The Worcester Bosch 87110042320 Washer – 80mm is a genuine replacement washer engineered for use with selected Worcester Bosch boiler models. Designed to provide a reliable seal where pipework and components connect, this 80mm washer plays a key role in preventing leaks, ensuring stable pressure, and maintaining the efficiency and safety of the heating system. Manufactured to the exacting standards expected from Worcester Bosch parts, this washer delivers dependable performance and long-lasting durability when fitted correctly by a qualified engineer.

Compatibility includes Worcester Bosch Ri and CDi series boilers as well as Greenstar models that utilise the 80mm washer specification. Suitable for use during servicing, routine maintenance, or component replacement, this washer helps maintain the integrity of water and gas connections within the boiler. Choosing a genuine Worcester Bosch washer helps ensure correct fitment, preserves system performance, and supports ongoing reliability throughout the life of the boiler.