Worcester Bosch Pump 8716120416

This is a circulation pump manufactured by Worcester Bosch and supplied under part number 8716120416. It is the component that moves water around the heating circuit and, on combi appliances, through the domestic hot water side of the boiler. It sits within the Worcester Bosch spares range and is listed against a broad spread of Worcester combi, oil system and oil boiler appliances.

• No heating or no hot water, with the boiler firing but the radiators staying cold
• The pump running hot, humming loudly or making grinding or scraping noises
• Boiler locking out or tripping on overheat shortly after a demand for heat
• Pump head not turning when checked, or no differential across the pump ports
• Intermittent heating where the appliance works only after the pump is tapped or the system is bled

• Check the GC number and appliance serial plate against the compatibility list to confirm the correct pump for your model
• Cross-check any previous part number on the old pump against the alternative numbers listed below
• Confirm the pump body connection and sealing arrangement on the appliance before fitting
• On oil appliances, isolate the fuel and power supply and follow the manufacturer's commissioning procedure after replacement