Worcester Bosch Secondary Heat Exchanger Final Assembly 87161124300

The Worcester Bosch 87161124300 is a secondary heat exchanger final assembly, supplied as a complete unit for the Greenstar Camray range. It sits on the domestic hot water side of the appliance and transfers heat from the primary water circuit into the stored or drawn hot water supply. Because it is supplied as a final assembly, the unit arrives ready to fit in place of the original component.

• Domestic hot water running cool or failing to reach the set temperature while the heating circuit performs normally
• Hot water temperature fluctuating sharply during a draw-off
• Water weeping or staining around the heat exchanger body or its connections
• Reduced hot water flow rate caused by scale or debris restricting the secondary side
• Kettling, rumbling or repeated overheat lockouts traced to a blocked or scaled exchanger

• Check the appliance model and GC number against the compatibility list below before ordering, as the same part number is used across several Camray variants
• Confirm that 87161124300 matches the number shown in your appliance's parts list, and note the alternative number 1030173 where it appears on older documentation
• Check whether new seals or gaskets are needed to refit the assembly, as these are not listed with this part
• This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.