Description
Inlet Pipe To The First And Second Cylinder For RAIL 1.4 HDi 16V (8HY)
This fuel rail inlet pipe is designed for the 1.4 HDi 16V (engine code 8HY) injection system used on many Citroën and Peugeot small cars. It feeds the fuel rail for cylinders 1 and 2, providing a secure, leak-free connection between the high-pressure rail and the supply line. Built to OE-fit dimensions, the pipe ensures correct alignment and sealing to maintain stable fuel pressure and reliable injector performance — critical for smooth idle, response and emissions control. Commonly searched under part number 1570F6, this component is a direct replacement option for mechanics and DIY enthusiasts working on HDi diesel engines.
Technical Information
- Manufacturer: Stellantis / Citroën / Peugeot
- Model: 1.4 HDi 16V (Engine Code 8HY)
- Product Codes: 1570F6
- Other Numbers: NFP, RAIL Feed Pipe (Cylinders 1 & 2)
Compatible Vehicles
Typically fitted to small Stellantis group models equipped with the 1.4 HDi 16V (8HY) engine, for example Citroën C3 and Peugeot 1007. Also found on other platform-mates and variants that share the same engine and fuel-rail layout. Always verify engine code and rail configuration when selecting parts.
Installation Recommendations
- Depressurize The Fuel System Before Starting: Relieve fuel pressure and disconnect the battery to avoid sparks.
- Prepare Workspace: Remove Any Engine Covers Or Intake Components Blocking Access To The Rail And Supply Lines.
- Disconnect Fuel Lines Carefully: Use Appropriate Fuel-Line Tools Or Clips To Avoid Damaging Connectors.
- Replace Seals And O-Rings: Install New Sealing Washers/O-Rings Where Applicable To Ensure Leak-Free Connections.
- Torque And Alignment: Fit The Pipe In Correct Orientation And Tighten Fasteners To Manufacturer Torque Specs Where Available.
- Leak Check And Prime: After Assembly, prime The Fuel System And Inspect All Connections For Leaks Before Running The Engine.
- Safety: Work In A Well-Ventilated Area, Keep Flames And Smoking Away From Fuel System Operations.
Why This Part Fails Most Often
- Seal Degradation: O-Rings And Copper/Aluminum Sealing Washers Harden Or Crack Over Time, Causing Fuel Leaks.
- Corrosion And Erosion: Exposure To Contaminated Fuel Or Moisture Can Corrode The Pipe Or Fittings, Especially In Older Vehicles.
- Vibration And Mechanical Stress: Engine Movement Or Improper Mounting Can Lead To Fatigue Cracks At Bends Or Fittings.
- Incorrect Installation: Cross-Threading, Over-Tightening Or Reusing Damaged Seals Often Results In Immediate Or Intermittent Leaks.
- Contaminants In Fuel: Particulate Debris Can Accelerate Wear On Sealing Surfaces And Connectors.
For professional results, replace any associated sealing components when installing this inlet pipe and follow the vehicle manufacturer’s assembly sequence and torque values where available. Proper installation restores correct fuel pressure delivery to cylinders 1 and 2 and prevents drivability issues such as rough idle, loss of power or hard starting.
