Checking hours…Mon–Fri 7:30am–5pm · Sat 9am–12pm01302 279234Trade account
Worcester Bosch DHW Thermostat K36-P1340-000 87161423130

Worcester Bosch

Worcester Bosch DHW Thermostat K36-P1340-000 87161423130

Worcester Bosch DHW thermostat (K36-P1340-000), part 87161423130, for Heatslave and Heat Slave oil combi models; regulates domestic hot water temperature.

At a glance

  • Part type: Thermostats, Thermistors & Sensors
  • Also known as WB87161423130, 1018055
  • This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.
Manufacturer part no.
87161423130
Showing prices

£45.20

£37.67 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

This is a domestic hot water (DHW) thermostat manufactured by Worcester Bosch, supplied under part number 87161423130 and referenced as K36-P1340-000. It sits within the Worcester Bosch spares range for oil-fired combi appliances and monitors the stored or delivered hot water temperature so the appliance can hold a steady domestic hot water setpoint. The thermostat forms part of the DHW control circuit, feeding temperature information back to the appliance so that burner operation and hot water delivery stay within the intended range.

Signs this part needs replacing

  • Domestic hot water runs consistently too hot or too cool regardless of the setpoint
  • Hot water temperature swings noticeably during draw-off instead of holding steady
  • The appliance fails to modulate or shut down correctly on the DHW side
  • Intermittent hot water faults or temperature-related fault codes logged by the appliance
  • Visible damage, corrosion or a loose or degraded sensor probe at the thermostat

Before you order

  • Check the appliance model and serial plate against the compatibility list to confirm this thermostat suits your unit
  • Cross-check the part number on the existing component against 87161423130 and the alternative numbers listed
  • Inspect the surrounding seals and connections while the appliance is open, and replace any that are perished
  • 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.