The Worcester Bosch 87161126100 Greenstar main harness is a genuine OEM wiring assembly designed to provide the primary electrical connection backbone within compatible Worcester Bosch Greenstar boilers. This harness links major electrical and control components—such as the control box, sensors, actuators, switches, pumps, and user interfaces—ensuring reliable signal transmission and power distribution throughout the boiler’s electronic system. Manufactured to original equipment standards, it delivers consistent electrical integrity, correct pin-to-function mapping, and long-term reliability when replacing a worn, damaged, or corroded harness.

This main harness is compatible with specific Worcester Bosch Greenstar boiler models that specify part number 87161126100 in their technical documentation. Because wiring configurations can vary by boiler series, production year, and control system version, it’s recommended to confirm compatibility using your boiler’s exact model number and GC number before ordering.

Key features of the Worcester Bosch 87161126100 Greenstar main harness include its genuine Worcester Bosch construction for assured quality and compatibility, precision-mapped wiring to maintain correct connections between control and functional components, durable insulation and connector materials suited to the boiler’s operating environment, seamless integration with the boiler’s electrical and control system when installed by a qualified heating engineer, and essential contribution to reliable boiler communication and operation.