Caterpillar 3J-2974 Valve Stem

Caterpillar 3J-2974 Valve Stem is a valve stem component identified by Cat part number 3J-2974 and described in official catalogs simply as a Valve Stem, with the designation indicating its role as a critical cylindrical stem element used in specific Caterpillar valve assemblies to actuate internal passages. Cat Parts Store and regional catalog pages show related entries—3J-0974 is listed as VÁSTAGO, the Spanish term for stem—illustrating how Caterpillar labels this family of components across languages and confirming its place in the valve subsystem lineup. Third-party listings referenced as '3J2974 Stem' corroborate the same identity, aligning with the broader naming conventions Caterpillar applies to internal valve-control components and helping buyers verify that different sellers are indeed referring to the same part. Because this part is a specialized component, verify fitment against your specific Cat valve model and serial number in the machine's parts manual or through Cat Parts Store before purchasing to ensure correct engagement with the corresponding valve body and actuation mechanism.