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Worcester Bosch STB 89.11 TK,100-120,3000 EVERP 7747022527

Worcester Bosch

Worcester Bosch STB 89.11 TK,100-120,3000 EVERP 7747022527

Worcester Bosch spare part 7747022527, designated STB 89.11 TK,100-120,3000 EVERP, for Boulter Buderus 4321 and 4322 appliances.

At a glance

  • Appliance family: Boulter Buderus 4321 and 4322
  • Also known as 1020511
Manufacturer part no.
7747022527
Showing prices

£69.85

£58.21 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 STB 89.11 TK,100-120,3000 EVERP is a Worcester Bosch spare part supplied under part number 7747022527. It is listed for use with the Boulter Buderus 4321 and 4322 appliances. Refer to the manufacturer's parts list for its position and function within the appliance.

Signs this part needs replacing

  • A fault code or lockout that the manufacturer's fault-finding guide attributes to this component.
  • The appliance fails to start or shuts down unexpectedly during operation.
  • Intermittent or inconsistent appliance behaviour traced to this part during diagnosis.
  • Visible damage, contamination or deterioration at the component.

Before you order

  • Check the appliance data plate to confirm the model is a Boulter Buderus 4321 or 4322.
  • Confirm the part number on the existing component or in the manufacturer's parts list matches 7747022527.
  • If the fault is not confirmed, have the appliance diagnosed by a qualified heating engineer before ordering.

Not sure which part?

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