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Worcester Bosch Hot Water Therm Harn with Plug 87161201390

Worcester Bosch

Worcester Bosch Hot Water Therm Harn with Plug 87161201390

Hot water thermistor harness with plug for Worcester Bosch Heatslave oil combi boilers.

At a glance

  • Also known as HOT-WATER-THERM-HARN-WITH-PLUG, 1015795
Manufacturer part no.
87161201390
Showing prices

£12.01

£10.01 ex. VAT · VAT at 20%

Available to order · 7 working days
Available to order · 7 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 Hot Water Therm Harn with Plug is a hot water thermistor wiring harness manufactured by Worcester Bosch. It carries the hot water temperature sensor signal back to the boiler control on Heatslave oil combi models, supplying the control with the readings it needs to regulate domestic hot water. The assembly is supplied with its plug connector fitted.

Signs this part needs replacing

  • Domestic hot water runs hot then cold, or the temperature is erratic
  • Hot water delivered at the tap does not match the setting on the boiler control
  • Boiler fails to respond to demand for hot water, or locks out intermittently
  • Visible damage, corrosion or overheating at the harness plug or along the lead
  • Fault code or diagnostic reading pointing to the hot water thermistor circuit

Before you order

  • Confirm the boiler model and build date against the fit list above
  • Check the existing harness plug for physical damage and correct seating before condemning the part
  • Verify the fault lies with the harness or thermistor circuit rather than the control board
  • Have the manufacturer part number 87161201390 to hand when ordering

Not sure which part?

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