioning circuits.
Technical information
- Manufacturer: Stellantis (Citroën/Peugeot)
- Model: Citroën C2; Citroën C3; Citroën C3 Pluriel
- Product Codes: 9650823380
- Additional Numbers: 6460ZR; 647794
Function and construction
The AC pipe routes refrigerant under pressure between HVAC components (for example compressor, condenser, dryer/receiver and evaporator). Typical construction combines metal tubing with rubber hose sections and sealed joints. Its integrity is essential to maintain system pressure, prevent refrigerant loss and ensure efficient cabin cooling.
Common failure causes
Most failures are caused by external corrosion, mechanical damage from road debris, abrasion against other components, vibration fatigue at joints, or deterioration of seals and O-rings. Leaks often start at connection points or at transitions between metal and flexible sections.
Symptoms that indicate replacement
- Reduced cooling performance or fluctuating evaporator temperatures
- Visible oil or refrigerant residue at pipe joints
- Audible hissing or pressure loss during system operation
- Failed leak detection or low-pressure readings on AC service gauges
Installation and mounting recommendations
Installation should follow safe HVAC service procedures. Recommended steps:
- Recover refrigerant using approved recovery equipment before opening the system.
- Carefully remove clamps and fittings; note routing and support points to avoid chafing on reinstallation.
- Replace all O-rings and sealing elements with correct sizes; lubricate O-rings with the correct compressor oil to ensure proper sealing.
- Reinstall the new pipe, secure all clamps and brackets to original positions, and torque fittings to manufacturer specifications where available.
- Perform a pressure/leak test, evacuate the system to remove moisture, then charge with the correct refrigerant type and quantity for the vehicle (earlier Citroën C2/C3 models commonly use R134a; confirm against vehicle data).
- Verify system pressures, blower performance and cabin temperature after service.
Advice for mechanics and DIY enthusiasts
Always use certified recovery, vacuum and charging equipment. Replace O-rings and, if possible, inspect or replace adjacent components (receiver/drier, service valves) when a pipe has leaked, because contamination and moisture reduce system life. Wear appropriate PPE and follow local regulations for refrigerant handling.
