Description
Air conditioning pipe for PEUGEOT 4007 and CITROËN C‑Crosser 2.2 HDi
Product Overview
High-quality air conditioning pipe designed for Peugeot 4007 and Citroën C‑Crosser with 2.2 HDi engines. This A/C line (often searched by product code 6477R3) replaces the original refrigerant piping between components of the climate system, restoring reliable refrigerant flow and helping to recover full cooling performance. Ideal for professional workshops and experienced DIY mechanics performing air conditioning repairs.
Key Features
- Direct replacement for the original A/C pipe; engineered to match factory fitment and connection points.
- OE/Product Code: 6477R3 — commonly used in parts lookups and searches.
- Restores proper refrigerant circulation and pressure, eliminating leaks that reduce cooling efficiency.
- Durable construction to withstand typical under-hood temperatures and pressures in R134a systems (or vehicle-specific refrigerant).
- Suitable For Both Professional Service And Competent DIY Installation.
Technical Information
- Manufacturer: Stellantis (Peugeot/Citroën)
- Model: Peugeot 4007; Citroën C‑Crosser (2.2 HDi)
- Product Codes: 6477R3
- Other Numbers: No additional reference numbers provided
Function And Symptoms Of Failure
The air conditioning pipe transfers refrigerant between A/C components (compressor, condenser, evaporator, dryer/receiver). When the pipe develops leaks or blockages, common symptoms include reduced cooling, hissing sounds from the system, visible oil traces around fittings, and pressure imbalance during service checks. Leaks typically occur at connection points, crimp joints, or where corrosion has weakened the pipe.
Why This Part Fails Most Often
- Corrosion From Road Salt And Moisture: External corrosion can lead to pinhole leaks, especially in regions with winter salting.
- Mechanical Damage: Impact from debris or improper previous repairs can deform lines and cause leaks.
- O‑Ring Ageing: Seals at connections harden and lose sealing capability, producing leaks at joints.
- System Contamination: Debris or moisture inside the refrigerant circuit can accelerate internal damage and clogging.
Installation Recommendations
Recommended For Experienced Technicians Or Skilled DIYers With Proper Equipment. Typical replacement steps:
- Recover Refrigerant: Legally recover refrigerant with certified recovery equipment before opening the A/C system.
- Inspect And Replace Seals: Replace all O‑rings and seals at connection points; lubricate new O‑rings with correct PAG oil to ensure proper sealing.
- Check Associated Components: Inspect receiver/drier (or accumulator), hoses, and compressor for contamination or wear; replace the receiver/drier if contaminated or open to atmosphere.
- Vacuum And Recharge: Evacuate the system to remove moisture and air, then recharge with the correct refrigerant type and specified charge mass for the vehicle.
- Leak Test And Functional Check: Perform a pressure/leak test and verify cooling performance and correct system pressures under load.
Follow Manufacturer Procedures And Safety Rules During Work. If unsure about refrigerant handling, evacuation or charging, use a professional A/C service.
Notes For Buyers
This part is a direct-fit replacement for the models listed above. Many customers find the part using the code 6477R3, so search by this number if needed. Proper installation restores system integrity and cooling efficiency—do not omit seal replacement or proper evacuation and recharge steps.
Recommended For
- Auto Repair Shops And Independent Mechanics
- Experienced DIY Enthusiasts Performing A/C System Repairs
Purchase Advantage
Replacing a leaking or damaged A/C pipe is one of the most effective repairs to regain full air conditioning performance. Order the correct part code 6477R3 to ensure fitment for Peugeot 4007 and Citroën C‑Crosser 2.2 HDi applications.
