Description
Air Conditioning Pipe for Citroën C4 and Peugeot 307/308 1.6 HDi 16V
This air conditioning pipe (AC line) is intended for Citroën C4 and Peugeot 307/308 models equipped with the 1.6 HDi 16V engine. Supplied with OEM reference numbers 9658201480 and 647742, the part provides a direct-fit solution for the refrigerant circuit and is suitable for professional workshops and competent DIY technicians looking for a reliable replacement component.
Technical Information
- Manufacturer: Stellantis (Citroën / Peugeot)
- Model: Citroën C4; Peugeot 307; Peugeot 308 (1.6 HDi 16V)
- Product Codes: 9658201480, 647742
- Other Numbers: 9658201480, 647742
Function
The AC pipe is a pressure line in the vehicle air conditioning system that transports refrigerant between system components (compressor, condenser, evaporator and receiver/drier). It ensures sealed transfer of refrigerant and associated lubricating oil while withstanding system pressure and temperature cycles.
Compatibility And Fitment
Fits Citroën C4 and Peugeot 307 / 308 vehicles with the 1.6 HDi 16V diesel engine. Check the stamped or printed reference on the original pipe and compare product codes 9658201480 / 647742 to confirm fitment. The pipe is commonly listed under categories: Cooling, Heating, Air Conditioning | AC Pipes.
Installation Recommendations
- Always recover refrigerant with appropriate AC service equipment before removal; handling refrigerant requires certified recovery tools and compliance with local regulations.
- Replace all associated O-rings and seals at connections (use manufacturer-specified sizes and lubricant type) to ensure leak-free joints.
- After fitting, evacuate the system to remove moisture and air, then recharge to the manufacturer’s specified refrigerant amount and oil charge.
- Use correct torque values and follow workshop manual procedures for tightening fittings; if torque specs are not available, consult the official repair documentation.
- Inspect brackets, clips and surrounding hoses for wear or contact points that could cause abrasion; secure the pipe to prevent vibration wear.
- If you are not equipped with AC recovery/vacuum/recharge tools, have the final evacuation and refill performed by an AC service centre.
Most Common Failure Reasons
- External Corrosion: Exposure to road salt and moisture can corrode metal lines and fittings, leading to leaks.
- Mechanical Damage: Impact or rubbing against other components can cause cracks or perforation in the pipe.
- Degraded Seals: Aged or hardened O-rings at connection points are frequent sources of refrigerant leaks.
- Vibration and Fatigue: Long-term vibration can stress joints and bends, eventually causing leaks.
- Contamination: Debris or moisture entering the system (often via damaged pipes or poor service practice) can accelerate wear on components and lead to failures elsewhere in the AC circuit.
Signs of a failing AC pipe include visible oil residue on connections, hissing noises from the AC system, reduced cooling performance and intermittent operation. Replacing a leaking pipe and renewing seals typically restores proper function when no other major component is damaged.
Order this AC pipe by referencing product codes 9658201480 or 647742 to ensure fast identification. Suitable for professional workshops and experienced DIYers who perform AC system service to correct standards.
