Description
Complete set of headlight washer nozzles with caps for CITROEN C4 PICASSO cars
Color KGQ – COLOR BLUE KYANOS
Part description
This set of headlight washer nozzles is designed for Citroën C4 Picasso cars and comes with covers. It is a used original car part of the Stellantis Citroën Peugeot group, which is particularly sought after under the product numbers 6438T4, 6438T5 and 7414SG.
The part is suitable as a replacement in case of damage, loss or malfunction of the headlight washer. Another advantage is the KGQ – Kyanos blue color design, which can facilitate matching with the car without the need for additional modifications.
Technical information
- Manufacturer: Stellantis Citroën Peugeot
- Model: Citroën C4 Picasso
- Other numbers: KGQC, 7414SG
Product codes
- Product codes: 6438T4, 6438T5, 7414SG
- Models: Citroën C4 Picasso
Installation recommendations
Since the documents do not contain an exact installation procedure for a specific car model, below is a general procedure typically used to replace a set of headlight washer nozzles with caps. The exact steps may vary depending on the specific design of the bumper and the spray system.
1) Before assembly
- Check whether the new part matches the old piece in terms of shape, attachment, design of nozzles and covers.
- Compare the markings 6438T4, 6438T5, 7414SG and color version KGQ.
- Check the condition of the attachment, latches, plastic parts and possible connection points of the tubes.
- On the used part, check that the nozzles are not clogged or mechanically damaged.
2) Necessary tools and materials
- Basic set of hand tools
- Plastic pry bar for removing trim or covers
- Clean rags
- Cleaning agent suitable for plastic parts
- Container or absorbent material for catching liquid residues
3) Step-by-step assembly procedure
- Secure the vehicle securely against movement and prepare your work space.
- According to access to the part, remove the cover or surrounding parts that prevent access to the headlight washer.
- Carefully release the original cap and the actual nozzle so as not to damage the holders or the surrounding plastics.
- Disconnect the fluid supply, if connected, and capture any residual fluid leakage.
- Remove the original part and compare it with the prepared kit, including the shape of the covers and the mounting.
- Clean the contact surfaces and the surroundings of the installation site from dirt and deposits.
- Install the nozzle in the correct position and check that it sits without tension and fits correctly in the mount.
- Connect the fluid supply and verify that the connection is tight and there are no signs of leakage.
- Install the cover and check its correct seating, appearance and continuity with the surrounding body parts.
- Return any cover or access parts removed.
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4) Post-assembly checks and test drive/function verification
- Verify that the part holds firmly and does not come loose anywhere.
- Check the washer system for fluid leaks.
- Test the flushing function and see if the liquid passes without any apparent restriction.
- Check that the cap fits correctly and does not interfere with the surrounding parts.
- After a short ride, recheck the mounting and any traces of fluid leakage.
5) The most common assembly mistakes + how to avoid them
- Exchanging a part for a different design – always compare the numbers and shape of the old and new part before assembly.
- Damage to latches or cover – use appropriate force and suitable plastic tools during disassembly and assembly.
- Insufficient tubing seating – always check the strength of the connection after connection.
- Mechanical damage during parking or minor impact to the front of the car.
- Cracking or breakage of the cap due to operational wear.
- Damage to plastic holders during careless disassembly.
- Clogging or impaired function of the washer due to dirt in the system.
- The effect of frost, the age of the material and normal fatigue of plastic parts.







