Description
Air conditioning pipe for Citroën C4 II and Peugeot 308, 3008 and DS4 1.6 e-HDi
High-quality air conditioning pipe designed for vehicles in the Stellantis family equipped with the 1.6 e-HDi engine. This A/C refrigerant line (OE references 9670651880 / 6477Z9) ensures reliable connection between A/C components and helps maintain system pressure and cooling performance. Designed for professional workshops and experienced DIY mechanics, the pipe is a direct-fit replacement that restores proper refrigerant routing and reduces the risk of leaks that lead to poor air conditioning performance.
Key Benefits
- Direct-fit replacement for quick installation and minimal downtime.
- Maintains correct refrigerant routing to ensure optimal cooling efficiency.
- OEM cross-references included to simplify part identification (9670651880, 6477Z9).
- Suitable for mechanics and experienced DIYers performing A/C system repairs.
Technical Information
- Manufacturer: Stellantis (Citroën / Peugeot)
- Model: Citroën C4 II; Peugeot 308; Peugeot 3008; DS4 (1.6 e-HDi)
- Product Codes: 9670651880
- Additional Numbers: 6477Z9
Function And Application
The pipe carries refrigerant between major A/C components (compressor, condenser, evaporator/expansion valve) and is a critical part of the sealed climate system. Proper sealing and routing are essential to preserve system pressure and cooling capacity. The part is typically used on Diesel 1.6 e-HDi applications for the listed model range.
Installation Recommendations
- Perform refrigerant recovery using certified equipment and in compliance with applicable regulations before removing the line.
- Replace all associated O-rings and seals with correctly sized, lubricant-coated O-rings to ensure leak-free joints.
- Inspect mating surfaces and fittings for damage or corrosion; clean and prepare surfaces before assembly.
- Use recommended torque values for clamps and fittings to avoid over-tightening or crushing the line.
- After installation, perform a pressure/leak test, evacuate moisture with a vacuum pump, and recharge the system with the manufacturer-specified refrigerant and lubricant according to vehicle specifications.
- Perform a system performance check to confirm correct cooling and absence of leaks.
Why This Part Fails Most Often
- Corrosion from moisture and road salts causing pitting and eventual leaks at the pipe or fittings.
- Mechanical damage from road debris, improper routing, or contact with other components leading to abrasion and perforation.
- Degraded O-rings and seals at the connections, which lose elasticity over time and allow refrigerant to escape.
- Vibration and stress cycles that can fatigue joints or weakened sections of the pipe.
Fitment Notes
Intended for Citroën C4 II and compatible Peugeot/DS models listed above. Always confirm part numbers (9670651880 / 6477Z9) against the vehicle’s existing component to ensure correct fitment and avoid returns.
Suitable for professional use in workshops and for experienced DIY mechanics familiar with A/C system service procedures. Replacing this pipe during any A/C repair or leak diagnosis restores system integrity and helps avoid recurring refrigerant loss and reduced cabin cooling.
