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Worcester Bosch Secondary Heat Exchanger 31 Tube Final Assembly 87186806390

Worcester Bosch

Worcester Bosch Secondary Heat Exchanger 31 Tube Final Assembly 87186806390

Secondary heat exchanger, 31 tube final assembly for Worcester Bosch Greenstar Danesmoor HE 50/70-OOO-GB appliances after FD882.

At a glance

  • Also known as 2246523
Manufacturer part no.
87186806390
Showing prices

£2,501.83

£2,084.86 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 Worcester Bosch 87186806390 is a secondary heat exchanger supplied as a 31 tube final assembly. It is used in Worcester Bosch Greenstar Danesmoor HE 50/70-OOO-GB appliances built after FD882, where it transfers heat within the appliance's water circuit.

Signs this part needs replacing

  • Water weeping or staining around the heat exchanger body
  • Reduced heating or hot water performance
  • Kettling, banging or gurgling from the appliance
  • Scale or sludge restricting flow through the tubes
  • Visible corrosion or pitting on the tube assembly

Before you order

  • Confirm the appliance is a Greenstar Danesmoor HE 50/70-OOO-GB
  • Check the appliance FD number is after FD882
  • Verify part number 87186806390 against the manufacturer's parts list
  • Check whether seals or gaskets are needed separately

Not sure which part?

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