Description
Air conditioning pipe for Citroën C4, C4 Picasso and Peugeot 307, 3008 with 1.6 HDi engine.
This air conditioning pipe is a direct-fit replacement commonly referenced under OEM numbers such as 9685502680 and related cross-codes 6460LZ / 6460XP / 6477D4. Designed for vehicles in the Stellantis family, the part restores the integrity of the AC refrigerant circuit and helps recover full cooling performance. Ideal for professional garages and experienced DIY mechanics who search by product code or vehicle model.
Description And Function
The pipe is part of the vehicle air conditioning circuit and provides a sealed route for refrigerant between system components. Depending on vehicle configuration it can connect elements such as the compressor, condenser, receiver/drier and evaporator. Proper sealing with O-rings and correct routing ensure efficient cooling and prevent refrigerant loss.
Technical Information
- Manufacturer: Stellantis / Citroën / Peugeot
- Model: Citroën C4; Citroën C4 Picasso; Peugeot 307; Peugeot 3008 I
- Product Codes: 9685502680
- Additional Numbers: 6460LZ, 6460XP, 6477D4
Compatibility
Fits versions with the 1.6 HDi diesel engine as listed above. Always confirm the code printed on the existing pipe against the listed numbers for fastest identification: 9685502680, 6460LZ, 6460XP, 6477D4.
Replacement Procedure
- Recover Refrigerant: Remove refrigerant from the system using certified recovery equipment in accordance with local regulations.
- Access The Pipe: Gain access via the engine bay and, if required, remove obstructing components (airbox, engine covers, undertrays) to reach both pipe ends and mounting brackets.
- Disconnect Connections: Carefully unbolt or release quick-connect fittings and remove the old pipe. Keep track of clamps and brackets.
- Replace Seals: Always fit new O-rings/seals at connection points and lubricate them with the correct type of PAG oil approved for the system.
- Install And Torque: Install the new pipe, secure brackets, and tighten fasteners to the manufacturer’s torque specifications.
- Pressure Test And Evacuate: Perform a leak and pressure test, evacuate the system to remove moisture, then recharge with the correct type and quantity of refrigerant and lubricant.
- Function Check: Run the air conditioning system and verify correct pressure readings and cooling performance. Check for leaks after the system reaches operating temperature.
Installation Recommendation
Replacement of AC pipes requires special tools (refrigerant recovery station, vacuum pump, leak detector, torque wrench). For reliable results use new O-rings, replace the receiver/drier if contamination is suspected, and follow PSA service data for tightening and refrigerant quantities. If you are not equipped to recover and recharge refrigerant legally and safely, have the final steps performed by a professional workshop.
Why The Part Fails Most Often
- Corrosion: Exposure to road salt and moisture can corrode metal pipes and fittings over time, causing leaks.
- Mechanical Damage: Impact from road debris or improper handling during repairs can dent or crack the pipe.
- Seal Deterioration: O-rings and seals harden with age or after exposure to incorrect lubricants and can leak.
- Contamination: Debris or moisture in the AC system can accelerate wear and block passages, stressing components.
- Vibration And Fatigue: Repeated vibration and movement can loosen fittings or cause stress fractures at bends and joints.
Replacing the pipe at the first sign of refrigerant loss or visible damage prevents damage to the compressor and maintains cabin comfort. Using the correct OEM or equivalent code (e.g. 9685502680, 6460LZ, 6460XP, 6477D4) ensures fitment and function for Citroën C4 / C4 Picasso and Peugeot 307 / 3008 I 1.6 HDi models.
