Model Compatibility: Compatible with 2011 to 2018 engine coolant iron water hose applications as stated in the product title. Part Number Match: Matches model 7P0121070AC specifications for direct replacement of the existing engine coolant iron water hose component. Material Construction: Constructed from iron material to align with the equipment design for the specified vehicle years. Functional Purpose: Serves as a replacement part to restore standard engine coolant flow within the defined model range. Fitment Scope: Designed specifically for vehicles requiring part number 7P0121070AC between the model years 2011 and 2018 inclusive., Manufacturer: ZrXVCAexT