Description
Complete set of headlight washer nozzles including caps for Citroën C4 Picasso vehicles. Color KGQ – Kyanos Blue.
Product Overview
High-quality complete set of headlight washer nozzles and matching caps designed for Citroën C4 Picasso models. These washer jets restore proper spray pattern and appearance to the headlamp washer system while matching the vehicle’s original Kyanos Blue (KGQ) trim color. Ideal for professional workshops and DIY mechanics who need an exact-fit replacement part referenced by product codes 6438T4, 6438T5 and 7414SG.
Function And Benefits
Headlight washer nozzles deliver a concentrated jet of washer fluid to clean headlamp lenses, improving nighttime visibility and ensuring optimal performance of adaptive lighting systems. Replacing worn or damaged nozzles restores correct spray coverage, prevents fluid leakage, and maintains the original exterior appearance thanks to matching caps in Kyanos Blue.
Compatibility
Designed for use on Citroën C4 Picasso models. Commonly referenced under the product codes and color codes listed below. Suitable for technicians looking up parts by reference number.
Technical Information
- Manufacturer: Stellantis (Citroën / Peugeot)
- Model: Citroën C4 Picasso (including C4 Grand Picasso applications)
- Product Codes: 6438T4, 6438T5, 7414SG
- Other Numbers: KGQC, KGQ (Color: Kyanos Blue)
Installation Recommendations
- Work Safely: Use appropriate hand protection and eye protection. Follow the vehicle manufacturer’s recommended procedures for removing trim or accessing the washer nozzle area.
- Access: Nozzles are typically mounted in the front bumper or headlamp surround. On many vehicles you can activate the washer system to extend the nozzle, then release the retaining clip and pull the nozzle forward. In other cases partial bumper or wheel-arch trim removal may be required for full access.
- Disconnecting: Avoid impacting electrical connectors; there are usually no electrical connections on the nozzle itself, but take care with nearby sensors and wiring.
- Replacement Steps: 1) Extend the nozzle by activating the washer system or manually if required. 2) Release the retaining clip and disconnect the washer hose. 3) Remove the old nozzle and fit the new unit until the clip engages. 4) Reconnect hose, retract/park nozzle, and verify correct operation and spray pattern. 5) Check for leaks and proper cap alignment.
- Final Check: Test the washer function and headlight cleaning cycle. Ensure spray reaches the lens evenly and that caps are flush with the bumper for a factory look.
Most Common Failure Reasons
- Mechanical Damage: Impact from road debris or minor collisions can crack or break the nozzle or cap.
- UV And Weathering: Caps and clips can become brittle, fade, or crack over years of sun exposure and temperature cycles.
- Blockage: Dirt, paint overspray or mineral deposits from hard water can clog the nozzle or alter spray pattern.
- Freezing: Water left in the system can freeze and deform plastic components in cold climates.
- Age-Related Wear: Retaining clips and seals lose elasticity over time, leading to loose fitment or leaks.
Replacing the nozzle and cap assembly restores correct washer performance and prevents further wear to the washer pump and plumbing caused by leaks or misdirected sprays. For professional-grade results, carry out installation in a workshop environment and verify spray alignment after fitting.
