Direct-fit air conditioning tube designed for Stellantis vehicles from the Citroën and Peugeot families. This climate pipe (common references 9684368380, 6477F4, 9831991080, 9819864880) routes refrigerant within the A/C circuit and is suitable for a range of models including Peugeot 308, 3008, 5008 and RCZ as well as Citroën C4 variants and C4 Picasso. Built to OEM mounting points and connection geometries, it helps restore proper refrigerant flow and prevents leaks that cause loss of cooling performance. Ideal for professional workshops and experienced DIYers performing A/C repairs or component replacements.

Technical Information

• Manufacturer: Stellantis (Citroën / Peugeot)
• Model: PEUGEOT 308, 3008, 5008, RCZ; CITROËN C4, C4 II, C4 PICASSO
• Product Codes: 9684368380, 6477F4, 9831991080, 9819864880
• Additional Numbers: (T84), (T87), R134A

Function And Application

The tube is a fixed pipe/hose element of the vehicle air conditioning system that transports refrigerant between components such as the condenser, evaporator, compressor and receiver-drier/accumulator. It ensures leak-free routing under operating pressure and temperature while maintaining correct bend radii and mounting clearances specific to the vehicle models listed.

Replacement Procedure (Overview)

Replacement of the A/C tube should be performed by qualified personnel or skilled DIY mechanics with proper equipment. Typical steps:

• Recover Refrigerant: Safely evacuate and recover the R134a refrigerant using certified recovery equipment.
• Access And Remove: Remove any protective covers or brackets to access the tube. Undo fasteners and quick-connect fittings. Keep track of clamps and mounting hardware.
• Inspect And Replace Seals: Replace all O-rings and sealing elements on connections with correctly sized, lubricated O-rings (use compatible PAG oil) to ensure proper sealing.
• Install New Tube: Fit the new tube into position, secure brackets and connectors to OEM torque where specified, and ensure proper routing without kinks or contact with moving parts.
• Vacuum And Recharge: Evacuate the system to remove moisture and air, then recharge with the correct type and quantity of refrigerant (R134a) to manufacturer specifications.
• Leak Test And Function Check: Perform a pressure/leak test and verify cooling performance and system pressures during operation.

Installation Recommendations

• Always use certified refrigerant recovery and charging equipment; do not vent refrigerant to atmosphere.
• Replace O-rings at every sealing connection and lubricate them with the correct oil (PAG) to prevent leaks.
• Inspect adjacent components (compressor, condenser, receiver-drier, expansion valve) for damage or contamination; contaminated oil/detritus can damage the new tube.
• Perform a vacuum and leak test after fitting and before final charging. Verify system pressures and temperatures with diagnostic gauges.
• Follow vehicle manufacturer procedures and torque values for clamps and fittings where available.

Why This Part Most Often Fails

Common failure causes for A/C tubes include corrosion (especially in regions with road salt or high humidity), mechanical damage from road debris or incorrect routing, degradation of O-rings and seals leading to slow leaks, and stress from vibration or improper mounting. Contamination inside the A/C system (moisture, debris, or degraded oil) can accelerate wear and lead to blockages or localized corrosion. Failures typically occur after several years of service, but life expectancy depends on driving conditions and maintenance history.

Notes For Buyers

Use the product codes listed above (9684368380, 6477F4, 9831991080, 9819864880) when searching for exact matches. This item is intended for vehicles using R134a refrigerant. For best results, pair replacement of the tube with inspection or replacement of the receiver-drier/accumulator and replacement of O-rings.

Product Overview

This A/C Pipe (Air Conditioning Line) is a direct-fit used part for a range of Stellantis vehicles from the Peugeot and Citroën families. Ideal for professional workshops and DIY mechanics searching by part number (e.g. 9684368380, 6477F4), the pipe restores refrigerant circuit integrity when original lines are leaking or mechanically deformed. The item is slightly deformed cosmetically but maintains full sealing performance and functionality.

Technical Information

• Manufacturer: Stellantis / Citroën / Peugeot
• Model: Peugeot 308; Peugeot 3008 (I); Peugeot 5008 (I); Peugeot RCZ; Citroën C4; Citroën C4 Picasso (C4 II)
• Product Codes: 9684368380, 9831991080, 9819864880, 6477F4
• Additional Numbers: 6477F4, 9684368380

Fitment And Notes

The pipe fits a number of petrol and diesel variants within the listed models—fitment may vary by engine version and production year. Always compare the shape, connections and mounting points of the replacement part with the original component before installation. This part is commonly sought by part number, so including the codes above in searches will improve findability.

Replacement Procedure

Recommended replacement steps for qualified technicians or experienced DIYers:

• Recover Refrigerant: Use approved recovery equipment to evacuate the refrigerant safely in accordance with local regulations.
• Prepare Work Area: Work on a cooled system; wear eye protection and gloves.
• Remove Old Pipe: Loosen fittings and clamps securing the line. Note position of brackets and clips for correct reinstallation.
• Replace Seals: Always fit new O-Rings or seals at each connection point; lubricate seals with the correct A/C oil for the vehicle’s refrigerant type.
• Install New Pipe: Fit the pipe, secure clamps and brackets, and torque fasteners to manufacturer recommendations where available.
• Evacuate And Recharge: Evacuate the system with a vacuum pump to remove moisture and air, then recharge with the manufacturer-specified refrigerant and oil charge.
• Leak And Function Test: Perform a pressure/leak test and verify cooling performance and system pressures during operation.

Typical job time ranges from approximately 1 to 2 hours depending on accessibility and required system work.

Why The Part Most Often Fails

A/C pipes commonly fail due to mechanical damage (impact or deformation), corrosion at metal joints, vibration fatigue, and degraded O-Rings or seals. Thermal cycling and road debris or minor collisions can bend or dent the pipe, compromising connection points. In many cases, the pipe body remains serviceable despite small deformations if sealing surfaces and fittings are intact—this is the condition of the offered part.

Installation Recommendations

• Always Replace O-Rings: Use new, correctly sized O-Rings and apply the specified refrigerant oil to ensure proper sealing.
• Professional Refrigerant Handling: Recovery and recharge must be performed with certified A/C service equipment by trained personnel or an authorized workshop.
• Inspect Adjacent Components: Check condensers, evaporators, hoses and clamps for wear or damage while the system is open to avoid repeat leaks.
• Perform Leak Detection: Use electronic leak detection or UV dye to confirm a dry, leak-free system after repair.

Condition Reminder: The Pipe Is Slightly Deformed Visually But Has Been Confirmed To Seal And Function Properly In The Refrigerant Circuit.