Product: Windshield Washer Reservoir Cap Compatibility: Citroen C4, DS5, Berlingo II (Berlingo 2), Jumpy II (Jumpy 2) Part numbers: 643238 / 643235 Why you need this cap Keeps washer fluid sealed and protected from leakage and contamination, ensuring reliable windshield cleaning. Restores proper sealing for vehicles with cracked, lost, or worn original caps so the washer system works as intended. Durable, flexible construction reduces the need for frequent replacements. Key features and benefits Material: Made from plastic that is leakproof, flexible, and impactresistant. Designed to resist wear and accidental drops. Function: Seals the windshield washer reservoir to prevent fluid loss and dirt ingress, helping maintain pump performance and nozzle spray. Fit: Designed to match the reservoir openings used on the listed Citroen models for a correct, tight seal and reliable performance. Marking: Includes a visible watermark/marking to help locate and identify the cap quickly during inspections or when replacing the part. Easy installation: Simple swap — remove the old cap and press the cap onto the reservoir until it seats securely. Ensure it is fully fitted and sealed to avoid leaks. Practical applications / use scenarios Replacement after damage: a cracked or missing cap after an impact or enginebay service to stop washer fluid leaks. Preventive maintenance: Install during routine servicing or before winter to prevent contamination and freezing of washer fluid. Post restore: Use when reinstalling the washer reservoir or after replacing related components to ensure correct sealing and system operation. What you get One windshield washer reservoir cap compatible with Citroen C4, DS5, Berlingo 2, and Jumpy 2 (part numbers 643238 / 643235). A directfit, durable replacement designed to restore sealing and protect the washer system. Installation notes Remove the old cap, align the cap on the reservoir neck, and press until it is fully seated. Confirm the cap is properly fitted and sealed before adding washer fluid to prevent leaks. Compatible models and part reference (do not modify): Citroen C4, DS5, Berlingo 2, Jumpy 2 — Part No. 643238 / 643235.