Compatibility Fits Chevrolet Bolt EV and Chevrolet Camaro model years 2017, 2018, 2019, 2020. Part number/reference: 13227300 (Windscreen Washer Bottle Cover / Windshield Washer Reservoir Cap). Why you need this cap Prevents leaks and overflow from the windshield washer fluid reservoir by restoring a proper seal. Stops dirt, debris and moisture from entering the reservoir so the washer system continues to perform reliably. Replaces cracked, warped or missing caps caused by heat, age or mechanical stress. Key features and benefits Material: Made from durable, quality plastic designed to withstand everyday underhood conditions. Function: Acts as a direct replacement cap for the windshield washer fluid reservoir, ensuring a tight seal with the existing gasket. Performance: Helps reduce fluid evaporation and contamination, maintaining washer system effectiveness between services. Easy replacement: Simple removal of the old cap and installation of the one — press into place and verify the gasket forms a secure seal. Typical applications / use scenarios 1) Post replacement: After replacing a damaged reservoir or noticing leaks, install this cap to stop fluid loss and prevent enginebay residue. 2) Preventive maintenance before travel: Fit the cap before a long trip to ensure the washer system remains sealed and ready for extended use. 3) Weather preparedness: an aged or brittle cap before winter or summer to minimize contamination and evaporation in extreme temperatures. Installation notes Remove the old cap, check the gasket for proper seating or gasket if needed, then install the cap by pressing it into place until it is fully seated and sealed. Verify visually that the cap sits flush and does not move; correct installation restores reservoir integrity. What's included One windshield washer reservoir cap compatible with Chevrolet Bolt EV and Camaro 2017–2020 (part number 13227300). This cap is a practical, durable replacement designed to restore proper function to the windshield washer fluid reservoir on the listed Chevrolet models.