The Worcester 87161051300 Mechanical Programmer is a genuine control accessory designed to provide simple, dependable scheduling for your heating and hot water system. This mechanical programmer lets you set daily on/off periods so your boiler runs when you need it most, helping to improve comfort and manage energy use without complex digital interfaces. The easy-to-use dial and switches make adjusting time periods and viewing current settings intuitive and straightforward.

This mechanical programmer is compatible with Worcester and Worcester Bosch boilers and systems that specify part number 87161051300 for basic time control functionality. To ensure correct fitment and operation, always verify the part number on your existing programmer or consult your boiler’s documentation before installation, as control interfaces and programmer configurations vary between models.

Designed for direct replacement, the 87161051300 Mechanical Programmer interfaces with the boiler’s existing control wiring and mounting points without modification. Choosing this genuine Worcester Bosch programmer restores reliable, user-friendly time control over your heating and hot water routines in compatible systems.