Checking hours…Mon–Fri 7:30am–5pm · Sat 9am–12pm01302 279234Trade account
Hanicks
Basket
Worcester Bosch Expansion Vessel Complete 8716119294

Worcester Bosch

Worcester Bosch Expansion Vessel Complete 8716119294

Worcester Bosch 8716119294 complete expansion vessel for Greenstar and Danesmoor gas appliances, absorbing system pressure changes.

At a glance

  • Part type: Expansion vessel
  • Also known as 1013105, N7551
  • This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.
Manufacturer part no.
8716119294
GC number
H21-242
Showing prices

£189.24

£157.70 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 8716119294 is a complete expansion vessel for Worcester Bosch gas appliances. It sits on the heating circuit and absorbs the volume change as system water heats and cools, holding pressure steady instead of letting it swing against the pressure relief valve. The vessel is a sealed unit with a diaphragm dividing the water side from a pre-charged air side, and it is listed under the expansion vessels, tanks and cylinders component group.

Signs this part needs replacing

  • System pressure climbs quickly as the appliance heats up and falls again once it cools
  • The appliance needs topping up regularly to hold pressure
  • Water is discharging from the pressure relief valve during normal running
  • Water or air escapes from the vessel's charge valve when it is checked
  • The vessel feels heavy, corroded or full of water when tapped or drained

Before you order

  • Check the GC number and the appliance data plate to confirm the vessel matches the model being worked on
  • Confirm the previous part numbers 8-715-407-288-0 and 87154072880 against the unit before ordering
  • Check whether a sealing washer or gasket is needed for the connection
  • 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.