Model Compatibility: Fits X3-compatible requiring a radiator hose replacement with identical form and function to the part. Part Number Match: Replaces part number PCH501730 as specified in the title for functional equivalence in compatible systems. Application Scope: Designed specifically as a replacement radiator hose for models designated as X3 compatible. Functional Purpose: Restores radiator hose functionality including coolant flow path integrity and connection interface alignment. Installation Requirement: Installs using the same mounting points and connections as the radiator hose in X3-compatible applications., Manufacturer: FILWY