Description
Supply Pipe To The Second Cylinder For RAIL 1.4 HDi 1.6 HDi e‑HDi
This high-quality feed pipe is designed for the common-rail fuel system and supplies the second cylinder on Citroën and Peugeot diesel engines. Ideal for professional workshops and experienced DIY mechanics, the part improves reliability of fuel delivery to the injector and restores proper rail pressure distribution where the original pipe is corroded, cracked or leaking. Common search terms: Citroën Peugeot rail pipe, fuel rail feed pipe, 1570Q0, 1.4 HDi pipe, 1.6 HDi pipe.
Technical Information
Manufacturer: Stellantis (Citroën / Peugeot)
Model: For vehicles equipped with 1.4 HDi and 1.6 HDi common‑rail (e‑HDi) engines
Product Codes: 1570Q0
Other Numbers: Not specified
Function And Application
The pipe is part of the common‑rail fuel distribution system. It carries high‑pressure diesel from the rail to the injector area of the second cylinder and ensures stable fuel delivery and pressure balance across the injectors. Correct function is essential for smooth running, proper combustion and emission control.
Replacement Procedure (Overview)
Recommended for experienced mechanics. Typical replacement steps:
- Depressurise the fuel system following manufacturer guidelines before any work.
- Work in a well-ventilated area and prevent fuel spills—have absorbent cloths ready.
- Remove any engine covers or components obstructing access to the rail and pipe.
- Carefully disconnect fittings at both ends; retain or replace seals as required.
- Fit the new pipe, ensuring correct alignment and seal seating. Tighten fittings to manufacturer torque specifications.
- After installation, prime the system, start the engine and inspect thoroughly for leaks and proper operation.
Installation Recommendations
Always follow original manufacturer procedures. Use new sealing rings or crush washers where applicable. Avoid twisting or stressing the pipe during installation—misalignment can cause premature failure. Dispose of any fuel soaked materials safely and check for leaks at idle and under load. If unsure about priming or bleeding the system, consult service literature or a trained technician.
Why This Part Fails
Most common causes of failure:
- Corrosion from moisture or contaminated fuel leading to cracks or fractures.
- Mechanical damage during previous repairs or due to engine vibration and movement.
- Degraded sealing elements at connections causing fuel leaks.
- Contaminants in the fuel system causing wear or clogging at connection interfaces.
Durability And Maintenance
There is no fixed service interval for the feed pipe; it is typically replaced on condition. Inspect the pipe during fuel system service or when diagnosing fuel leaks, hard starting, rough running or loss of power. Replace immediately if any signs of leakage, visible damage or severe corrosion are present.
Compatibility And Search Tips
Part is commonly sought by its product code (1570Q0). When searching or ordering, include engine type (1.4 HDi / 1.6 HDi / e‑HDi) and vehicle make (Citroën, Peugeot) to increase the chance of correct fitment.
