Outlet pipe to Citroën Peugeot 1570J4 pump

Description

Injection pump outlet pipe 2:0 HDI RHR RHK SIEMENS system
Used, fully sealed

Part description

This output pipe to the pump (pipe from the area of the RAIL system) is intended for Citroën/Peugeot cars and corresponds to the SIEMENS system. This is a used part that is described as fully sealing, making it suitable as a quick and cost-effective replacement for fuel system repairs when the original line is leaking or mechanically damaged.

It is often searched directly by the number 1570J4 – we recommend comparing it with the markings on the original part.

Technical information

• Manufacturer: Stellantis (Citroën / Peugeot)
• Model: Citroën C4; Citroën C4 PICASSO; Citroën C5; Citroën C8; PEUGEOT 3008 I; Peugeot 307; Peugeot 308; PEUGEOT 5008 I; Peugeot 807
• Other numbers: not specified

Classification: Engine – parts and accessories / RAIL + accessories / Pipes.

Note about the engine: according to the documents for 2.0 HDI (RHR, RHK), SIEMENS system.

Product codes

• Product codes: 1570J4

Installation recommendations

Generally/typically for the replacement of the fuel line (pipe) in the rail system maximum cleanliness and careful seating of the joints is required. The exact procedure may vary depending on the specific design of the car and accessories.

1) Before assembly

• Compare the new part with the old part: shape, length, routing, ends and seating surfaces.
• Check that the pipe is not dented, cracked, twisted and that the threads/cones are not torn.
• Check the cleanliness of the inside of the tube – there must be no dirt in it.
• If there were clips/retainers on the original line, verify their condition and usability.

2) Necessary tools and materials

• Suitable wrenches for fuel fittings (ideally side/eyelet depending on design)
• Clean rags/towels, possibly degreasing cleaner
• Protective gloves and goggles
• Light source for checking leaks

3) Step-by-step assembly procedure

1. Turn off the ignition and let the engine cool down.
2. Clean the work area of dust and grease so that dirt does not enter the fuel system.
3. Carefully loosen the screwing of the old pipe and prepare absorbent material for possible fuel residues.
4. Dismantle the old pipe so as not to bend the surrounding pipes or damage the ends.
5. Check the mating surfaces of the counters (on the pump/on the connecting element depending on the design) and clean them.
6. Place the pipe in place without tension – it should not be “forced” or twisted.
7. Screw the ends by hand first (the thread must go easily) to avoid stripping the thread.
8. Sit the pipe into the clamps/guides (if used) to minimize vibration.
9. Tighten the fittings adequately and evenly according to common practice for the given type of connection (without using “leverage” beyond reasonable measure).
10. Check that the pipe does not rub against a sharp edge anywhere and has a safe clearance to the surrounding parts.
• 4) Post-assembly checks and test drive/function verification
  • After first start-up, visually check all fittings and surrounding piping for moisture/fuel leakage.
  • Let the engine run briefly and repeat the check.
  • After a short test drive, check again for tightness and correct seating in the clamps.

  5) The most common assembly mistakes + how to avoid them

  • Impurities in the system → always carefully clean the surroundings and parts before assembly.
  • Crossing the thread on the fitting → always start manually, without violence.
  • Assembly under tension / bad routing → the pipe must sit naturally, use clips.
  • Damage to bearing surfaces → use the correct tools and do not turn the counter parts against each other.

  Reasons why the part is damaged

  • Corrosion and material degradation due to age and the environment in the engine compartment.
  • Material fatigue and vibration cracks, especially with missing/damaged fasteners.
  • Mechanical damage (bending, denting) during unprofessional disassembly or previous repair.
  • Torn threads or damaged seating surfaces due to improper tools or overtightening of screw connections.
  • Leakage caused by poor joint seating or dirt on the contact surfaces.