Description
Air Conditioning Pipe For Citroën C4 And Peugeot 307, 308 1.6 HDi 16V
This air conditioning pipe is a direct-fit service part for Citroën C4 and Peugeot 307/308 models equipped with the 1.6 HDi 16V engine. Designed for professional workshops and experienced DIYers, the pipe restores refrigerant flow between components of the A/C circuit and helps maintain efficient cabin cooling. Ideal when the original line shows signs of leakage, corrosion or mechanical damage, this component is often searched by its product numbers for quick identification and ordering.
Benefits And Application
Replacement of a damaged A/C pipe returns the system to correct operating pressure, prevents refrigerant loss and avoids compressor overload. The part is suitable for routine repairs and collision damage where the A/C refrigerant lines are affected. Fits common Stellantis platforms used by Citroën and Peugeot, ensuring proper routing and connector compatibility.
How It Works And Why It Fails
The air conditioning pipe serves as a rigid or semi-rigid conduit for refrigerant between the compressor, condenser, evaporator and other components. It must withstand high pressure, thermal cycles and vibration. Common failure modes include:
- Corrosion from road salt and moisture leading to pinhole leaks.
- Mechanical damage from impacts or improper handling during repairs.
- Deteriorated O-rings or sealing faces causing refrigerant and oil leaks.
- Fatigue cracking at bends or joints after many heating/cooling cycles.
How To Replace
Only qualified personnel should perform A/C repairs. Typical replacement steps:
- Recover Refrigerant Using Approved A/C Service Equipment Before Disassembly.
- Disconnect Battery If Required By Vehicle Service Manual.
- Remove Any Obstructing Trim Or Components To Access The Pipe.
- Unscrew Or Unclip Pipe Fittings; Inspect And Replace All O‑Rings And Seals.
- Fit New Pipe In Correct Orientation, Tighten Fasteners To Manufacturer Torque.
- Evacuate The System With A Vacuum Pump, Check For Leaks, Then Recharge With Correct Refrigerant And Lubricant.
- Perform A Functional Test Of The A/C System And Check Pressures.
Installation Recommendations
- Always Recover And Recycle Refrigerant Using Certified A/C Equipment; Never Vent To Atmosphere.
- Replace All Associated O‑Rings And Apply Correct Type And Amount Of PAG Oil During Reassembly.
- Use A Vacuum Hold Test To Verify System Integrity Before Charging.
- Follow Vehicle Manufacturer Procedures For Routing And Clamping To Prevent Rubbing And Vibration Damage.
- Inspect Condenser, Receiver/Drier Or Accumulator And Compressor For Contamination When A Leak Occurs; Replace Contaminated Components As Needed.
Most Common Reasons For Failure
In normal service the pipe can fail due to corrosion from road salt, physical impact, degraded seals, or long-term metal fatigue. Leaks are most often discovered during service when pressure drops or when the system cannot hold vacuum after repair. Prompt replacement prevents moisture ingress and compressor damage.
Technical Information
- Manufacturer: Stellantis (Citroën / Peugeot)
- Model: Citroën C4; Peugeot 307; Peugeot 308 (1.6 HDi 16V)
- Product Codes: 9658201480, 647742
- Additional Numbers: 647742, 9658201480
Keywords: AC Pipe, Air Conditioning Line, AC Hose, Citroën C4 A/C Pipe, Peugeot 307 A/C Pipe, Peugeot 308 A/C Pipe, 1.6 HDi Air Conditioning.
