Purpose: The overflow pipe is crucial for maintaining a stable cooling system. It serves as a drain for excess fluid when the radiator's internal pressure is too high, extending engine time. Material: This automotive radiator hose set is made of specialized materials to improve cooling efficiency, increase practicality, and maintain stable performance. Easy Installation: Installation is simple, requiring no modification or drilling. This hose directly replaces old or damaged radiator coolant hoses for easy installation. Performance: The radiator overflow hose effectively maintains the engine cooling system, prevents air and oil leaks, and improves driving performance. Note: We are committed to providing after-sales service to all customers. If the product is not suitable for you or you have any dissatisfaction, please let us know, and our team will reply to you within 24 hours., Manufacturer: NNBINK