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.

Technical Information:
Manufacturer: Citroën / Peugeot
Model: Citroën C2, Citroën C3
Product Codes: 9681913580, 9650823280, 647702
Additional Numbers: 9650823280

Air conditioning pipes are important components of the air conditioning system, as they carry the refrigerant that regulates the temperature in the vehicle. The specific design and material of these pipes ensure their longevity and resistance to corrosion or mechanical damage. By using original parts from Citroën and Peugeot, you can be assured that the replaced air conditioning pipe will fit perfectly and function as expected.

This part is ideal for auto mechanics or experienced DIYers looking for a reliable replacement for the original air conditioning pipe. Installation is straightforward and uncomplicated, allowing for quick and efficient replacement without the need for special tools. For optimal function and maximum performance, we recommend regularly checking the condition of the air conditioning system and replacing worn-out components as necessary.

Whether you are performing routine maintenance or addressing a specific issue with your air conditioning, our used parts for Citroën and Peugeot vehicles are an excellent choice for ensuring the seamless operation of your vehicle. Experience the quality and reliability of our products for yourself.