Description
Filter box without water-air exchanger for CITROEN C5 C8 PEUGEOT 607 807 cars with 2.0 and 2.2 HDI engines
Part description
This filter box (airbox) for Citroën/Peugeot serves as an air filter box and a connected part of the intake. It is an important part for the correct routing and filtration of the intake air, the protection of the intake tract and the stable operation of the engine. Being easily traceable by part number 9640454480 or 1427J3 is essential for many mechanics and home repairers alike.
The variant is without a water-to-air exchanger, which is key information for the correct fit of the design within the intake.
Technical information
- Manufacturer: Stellantis
- Model: Citroën C5, Citroën C8, Peugeot 607, Peugeot 807
- Other numbers: 1427J3
Product codes
- Product codes: 9640454480, 1427J3
Installation recommendations
Generally/typically applies to replacing the filter box (air filter housing) in Citroën/Peugeot cars – the exact steps may vary depending on the particular design of the intake.
1) Before assembly
- Compare with the old part: numbers 9640454480 / 1427J3, shape of the cabinet, attachment, hose connection and any nozzles.
- Check that it is a design without a water-to-air exchanger (must match what was in the car).
- Inspect the sealing surfaces, edges and plastic (cracks, deformation), the condition of the clips/grips and the fit of the lid.
2) Necessary tools and materials
- Normal set of gola/ratchet and bits, screwdrivers
- Pliers for clips/hose sleeves (according to design)
- Clean rags or a mild plastic cleaner for cleaning the contact surfaces
3) Step-by-step assembly procedure
- Turn off the ignition and let the engine cool down.
- Free access to the airbox (depending on the car design, it may be necessary to deflect the covers in the vicinity).
- Undo the clamps/sleeves and disconnect the hoses connected to the filter box and the connected suction.
- Open the filter box and remove the air filter (if it is part of the disassembly).
- Unscrew/unlock the fixing of the filter box in the engine compartment.
- Carefully remove the old filter box so as not to damage the hoses and surrounding plastic parts.
- Clean the seating surfaces and check that there is no dirt left in the suction pipe.
- Place the new (used) filter box in place and secure it in place.
- Install the air filter and close the lid of the filter box correctly (it must fit all the way around).
- Reconnect all hoses and tighten/snap to secure the clamps and clips.
- Check that no hoses are broken, pinched or out of the spigot.
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4) Post-assembly checks and test drive/function verification
- Start the engine and listen for any hissing/sucking in fake air around the intake.
- Visual check that the filter box is holding firmly and nothing is touching moving parts.
- After a short drive, recheck the tightness of the sleeves and the correct seating of the lid.
5) The most common assembly mistakes + how to avoid them
- Filter box lid leak – clean the seating surfaces and check that they click properly all around.
- Incorrectly fitted hose/loose socket – always tighten and visually check that the hose fits all the way.
- Exchange design – make sure it is a variant without a water-to-air exchanger and the part numbers match.
- Plastic cracks after stretching/improper handling – tighten with sensitivity and proceed with care when disassembling/prying.
Reasons why the part is damaged
- Plastic aging due to heat and vibration – formation of microcracks and subsequent suction leaks.
- Unprofessional disassembly (prying, breaking handles, pulled threads/handles).
- Leaky or poorly tightened sockets and long-term stress on the sockets.
- Clogged filter and higher suction resistance, which unnecessarily burdens the cabinet and connections (in the long term).
- Contact with other parts (abrasions, abrasions) in case of poor seating or lack of attachment.
