The Worcester Bosch 87186842380 diverter valve assembly is a genuine OEM hydraulic control component designed to manage the flow of water between central heating and domestic hot water (DHW) circuits in compatible Worcester Bosch boilers. By directing heated water either to the radiators for space heating or to the hot water heat exchanger for DHW, this valve assembly plays a critical role in ensuring responsive and accurate delivery of heating and hot water based on demand. Manufactured to strict Worcester Bosch quality standards, it provides smooth actuation, reliable sealing, and long-term performance when replacing a worn or faulty diverter valve.

This diverter valve assembly is compatible with selected Worcester Bosch combi and system boiler models that specify part number 87186842380 in their technical documentation. Because compatibility can vary by boiler series, model year, and configuration, it’s recommended to verify suitability using your boiler’s exact model number and GC number before purchase.

Key features of the Worcester Bosch 87186842380 diverter valve assembly include its genuine Worcester Bosch construction for assured quality and fit, precise water routing between heating and DHW circuits to support responsive system performance, robust valve body and seals designed for long-term reliability, smooth integration into the boiler’s hydraulic control system, and dependable operation when installed by a qualified heating engineer.