Description
Filter box 1.6 HDI 80 KW for CITROEN C5 II, X7 and PEUGEOT 407 cars
Part description
This filter box (air filter box) is intended for the 1.6 HDI 80 kW engine and belongs to the category of engine parts and accessories. It serves to safely store the air filter and to guide the intake air so that clean air without impurities enters the engine.
In practice, it is a part that is often solved in case of cracks, leaks, after unprofessional intervention or when replacing related parts of the intake. For the correct selection, the key is to compare product numbers and make individual connections.
Technical information
- Manufacturer: Stellantis (Citroën / Peugeot)
- Model: Citroën C5 II, Citroën C5 X7, Peugeot 407
- Other numbers: 9651883080, 1420N9
Product codes
- Product codes: 9659405080, 9651883080, 1420N9
Installation recommendations
Generally/typically for the filterbox (air filter box), the exact procedure may vary depending on the specific design of the car and the connecting hoses/sensors in the intake.
1) Before assembly
- Compare the new and original part: the shape of the filter box, the location and diameters of the connections, the handles, the contact surfaces of the lid.
- Check if the part is cracked, deformed or has damaged threads/mounts.
- Check compliance with codes 9659405080 / 9651883080 / 1420N9.
- Check the condition of the sealing edges of the lid and the cleanliness of the contact surfaces (there must be no baked-on dirt).
2) Necessary tools and materials
- Normal set of gola/ratchet and bits, screwdrivers
- Pliers for clips/hose clamps (according to design)
- Cleaning agent for degreasing and rags (for cleaning around the intake)
- New/checked air filter (depending on condition)
3) Step-by-step assembly procedure
- Turn off the ignition, let the engine cool down and secure the car against movement.
- Free access to the filter box (remove obstructing covers depending on the design).
- Mark the position of the hoses and lines so that the connections are not confused during assembly.
- Loosen the clips/clamps and disconnect the connected suction hoses from the filter box (work carefully to avoid breaking the plastic grommets).
- Unscrew/unclip the lid of the filter box and remove the filter (if it is part of the disassembly).
- Release the attachment of the filter box to the bodywork/engine compartment and remove the filter box.
- Clean the surroundings and contact surfaces so that dirt does not get into the suction.
- Place the filter box in its original place and secure it in the handles (without crossing the screws and without prying).
- Insert the air filter (if changing) and seat the filter box lid correctly.
- Reconnect all hoses and tighten clips/clamps so that the joint is tight but does not deform the plastic.
- Check that nothing is rubbing or pressing on the filter box and that no hoses are broken or strained.
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4) Post-assembly checks and test drive/function verification
- After starting, listen for leaks in the intake (hissing) and check that the filter box is firmly in place.
- Do a short test drive and then recheck the tightness of the connections and the seating of the hoses.
5) The most common assembly mistakes + how to avoid them
- Leaky hose connections – always check for proper fit and seating of clamps.
- Squeezed/poorly seated lid and filter – the filter must fit in the grooves, the lid must fit all the way around.
- Plastic necks breaking when prying – remove the hoses evenly, without force, or with a slight twist.
- Forgotten fastening in the handles – the filter box then moves and may crack over time.
Reasons why the part is damaged
- Plastic aging and thermal stress in the engine compartment (brittleness, cracking).
- Mechanical damage when changing the filter or tampering with the suction (prying, pulling of clamps, torn handles).
- Vibration and loose fitting which will gradually cause cracks in the body of the filter box.
- Leaks due to a poorly fitted lid or deformed contact surfaces.
