The Mack 301KC33 Synchronizer Pre-Load Pin is a synchronizer preload component, also listed as Mack 301KC33 Lufasco Synchronizer Pre-Load Pin. It bears the part number 301KC33 and is used to establish preload within synchronizer assemblies. Cross-referenced for Mack and Lufasco synchronizers, this pin serves as a direct replacement part where the 301KC33 designation applies.
