Description
Air Conditioning Pipe For Citroën C4 And Peugeot 307
Product Description
This air conditioning refrigerant pipe is designed for Citroën C4 and Peugeot 307 vehicles. It provides a direct replacement for the original line and restores proper refrigerant flow between HVAC components. Many customers search for this part by its reference numbers 9658227780 and 647738 — include these codes when searching to find compatible listings.
Key Features
- Direct fit replacement for specified Citroën and Peugeot models.
- Restores reliable refrigerant circulation and system pressure stability.
- Built to meet OEM fitment dimensions for correct alignment and sealing.
- Helps eliminate leaks, hissing noises and poor air-conditioning performance when the original line is damaged or corroded.
Installation Recommendations
Installation should be performed by a trained technician or an experienced DIYer with access to proper tools. Suggested steps:
- Recover Refrigerant Safely Using Certified Equipment. Never open the A/C system while it is still charged.
- Remove Clamps And Connectors Carefully. Note routing and retain any brackets for reuse.
- Replace All O-Rings And Seals At Connections. Lubricate New O-Rings With Appropriate Refrigerant Oil To Ensure A Proper Seal.
- Fit The New Pipe Ensuring Correct Alignment And Secure Mounting. Avoid Twisting Or Kinking The Line.
- Evacuate The System, Perform A Vacuum Leak Test And Recharge With The Correct Refrigerant Type And Specified Charge Amount For The Vehicle.
- Perform A Leak Check Under Pressure And Verify System Operation (Cooling Performance And Compressor Cycling).
Technical Information
- Manufacturer: Stellantis (Citroën / Peugeot)
- Model: Citroën C4; Peugeot 307
- Product Codes: 9658227780
- Additional Numbers: 647738
Why The Part Fails
Air conditioning pipes typically fail for a few common reasons:
- Corrosion From Road Salt Or Moisture Leading To Perforation.
- Mechanical Damage Or Impact From Road Debris And Accidents.
- Wear From Vibration And Chafing Against Other Components.
- Deterioration Of Seals And O-Rings Causing Slow Leaks.
- Blockage Or Contamination Inside The System Leading To Increased Pressure And Stress On Lines.
When To Replace
Replace the pipe if you observe visible leaks, oil traces at the joints, reduced cooling performance, hissing sounds from the A/C circuit, or after damage during repairs. Because the A/C system is closed and pressurised, any leak should be addressed promptly to avoid compressor damage and contamination.
Additional Advice
Always use new sealing rings and, where applicable, replace the receiver-drier or accumulator if the system has been open for an extended period or contaminated. Proper leak testing and correct evacuation/recharge procedures are essential to ensure long-term reliability.
