Description
Air conditioning pipe for Citroën C2 C3 1.4 HDi and 1.6 HDi. This is a used, fully sealed part.
This air conditioning (AC) pipe is a direct-fit replacement commonly searched under the original part numbers and is intended for Citroën C2 and C3 models with 1.4 HDi or 1.6 HDi engines. It carries the typical construction of OEM-style AC lines and routes refrigerant between components of the climate system. The part is suitable for professional workshops and experienced DIY mechanics who perform AC repairs and replacements.
Technical Information
- Manufacturer: Stellantis (Citroën / Peugeot)
- Model: Citroën C2, Citroën C3, Citroën C3 Pluriel — Engines: 1.4 HDi, 1.6 HDi
- Product Codes: 9681913580, 9650823180, 9680122380, 6460GQ
- Additional Numbers: NFP
Function And Symptoms
The pipe conveys refrigerant under pressure between AC components (compressor, condenser, receiver/drier and evaporator). When it fails, symptoms include reduced cooling performance, audible hissing or bubbling from the HVAC area, visible oily residue at joints or along the pipe, or sudden loss of refrigerant pressure. Detecting a leak early preserves system components and reduces repair costs.
Why The Part Most Commonly Fails
Common causes of failure are corrosion (especially where road salt and moisture are present), mechanical damage from impacts or rubbing against other components, fatigue at bends or connection points, and deterioration of sealing O-rings or crush washers. Vibration and heat cycles over many years accelerate wear and can create leaks at fittings.
Installation Recommendations
- Recover Refrigerant Safely: Always evacuate and recover refrigerant with certified equipment before disconnecting the AC circuit. Recharge only according to the vehicle specification.
- Replace Seals: Fit new O-rings/crush washers at each connection and lubricate them with the correct PAG oil to ensure a reliable seal.
- Inspect Related Components: Check the compressor, condenser, receiver/drier (or accumulator) and service ports for signs of contamination or damage; replace the receiver/drier if the system was open to atmosphere.
- Leak And Pressure Test: Perform a dry nitrogen pressure test or electronic leak detection after installation to confirm integrity before evacuation and recharge.
- Vacuum And Recharge: Evacuate the system to recommended vacuum, check for stable vacuum (no rise), then charge with the correct refrigerant type and specified mass/pressure for the vehicle.
- Tightening And Routing: Secure clamps and brackets to avoid chafing; respect original routing and torque values where applicable to prevent stress points.
- Final Check: After recharge, run the engine to operating temperature, cycle the AC, check pressures, and verify cooling performance on a test drive.
Practical Notes For Buyers
Part numbers are commonly used search terms — if you found this listing by number, this pipe matches the referenced codes above and fits the listed Citroën models and engine variants. The unit is used but described as fully sealed; inspect mounting points and connection faces during installation and replace seals as standard practice to ensure long-term reliability.
