1P4579 Flange Half Replacement for Caterpillar (CAT) equipment Product overview This 1P4579 flange half is a directfit replacement component designed to restore the mating half of a split flange assembly used on Caterpillar equipment. It is engineered to match OEM reference 1P4579 so installation is straightforward and alignment with the corresponding flange half is maintained. Key benefits Direct replacement: Matches the 1P4579 reference and fits Caterpillar equipment that uses this flange half, reducing the need for custom fitting or machining. Restores secure connection: Replaces worn or damaged flange halves to recover correct mating surfaces and maintain proper joint integrity. Minimizes downtime: Simple installation cuts time during field service or scheduled maintenance. Consistent fit and function: Manufactured to meet OEM dimensional requirements to preserve alignment, bolt pattern, and torque characteristics. Durable service life: Produced to withstand the stresses typical of heavy equipment flange applications, helping avoid recurring failures. Important attributes Function: Half of a split flange assembly used to join components such as shafts, couplings, or piping interfaces. Compatibility: Designed to fit equipment that specifies part number 1P4579 for Caterpillar applications. Size and fit: Produced to match OEM dimensions and bolt patterns for direct replacement without modification. Material and construction: Manufactured to comply with OEM material and tolerance expectations for heavy equipment use. Performance: Restores original mechanical alignment and sealing surfaces to ensure reliable operation of the assembled system. Typical applications Field of hydraulic pump or motor flange connections on Caterpillar excavators and loaders where the original flange half is worn or damaged. Workshop rebuild of powertrain or accessory assemblies that require replacement of the flange half to restore correct coupling alignment. Scheduled maintenance on generator sets or stationary equipment using compatible Caterpillar components to maintain reliable joint integrity. Notes for installers Verify that the equipment lists 1P4579 as the required part number before installation. Inspect the mating flange half and fasteners for wear or damage and as needed to ensure proper joint performance. Tighten bolts to the equipment manufacturer recommended torque values and check alignment during reassembly. This flange half is intended as a likeforlike replacement to help maintain the original fit and function of assemblies that specify part number 1P4579 for Caterpillar equipment.