Description
Air Conditioning Pipe For CITROËN C4 II, PEUGEOT 308 And DS4 With 1.6 HDi (9HR) Engine.
This air conditioning pipe is an OE-related replacement designed for Citroën and Peugeot models fitted with the 1.6 HDi (9HR) engine. Ideal for professional workshops and experienced DIY mechanics, the pipe restores sealed refrigerant flow in the A/C circuit and helps recover original cooling performance. Commonly searched by OEM numbers 9675201080 and 6477AA, this part is a direct-fit solution for vehicles that require a serviceable high‑pressure refrigerant line between A/C components.
Technical Information
- Manufacturer: Stellantis (Citroën / Peugeot)
- Model: Citroën C4 II; Peugeot 308; DS4
- Product Codes: 9675201080; 6477AA
- Other Numbers: No Additional Numbers Available
Function And Fitment
The pipe transports refrigerant under pressure between A/C system components (condenser, dryer/accumulator and evaporator) and ensures leak‑free connection points. It is intended as a direct replacement for the listed Citroën/Peugeot applications with the 1.6 HDi (9HR) engine and is typically fitted where original hard lines or hose assemblies have failed or been damaged.
How The Part Is Replaced
- Recover Refrigerant Using Approved Recovery Equipment Before Any Work.
- Remove Any Securing Clips Or Brackets And Disconnect The A/C Fittings At Both Ends Of The Pipe.
- Replace All O‑Rings/Seals With New, Correctly Lubricated Items During Reassembly.
- Refit The Pipe, Tighten Fittings To Manufacturer Torque Specifications, And Secure Brackets.
- Perform A Vacuum And Leak Test, Then Recharge The System With The Correct Refrigerant And Oil Volume.
Installation Recommendations
- Work Should Be Performed By Or In Cooperation With A Technician Equipped For A/C Service—Refrigerant Recovery And Recharge Require Certified Equipment.
- Always Use New O‑Rings And Apply Appropriate Refrigerant Oil To Seals To Prevent Leaks.
- Inspect Condenser, Receiver/Drier And Compressor For Contamination; If Metal Debris Is Present, Flush The System And Replace The Receiver/Drier.
- Follow Manufacturer Procedures For Tightening And Leak Testing To Avoid Damaging Fittings.
- After Installation, Verify System Pressure And Cooling Performance Under Load.
Why This Part Most Often Fails
Failures Are Usually Caused By Age‑Related Degradation, Corrosion (Especially In Regions With Road Salt), Mechanical Damage From Road Debris Or Improperly Secured Lines, And Deterioration Of O‑Rings/Seals. Compressor Failure Or Internal Contamination Can Also Cause Blockages Or Abrasive Wear Leading To Leaks. Typical Symptoms Include Reduced Cooling Output, Visible Oil Traces Around Connections, And Audible Hissing From Leaks.
Because this part is often searched by its OEM numbers, check the Product Codes 9675201080 and 6477AA when locating the correct replacement. For best results, follow recommended installation steps and carry out a full system leak test and recharge after fitting.
