Description
Air conditioning pipe for CITROËN C5 X7 and Peugeot 407
Product Overview
This air conditioning (A/C) pipe is designed for use on Citroën C5 X7 and Peugeot 407 models and corresponds to the common OEM references used in Stellantis vehicles. It forms part of the refrigerant circuit and is intended as a direct replacement for worn or damaged A/C lines. Typical uses include repair of refrigerant leaks, restoration of correct system routing after collision damage, or replacement during major HVAC servicing.
Key Features
- Direct-fit component for Citroën C5 X7 and Peugeot 407 applications.
- Designed to carry refrigerant under pressure between A/C system components.
- Constructed from corrosion-resistant metal with sealed connections to maintain system integrity.
- Supplied with the referenced product numbers for easy lookup: 9659577780, 647786.
Compatibility
Commonly referenced for: Citroën C5 (X7 generation) and Peugeot 407. Always match the part numbers 9659577780 and 647786 to the vehicle’s original parts list to confirm correct fitment for the specific engine and equipment level.
Technical Information
- Manufacturer: Stellantis / Citroën / Peugeot
- Model: Citroën C5 X7; Peugeot 407
- Product Codes: 9659577780, 647786
- Additional Numbers: NFP
Function
The A/C pipe transports pressurised refrigerant between components of the HVAC system (compressor, condenser, evaporator, receiver/drier or accumulator). It must maintain an airtight seal and withstand temperature and pressure cycles without deforming or leaking.
Common Failure Causes
Failures usually occur because of external corrosion (road salt and moisture), mechanical damage from impacts or abrasion, cracked or degraded connection seals (O-rings), or fatigue at bends and fittings. Leaks most commonly appear at joints and connection points where O-rings or seals have deteriorated.
Installation Recommendations
- Refrigerant must be recovered by a qualified technician before removing the A/C pipe—do not vent refrigerant to the atmosphere.
- Replace O-rings and seals with correct-size, manufacturer-specified parts and lubricate them with the appropriate refrigerant oil (PAG type as specified for the vehicle).
- Inspect adjoining components (compressor, condenser, dryer/accumulator, hoses) for damage and replace any worn items to prevent repeat leaks.
- After installation, perform a vacuum test and leak check, then recharge the system to the manufacturer’s specified refrigerant charge and oil volume.
- Tighten fittings to the manufacturer’s torque specifications where applicable.
Service Life And When To Replace
There is no fixed replacement interval; the pipe can last many years but is vulnerable to environmental corrosion and mechanical damage. Inspect the A/C lines during routine HVAC servicing and replace them if there are signs of leaks, visible corrosion, or physical damage. Vehicles exposed to road salt or frequent mechanical stress tend to require replacement sooner.
Why Choose This Part
Using a correctly referenced A/C pipe (9659577780 / 647786) ensures proper fitment and reliable sealing of the refrigerant circuit. For mechanics and experienced DIYers, fitting a direct-replacement pipe reduces downtime and restores proper climate control performance when installed following correct service procedures.
