Filter box Citroën Peugeot 2.0 i 9643567080 1427J8

Description

Filter box for CITROEN C4 and PEUGEOT 307 cars with 2.0i engines

Part description

This filtrbox (airbox / air filter box) is designed for Citroën and Peugeot cars and is used to safely seat the air filter and guide the intake air into the engine intake. A properly sealing filter box helps protect the engine from dust and dirt and contributes to stable operation.

The part is often searched for by OEM numbers, so it is suitable as a replacement in case of damage to the original part or cracks that can cause false air and poor engine performance.

Technical information

• Manufacturer: Stellantis (Citroën / Peugeot)
• Model: Citroën C4, Peugeot 307
• Other numbers: NFP

Product codes

• Product codes: 9643567080, 1427J8

Installation recommendations

Generally/typically for the filter box (air filter box): the exact procedure may vary depending on the specific design of the intake and fitting in the engine compartment.

1) Before assembly

• Compare the new filter box with the old piece: shape, mounting, number and location of the nozzles and connection to the intake pipe.
• Check for cracks, deformation of seating surfaces and damaged locks/buckles.
• Check the condition of the contact surfaces and any sealing edges – a leak often causes dirt to be sucked in.

2) Necessary tools and materials

• Basic set of keys and sockets
• Screwdrivers (flat/phillips) or clip tools according to design
• Hose clip pliers (if used)
• A clean rag or a gentle cleaner to remove dust from the contact surfaces

3) Step-by-step assembly procedure

1. Turn off the ignition and let the engine cool down.
2. Open access to the filter box (depending on the version by loosening the covers/suction line).
3. Undo the filter box cover clips/screws and remove the air filter (if part of the disassembly).
4. Disconnect the connected hoses or suction lines from the filter box nozzles (gradually and without violence).
5. Remove the attachment of the filter box (screws, silent blocks, locks – depending on the design).
6. Remove the old filter box and clean the surroundings and contact surfaces from dust and dirt.
7. Place the new filter box in its original position and check that it fits correctly in the holder.
8. Reconnect the suction lines/hoses, making sure they are straight and tension-free.
9. Tighten/close all clips and fasteners to hold the joint while not damaging the plastic.
10. Insert the air filter and close the lid of the filter box correctly (make sure it fits tightly all around).
11. Check that there are no loose hoses, connectors or loose suction parts left anywhere.
• 4) Post-assembly checks and test drive/function verification
  • Start the engine and check the intake for false air (typically hissing, unstable idle).
  • Perform a visual inspection of all connections and fasteners after a short engine run.
  • After a short test drive, recheck the clips and seating (especially if the intake line has been tampered with).

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

  • Poorly seated filter or lid → always check the fit all around.
  • Leaky suction hose connection → insert the hose as far as it will go and tighten the clamp evenly.
  • Extension of joints and cracking of plastic → tighten with sensitivity, plastic parts are prone to cracking.
  • Forgotten attachment/screw → after assembly, do a quick check of all attachment points.

  Reasons why the part is damaged

  • Aging of plastic due to heat in the engine compartment – brittleness and subsequent cracking.
  • Incompetent handling when changing the filter (prying the lid, breaking locks, pulling clips).
  • Vibration and tension of the intake line (poor seating, lack of attachment) leading to cracks.
  • Leaks and suction of dirt which deteriorate the sealing surfaces and can cause excessive fouling.