The Worcester Bosch 87161051110 Water Pressure Switch is a genuine replacement safety component designed to monitor and control the flow of water within your boiler’s system. By sensing correct water pressure levels, this switch helps ensure that the boiler only operates when safe conditions are met, preventing damage from low pressure situations and supporting reliable ignition and heating performance. It plays a vital role in protecting pumps, heat exchangers and other internal components from stress caused by insufficient water flow.

This pressure switch is specifically compatible with Worcester Bosch Junior FSN and Junior FSP boilers, making it ideal for use on those models that reference part number 87161051110. Before installation, always confirm the existing part number on your boiler’s old pressure switch or check the appliance’s service documentation to ensure correct match and fit.

Designed for easy replacement, the 87161051110 Water Pressure Switch connects directly with existing tubing and mounting points, restoring proper pressure monitoring without modification. Choosing this genuine Worcester Bosch part helps your Junior boiler maintain safe water pressure regulation and dependable heating performance.