A/C Pipe Citroën C4 Picasso 9675202080 6477GP

Description

Overview

This A/C pipe is a direct-fit refrigerant line designed for Citroën C4 Picasso and C4 Grand Picasso models equipped with the 1.6 HDi diesel engine (engine code 9HR). It forms an integral part of the vehicle’s air conditioning circuit, carrying refrigerant between components to deliver reliable cabin cooling when the system is intact.

Function and Common Failure Modes

Function: The pipe routes refrigerant under pressure between the condensing, evaporator and compressor sections of the air conditioning system. It must seal at flared fittings or quick-connect joints and tolerate vibration, temperature changes and road debris.

Common Reasons For Replacement: Corrosion or mechanical damage to the pipe, leaking seals or O-rings at connection points, abrasion from contact with other components, or deformation after impact. Typical symptoms include reduced cooling performance, audible hissing, visible oil traces around fittings, or loss of system pressure during a leak test.

Benefits For Professionals And DIY Mechanics

– Direct-fit OE-coded replacement (easy identification by part number).
– Saves workshop time: correct fitment reduces diagnostic time.
– Clear failure indicators help prioritize repair or replacement during service checks.

Basic Replacement Guide (Professional Procedure)

Note: Refrigerant recovery and recharge must be performed in accordance with local regulations and using appropriate equipment. The following is a high-level overview for experienced technicians:

1. Recover refrigerant from the A/C system using certified recovery equipment.
2. Depressurize and remove clamps or fasteners securing the old pipe; take care to note routing and bracket locations.
3. Remove the pipe and replace all associated O-rings/seals with correct size parts lubricated with compatible PAG oil or lubricant specified for the system.
4. Install the new pipe, secure all brackets and fittings to the correct torque values, and visually inspect for clearance and chafing risks.
5. Evacuate the system with a vacuum pump to remove moisture and check for leaks (vacuum hold test).
6. Recharge the system with the correct refrigerant charge and oil quantity as specified for the vehicle, then perform a leak and performance test.

If you are not certified to handle refrigerants, have the final evacuation and recharge completed by an authorized A/C technician.

When To Replace

Replace this pipe when you detect leaks, persistent loss of cooling performance, visible damage, or when performing major A/C component replacements (compressor, condenser, evaporator) where lines are removed or disturbed. There is no fixed service interval; life depends on operating conditions and exposure to corrosion or impact.

Compatibility & Fitment Notes

Fits Citroën C4 Picasso and C4 Grand Picasso with 1.6 HDi engine (engine code 9HR). Always verify fitment by comparing the vehicle’s VIN, engine code and the OE part numbers before purchase.

Technical Information

Manufacturer: PSA Citroën Peugeot
Model: Citroën C4 Picasso, Citroën C4 Grand Picasso (1.6 HDi – engine code 9HR)
Product Codes: 9675202080, 6477GP
Other Numbers: No additional reference numbers provided; please cross-check with vehicle parts catalog or dealer data.

Always confirm the required refrigerant type, oil specification and charge volume from the vehicle service manual or official parts database before recharging the system.