Checking hours…Mon–Fri 7:30am–5pm · Sat 9am–12pm01302 279234Trade account
Worcester Bosch Filling Loop CDi 87161073030

Worcester Bosch

Worcester Bosch Filling Loop CDi 87161073030

Worcester Bosch CDi filling loop, part 87161073030, used to top up central heating system pressure on compatible Worcester Bosch models.

At a glance

  • Part type: Filling loop (filling device)
  • Also known as 1015147
  • This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.
Manufacturer part no.
87161073030
GC number
H32-144
Showing prices

£71.28

£59.40 ex. VAT · VAT at 20%

In stock
Cut-off passed — dispatches next working day
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 CDi filling loop is a spare part used on central heating systems to top up system water pressure by hand. It is manufactured by Worcester Bosch and is listed against the CDi, Si and Junior appliance families shown in the compatibility list below. When system pressure drops below the level the boiler needs, the loop provides a controlled connection between the mains cold water supply and the heating circuit so water can be added until the pressure gauge reads correctly.

Signs this part needs replacing

  • Boiler pressure falls repeatedly and the system needs topping up often
  • Water is visible around the filling loop connections or valve body
  • The valve does not close fully after filling, so pressure keeps rising
  • The loop key or valve spindle is damaged, rounded or seized
  • System pressure does not rise when the loop is opened

Before you order

  • Check the GC number and model on the appliance data badge against the compatibility list
  • Confirm the part number on the existing component matches 87161073030 or one of the earlier numbers listed
  • 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.