Model Compatibility: Fits W205 and A3 vehicles as a direct replacement for the specified radiator hose application. Part Reference: Designed as a functional substitute for component PCH501910 to restore cooling system connectivity. System Function: Serves as a replacement conduit to maintain standard coolant flow within the designated vehicle models. Installation Scope: Intended for direct installation in place of the existing hose on compatible W205 and A3 units. Specification Match: Manufactured to align with the physical requirements of the PCH501910 application for proper fitment., Manufacturer: YRzPeYCEM