Description
Air Conditioning Pipe for Citroën C4 II, Peugeot 308 and DS4 With 1.6 HDi 9HR Engine
High-quality air conditioning (AC) refrigerant pipe designed as a direct-fit replacement for selected Citroën and Peugeot models. This AC pipe restores reliable refrigerant flow between components of the climate system, helping to eliminate leaks, reduce noise and maintain cooling performance. Ideal for professional workshops and experienced DIY mechanics who search by part number (9675201080 / 6477AA) for fast identification and fitment.
Function And Application
The AC pipe conveys refrigerant between the compressor, condenser, dryer/receiver and evaporator as part of the vehicle’s air conditioning circuit. A correctly fitted pipe with intact connections and O‑rings ensures system pressure integrity and efficient heat exchange for cold-air delivery in the passenger compartment.
Technical Information
- Manufacturer: Stellantis / Citroën / Peugeot
- Model: Citroën C4 II, Peugeot 308, DS4
- Product Codes: 9675201080, 6477AA
- Additional Numbers: Engine Code 1.6 HDi (9HR)
Installation Recommendations
- Only fit after professional recovery of refrigerant using certified recovery equipment. Do not vent refrigerant to atmosphere.
- Replace all associated O‑rings and seals with new, correctly sized parts lubricated with the correct compressor oil.
- Inspect mating surfaces, bracket mounts and hoses for corrosion or damage and replace if required to avoid rework.
- After fitting, evacuate and leak-test the system, then recharge and oil to the manufacturer’s specified quantities and refrigerant type.
- Follow safety precautions for high‑pressure refrigerant systems and wear appropriate PPE.
How The Part Is Replaced
Replacement typically involves depressurising and recovering the refrigerant, removing obstructing components or splash shields if necessary, disconnecting the pipe at its fittings, fitting the new pipe with fresh O‑rings and clamps, and then performing vacuum, leak test and correct recharge. Access and exact disassembly steps vary by model and engine layout; refer to the vehicle repair manual for model-specific removal and torque procedures.
Why The Part Most Often Fails
AC pipes most commonly fail due to corrosion, physical damage from road debris, vibration fatigue at mounting points or sealing failures at the O‑rings and connector joints. Age, exposure to salt and moisture, and previous improper repairs increase the likelihood of leaks. Detecting and replacing a leaking pipe early prevents compressor damage and contamination of the climate system.
Benefits For The Buyer
- Direct fit for original mounting points—reduces installation time.
- Identifiable by OE product codes 9675201080 and 6477AA for fast lookup.
- Restores system integrity to avoid performance loss and compressor strain.
Notes For Professionals And DIYers
This part is intended for technicians familiar with air conditioning service procedures. If unsure about any step—particularly refrigerant recovery, evacuation and recharge—engage qualified AC service equipment and follow local regulations regarding handling of refrigerants.
