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Worcester Bosch Blanking Plug Brass 8716118461

Worcester Bosch

Worcester Bosch Blanking Plug Brass 8716118461

Brass blanking plug for Worcester Bosch Greenstar Highflow boilers, part 8716118461, sealing unused ports on the hydraulic assembly.

At a glance

  • Part type: Caps and plugs (blanking plug)
  • Also known as 2245077
  • This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.
Manufacturer part no.
8716118461
GC number
H27-479
Showing prices

£28.32

£23.60 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 8716118461 is a brass blanking plug used to close off an unused threaded port on the hydraulic assembly of Greenstar Highflow boilers. It seals the tapping so that water cannot escape where no pipe or fitting is connected. Brass is used because it holds a thread well and resists corrosion in the damp environment inside a boiler casing.

Signs this part needs replacing

  • A drip or weep from the plugged port, often visible as a bead of water on the brass
  • Damp staining, limescale trails or crusting around the plug and the surrounding casing
  • Green or white corrosion deposits on the brass body or the thread
  • System pressure falling with no other obvious source of loss
  • A seized or rounded hex head that will not tighten down cleanly

Before you order

  • Check the GC number and serial plate on the appliance against the compatibility list before ordering.
  • The earlier numbers 8-710-506-247-0 and 87105062470 identify the same plug, so either may appear on older paperwork.
  • Confirm the condition of the sealing washer at the port before refitting the plug.
  • 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.