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Worcester Bosch Dummy Stepper Motor 87161068190

Worcester Bosch

Worcester Bosch Dummy Stepper Motor 87161068190

Worcester Bosch dummy stepper motor 87161068190, a hydraulics component for Greenstar and British Gas 430/I boiler models.

At a glance

  • Part type: Diverter valves and hydraulics
  • Also known as 1015089
  • This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.
Manufacturer part no.
87161068190
GC number
H37-295
Showing prices

£8.52

£7.10 ex. VAT · VAT at 20%

Available to order · 3 working days
Available to order · 3 working days
Not certain it's the right part? The technical team verifies fitment before dispatch — no charge, and it stops a second trip.Call the technical teamSend a technical question

Same-day dispatch

Ordered by 4pm Mon–Fri, 10:30am Sat.

30-day returns

Unused, in original packaging.

What it is

The Worcester Bosch 87161068190 is a dummy stepper motor supplied as part of the boiler's hydraulics group. It sits within the diverter valve and hydraulics assembly, where the motor drives the moving components that redirect water between the heating circuit and the domestic hot water circuit. It is a Worcester Bosch component intended for the Greenstar and British Gas appliance families listed in the compatibility data below.

Signs this part needs replacing

  • The diverter valve fails to change over between heating and hot water, leaving one mode permanently cold.
  • Domestic hot water runs hot and cold in cycles while a tap is open.
  • The boiler reports a diverter or hydraulics related fault code and locks out.
  • Radiators warm up when only hot water is demanded, or hot water is produced when only heating is called for.
  • The motor head shows no movement or audible response when the appliance is switched between modes.

Before you order

  • Check the GC number on the appliance data badge against the compatibility list, as several Greenstar and British Gas variants use different hydraulic assemblies.
  • Confirm the model and, where relevant, the serial number before ordering, since Worcester Bosch produced this hydraulic group across a number of build periods.
  • This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.

Not sure which part?

Search by part number, product name or brand — our technical team confirms fitment before anything is dispatched.