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Worcester Bosch High Limit Thermostat K36-P2311-000 87161423140

Worcester Bosch

Worcester Bosch High Limit Thermostat K36-P2311-000 87161423140

High limit thermostat K36-P2311-000 for Worcester Bosch Heatslave oil combi boilers, supplied under part number 87161423140.

At a glance

  • Part type: High limit thermostat (thermostats, thermistors and sensors)
  • Also known as 1018057
  • This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.
Manufacturer part no.
87161423140
Showing prices

£43.10

£35.92 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 high limit thermostat, model reference K36-P2311-000, is a safety temperature control used in Worcester Heatslave oil combination boilers. It monitors the temperature of the appliance and interrupts the burner once the set limit is reached, preventing overheating and keeping operation within safe limits. It is supplied under Worcester Bosch part number 87161423140.

Signs this part needs replacing

  • The boiler locks out or shuts down part-way through a heating cycle before reaching the set temperature
  • Repeated high limit trips that need a manual reset to restore operation
  • Domestic hot water runs cooler than expected or fluctuates between hot and cold
  • The burner fails to fire, or cuts out shortly after ignition
  • A lockout or fault indication pointing to a temperature sensor or thermostat fault

Before you order

  • Check the appliance model and serial plate against the compatibility list before ordering.
  • Confirm the existing thermostat carries the model reference K36-P2311-000.
  • Cross-reference the alternative number 1018057 when checking against older documentation.
  • 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.