Dorman HVAC Heater Hose Connectors are made to resist brittleness, cracking, and coolant leaks. The hose is designed to withstand extreme temperatures from the engine's coolant for long-lasting durability. Additionally, the Y-connector material is upgraded from plastic to aluminum to prolong the service life of the part. All Dorman products are engineered in the United States and backed by 100 years of automotive aftermarket experience. Our solutions are thoroughly tested and inspected, and if you experience any difficulty installing or using our parts, we have a dedicated technical support team of ASE Blue Seal certified professionals ready to help. To learn more about our quality and innovation, visit DormanProducts.com.