Description
Output Pipe Of The Injection Pump For 2.0 HDi 90 66 kW RHY – DW10TD Engines With SIEMENS Injection. Used, Fully Sealing.
This high-quality feed pipe (rail supply line) is designed for the fuel injection system of the 2.0 HDi 90 (66 kW) RHY / DW10TD engines fitted to selected Citroën and Peugeot models. The part is often searched and identified by the product code 1570A9, so including the code in listings and searches improves findability. Manufactured for direct fit to the original injection pump and rail arrangement, the pipe ensures reliable fuel delivery and leak-free operation when installed with correct sealing parts.
Key Features
- Direct-fit feed pipe for the injection pump to common rail on 2.0 HDi RHY / DW10TD engines.
- Designed to seal fully with the correct crush washers and fittings.
- OEM-referenced product code: 1570A9 (also marked NFP in some listings).
- Suitable for professional workshops and experienced DIY mechanics who perform diesel fuel system repairs.
Compatibility
Commonly used on the following models (depending on engine variant and production year):
- Citroën Berlingo
- Citroën Xsara
- Peugeot Partner
How It Works And Purpose
The pipe transfers high-pressure fuel from the injection pump to the common rail or between pump outlets and the rail depending on the specific layout of the RHY / DW10TD system. Its role is critical: it must withstand system pressures, maintain a leak-free connection and preserve correct fuel flow to ensure engine performance, emissions control and safe operation.
How To Replace
Basic replacement steps for a competent mechanic:
- Relieve fuel system pressure safely and work in a well-ventilated area away from open flames.
- Clean the surrounding area to avoid contamination entering the fuel system when openings are made.
- Carefully disconnect the pipe fittings from the pump and rail. Replace all crush washers/seals with new ones sized to the manufacturer specification.
- Fit the new pipe, hand-start the fittings, then tighten to the manufacturer torque settings—do not overtighten to avoid cracking the pipe or fittings.
- Prime the fuel system and bleed air according to the vehicle procedure, then check thoroughly for leaks with the engine idling and under load.
Technical Information
- Manufacturer: Stellantis / Citroën / Peugeot
- Model: 2.0 HDi 90 (66 kW) RHY / DW10TD
- Product Codes: 1570A9
- Other Numbers: NFP; SIEMENS (injection system)
Installation Recommendations
- Always use new crush washers or sealing rings when installing fuel lines. Reusing old washers commonly causes leaks.
- Follow the manufacturer’s torque specifications for all fittings—incorrect torque is a frequent cause of failures.
- Keep connections and exposed openings clean to avoid fuel system contamination; replace any damaged fittings or clamps.
- After installation, bleed the fuel system carefully and inspect for leaks at ambient and operating temperatures.
- Work should be performed by qualified personnel or experienced mechanics comfortable with diesel high-pressure systems.
Why This Part Commonly Fails
- Corrosion or damage from road debris, especially on vehicles with high mileage or operated in aggressive environments.
- Worn or incorrectly installed crush washers/seals leading to slow leaks that worsen over time.
- Vibration or mechanical stress causing fatigue cracks at bends or fittings, particularly if previous installation was overtightened or misaligned.
- Contaminated fuel or debris in the system that accelerates wear on connections and sealing surfaces.
Replacing the feed pipe promptly when a leak or damage is detected protects the injection system and prevents performance loss, fuel smell, and safety hazards. For parts searches and ordering, include the product code 1570A9 in your query to improve the chance of finding the correct item quickly.
