Description
Air conditioning pipe for CITROËN C2 and C3 vehicles
High-quality replacement air conditioning pipe designed for Citroën C2 and C3 platforms. This AC line is intended for technicians and experienced DIYers looking for a direct-fit component to restore reliable refrigerant flow and cabin cooling. Suitable for common service and repair jobs, the pipe matches OE routing and connection points to ensure leak-free installation when fitted with new seals. The listing includes commonly searched part numbers so you can quickly confirm compatibility during ordering or parts lookup.
Technical Information
- Manufacturer: Stellantis (Citroën / Peugeot)
- Model: Citroën C2, Citroën C3, Citroën C3 Pluriel
- Product Codes: 9650823380, 6460ZR, 647794
- Other Numbers: 647794 6460ZR NFP
Function And Application
The AC pipe conveys refrigerant between air conditioning components (for example compressor, condenser, evaporator or receiver/drier) as part of the vehicle’s refrigeration circuit. It can be a rigid metal line or a combination of metal and rubber hose sections; its purpose is to keep the circuit sealed under pressure while resisting vibration and heat from the engine bay.
How To Replace
Replacement should follow standard air conditioning service procedures: recover refrigerant using certified recovery equipment, remove clamps or fittings securing the old pipe, transfer or replace any required mounting brackets, install new O-rings/seals lubricated with the correct PAG oil, secure connections to the specified seating, evacuate the system to remove moisture, and recharge to the correct refrigerant charge. Use proper torque values for fittings and inspect for chafing points after installation.
Installation Recommendations
- Always Recover Refrigerant: Use certified recovery/recycling equipment to evacuate the system before disconnecting any lines.
- Replace Seals: Fit new O-rings or sealing washers at every connection and lubricate them with the correct compressor oil to prevent leaks.
- Inspect Adjacent Components: Check the condenser, receiver/drier, compressor and expansion valve for contamination or damage; debris can shorten the life of a new pipe.
- Vacuum And Recharge: Evacuate the system to the correct vacuum level and recharge to the manufacturer’s specified refrigerant type and charge; Citroën C2/C3 models of this era typically use R134a, but verify the vehicle’s specification before service.
- Leak Test: Perform a pressure/leak test and monitor system pressures to confirm correct function after installation.
Why This Part Fails Most Often
Common failure modes include corrosion from road salt and moisture, abrasion where the line contacts brackets or bodywork, degradation of rubber sections or O-rings with age, and accidental damage from impacts or improper previous repairs. Leaks develop slowly in many cases, so regular visual checks during routine maintenance are recommended.
Symptoms Of A Faulty AC Pipe
- Reduced cooling performance or intermittent AC operation.
- Visible oil stains or refrigerant residue at pipe connections.
- Audible hissing indicating a refrigerant leak.
- Low system pressures on service gauges with no compressor mechanical fault.
Notes For Mechanics And DIYers
This part is aimed at professional technicians and competent DIY mechanics. Air conditioning service involves high-pressure refrigerant and should be performed with appropriate tools and safety measures. Always follow local regulations when handling refrigerants and dispose of recovered refrigerant and contaminated parts correctly.
