Compatible With Benz C109 W176 W246 C117 A209 C209 C216 W203 W205 S205 C205 W213 — Windshield Washer Fluid Bottle Tank Cap (Part No. 2038690108) Why you need this cap Protects the washer reservoir from dirt, water and debris that can clog pumps and nozzles. Prevents leaks and preserves washer fluid quality for reliable windshield cleaning. Restores proper sealing after a cracked, missing, or worn original cap. Key features Exact compatibility: Designed to fit the Benz models listed above and part number 2038690108. Durable material: Made from brand , impactresistant, UVresistant plastic for long service life and resistance to sun damage. Secure seal: Designed to provide a leak, reliable closure to the washer fluid bottle. Dustproof and waterproof: Prevents contaminants from entering the reservoir, maintaining fluid purity and nozzle performance. Performance and benefits Maintains washer system effectiveness: Keeps fluid clean so the pump and jets operate at peak efficiency. Reduces maintenance needs: A proper seal lowers the chance of foreign matter entering the system and causing blockages or premature wear. Longterm value: Robust construction resists cracking and degradation from heat and UV exposure. Simple installation No tools required. Remove the old gasket cover, place the tank cap onto the gasket, and press until it seats securely. Practical use scenarios a cracked or missing washer fluid cap after an accidental impact or wear to stop leaks and contamination. During regular vehicle maintenance or fluid replacement to ensure a fresh, secure seal for the reservoir. Preparing a Benz vehicle for or inspection to demonstrate a fully functional, wellmaintained washer system. Fitment and function remain consistent with the original part and models listed.