Worcester Greenstar Gas Valve Sit 848 – Pre-Owned | Part No. 87161165150

Ignition faults, unstable flame, or inconsistent heating across the very wide Worcester Greenstar CDI, CDI Classic, FS, and Highflow ranges are common signs of a gas valve no longer regulating fuel supply correctly. The Worcester Greenstar Gas Valve Sit 848, Part No. 87161165150, is the genuine replacement that controls gas supply inside the boiler, restoring stable burner performance across this extensive compatibility range.

This is a pre-owned part, inspected and tested before dispatch to ensure safe and reliable operation.

Compatible Boiler Models

Inspected & Tested. Backed by Warranty.

This 87161165150 valve helps resolve ignition faults, unstable flame, and heating inconsistencies across an exceptionally broad range of Worcester Greenstar models. Supplied with a 6-month warranty.

Delivery & Returns

Orders placed before 1:00 PM are dispatched the same working day, with standard or next-day courier delivery available. Returns are accepted within 30 days if the item is unused and in its original condition.

Important Safety Note: Please confirm that part number 87161165150 matches your existing unit before ordering. Gas valves must always be installed by a Gas Safe registered engineer, with a full gas-tightness test before the boiler is returned to service.