43851 VALVE PLUG-CHROMED 7FR,15FR

SKU: 2751

Genuine CAT Pumps part 43851, a chrome-plated brass valve plug (CAT material code BBCP) that caps the valve assemblies in the pump head. CAT's 530 and 550 pump datasheets list it as ‘Plug, Valve’ with six required per pump, paired with o-ring 17617 (90-durometer NBR) directly above it on the parts list. The catalog name claims 7FR and 15FR fitment, which no retrieved source confirmed — verify your model against CAT's parts breakdown before ordering. Listed as SKU 2751.