Car Wiper Spray Bottle Cap - Protects the spray nozzle: covers the washer bottle to prevent debris or other objects from entering and blocking the spray port, helping maintain clear windshield spray. - Heat resistant and sealing: made of heat resistant plastic that ensures a reliable seal even under high pressure, helps prevent leakage, and supports long term reliability. - Engine and cooling role: this bottle cap plays a vital role in maintaining your engine, ensuring that the cooling remains sealed and pressurized. - Durable material for all weather: replacement car washer bottle cap is made of plastic to ensure long lasting performance even in adverse weather conditions. - Replacement compatibility: designed as a replacement cap for car washer bottles, providing a straightforward upgrade to restore performance when the original cap is worn or damaged. Use scenarios - Routine maintenance: replace a worn or damaged cap to prevent leaks and ensure consistent spray performance during windshield cleaning. - Dusty or debris-prone environments: use to shield the nozzle from dirt and debris that can cause blockages or spray issues. - Extreme temperatures or weather: rely on the heat resistant plastic to maintain sealing and spray reliability in harsh outdoor conditions.