Worcester Bosch Inlet Control Group 87161155090

The Worcester Bosch 87161155090 is an inlet control group — the factory-built assembly that governs the incoming mains water supply into the appliance. It brings the inlet isolation valve, filling loop connections and associated control components together as a single serviceable unit, so the water supply can be isolated and regulated from one point on the boiler.

It is supplied by Worcester Bosch for the Greenstore combi soft start range and Greenskies appliances, and is the part to specify when the inlet side of the appliance needs to be replaced as a complete assembly rather than component by component.

• Water weeping or tracking from the valve body, spindle or connection points
• The appliance losing system pressure repeatedly, or failing to hold pressure after topping up
• The filling loop failing to isolate or passing water when closed
• Limescale or debris restricting flow through the inlet, giving reduced hot water performance
• Stiff, seized or rounded isolation valve handles that will not shut the supply off cleanly

• Check the model and serial number on the appliance data badge against the compatibility list before ordering
• Confirm the part number on the existing component matches 87161155090, as Worcester Bosch inlet assemblies vary between appliance variants
• Note the alternative number 1022048 when cross-referencing against older documentation
• This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.