Description
Outlet pipe for injection pump 2.0 HDi RHR RHK Siemens system. Used, fully sealing.
This high-pressure outlet pipe (product code 1570J4) is suitable for Citroën and Peugeot vehicles equipped with the 2.0 HDi RHR/RHK engines and the Siemens fuel system. Designed to carry pressurised diesel between the injection pump and the fuel distribution components, the pipe is supplied as a used item in fully sealing condition — a practical replacement for workshops and experienced DIYers looking to restore leak-free fuel delivery.
Compatibility
Fits the following models (common applications):
- Citroën C4
- Citroën C4 Picasso
- Citroën C5
- Citroën C8
- Peugeot 3008 I
- Peugeot 307
- Peugeot 308
- Peugeot 5008 I
- Peugeot 807
Technical Information
- Manufacturer: Stellantis (Citroën / Peugeot)
- Model: 2.0 HDi (Engine Codes RHR, RHK); Siemens Fuel System
- Product Codes: 1570J4
- Other Numbers: Not Provided
Function
The outlet pipe transmits high-pressure diesel from the injection pump to the next element of the fuel distribution system. It must maintain a reliable, leak-free seal under high pressure and vibration, ensuring correct fuel delivery and stable engine performance.
Most Common Causes Of Failure
- Sealing Washer Degradation: Old or damaged sealing washers (copper/soft metal crush washers or O-rings) lead to external leaks.
- Corrosion And Mechanical Damage: External corrosion or impact can distort the pipe or fittings, compromising the seal.
- Improper Installation: Incorrect torque on fittings, reused crushed washers, or contaminated mating surfaces cause leaks.
- Vibration And Fatigue: Long-term vibration and stress can cause hairline cracks or loosening at connections.
- Contamination: Dirt or debris at fittings prevents full sealing and may damage sealing surfaces.
Replacement And Installation Recommendations
- Safety First: Depressurise the fuel system and isolate the battery before starting work. Wear suitable gloves and eye protection.
- Inspect And Clean: Clean surrounding areas thoroughly to avoid contamination entering the fuel system when removing the pipe.
- Replace Sealing Elements: Always fit new sealing washers or O-rings at both ends when installing the pipe; do not reuse crushed washers.
- Tighten To Spec: Tighten fittings to the manufacturer’s torque specification. Do not overtighten—this can deform sealing surfaces or threads.
- Bleed And Check: After installation, bleed the fuel system according to the vehicle procedure and start the engine while checking all connections for leaks.
- Final Check: Run the engine to operating temperature and verify there are no leaks and that engine performance is normal.
Tip: Search or order by product code 1570J4 to find this exact part quickly. Proper installation and the use of fresh sealing washers are key to restoring a reliable, leak-free fuel system.
