Description
Climate pipe for Citroën C4, C4 Picasso and Peugeot 307, 3008 with 1.6 HDi engine
High-quality replacement climate pipe designed for Citroën and Peugeot models with the 1.6 HDi diesel engine. This service part restores proper refrigerant flow inside the air conditioning circuit, helping to recover full cooling performance and eliminate leaks. Ideal for professional workshops and experienced DIY mechanics who look up parts by reference number — listed OE and alternative codes are included below for fast identification.
Function And Application
The climate pipe is a rigid/soft line in the vehicle air conditioning system that routes refrigerant between components (such as the evaporator, expansion valve, accumulator/drier or condenser depending on system layout). It ensures sealed transport of refrigerant and maintains correct pressure and temperature conditions inside the A/C circuit. A damaged or leaking pipe causes pressure loss, reduced cooling efficiency and may lead to compressor damage if contaminants enter the system.
Compatibility And Fitment
- Citroën C4
- Citroën C4 Picasso
- Peugeot 307
- Peugeot 3008 (first generation)
- Designed for vehicles equipped with 1.6 HDi engines
Technical Information
- Manufacturer: Stellantis (Citroën / Peugeot)
- Model: Citroën C4; Citroën C4 Picasso; Peugeot 307; Peugeot 3008 I
- Product Codes: 9650200980, 6460LZ, 6460XP, 9656859180, 6477D4
- Other Numbers: 9656859180, 6477D4
Replacement Procedure (Overview)
Only qualified personnel with the correct tools should perform A/C repairs. Typical replacement steps:
- Recover refrigerant from the system using certified recovery equipment.
- Remove clamps and connections securing the old pipe; keep track of sealing rings (O-rings).
- Fit the new pipe into position, replacing all O-rings with new ones sized for the joints and lubricated with refrigerant-compatible lubricant.
- Reassemble fittings to the manufacturer recommended torque where available.
- Evacuate the system with a vacuum pump to remove moisture and air, then recharge with the correct type and amount of refrigerant.
- Perform leak test and functional check of the A/C system (pressure test and cooling performance verification).
Installation Recommendations
Follow industry best practices and legal requirements for handling refrigerants. Always use certified refrigerant recovery/recharge equipment. Replace associated O-rings and seals when installing a new pipe to ensure leak-free joints. After fitting, vacuum the system to remove moisture and refill with the manufacturer-specified refrigerant and lubricant. If the vehicle has experienced compressor failure, flush the system to remove debris before installing the new pipe.
Most Common Failure Causes
- Corrosion, especially in regions with road salt exposure, leads to perforation and leaks.
- Mechanical damage from impacts, stone chips or improper previous repairs.
- Deterioration of O-rings and sealing surfaces causing slow leaks over time.
- Contamination after internal compressor failure (metal particles clogging lines and connections).
- Vibration and chafing where the pipe contacts other components, eventually wearing through the material.
Why Choose This Part
Replace a leaking or damaged climate pipe with the correct OEM-referenced unit to restore A/C performance and avoid repeated repairs. The included reference numbers make cross-referencing quick for mechanics searching by part code.
Note For Professionals
This product listing contains OE and alternative references to help with identification. Always confirm fitment against the vehicle’s model and engine variant before ordering. Perform A/C system evacuation and recharge according to local regulations and manufacturer procedures.
