Caterpillar 9T-8629 Shaft

Caterpillar 9T-8629 Shaft is an OEM Cat part listed in Caterpillar's official Parts Store as a shaft component identified by the part number 9T-8629. In Cat documentation it is described as a replacement shaft, and the catalog notes that 9T-8629 replaces other parts numbers in certain pump configurations. The entry places the part in the Shaft category and aligns it with hydraulic piston pump components used in Cat equipment, indicating its role as the drive shaft within hydraulic pump assemblies. Retail listings for 9T-8629 also present it as a direct replacement shaft for Caterpillar equipment, underscoring its function as a service part intended to restore pump operation when a shaft is worn or damaged. Because it is an OEM component, 9T-8629 is designed to match Caterpillar specifications and fitment requirements for hydraulic pump systems in compatible Cat machines. When selecting this part, buyers typically verify compatibility with the specific pump model and Cat machine series in which the shaft is listed, ensuring correct engagement with drive gears and associated pump internals. This shaft designation helps technicians source an authentic Caterpillar replacement to maintain hydraulic performance and reliability in service-critical pump assemblies.