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Worcester Bosch Heat Exchanger Seal 15mm 87161064350

Worcester Bosch

Worcester Bosch Heat Exchanger Seal 15mm 87161064350

15mm DHW heat exchanger seal for Worcester Bosch Greenstar, Greenstar 8000 Life/Style and ErP combi boilers, part 87161064350.

At a glance

  • Part type: Gasket, seal and O-ring - DHW heat exchanger seal
  • Also known as 1014907, N7284
  • This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.
Manufacturer part no.
87161064350
GC number
H08-797
Showing prices

£5.04

£4.20 ex. VAT · VAT at 20%

In stock
Cut-off passed — dispatches next working day
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Same-day dispatch

Ordered by 4pm Mon–Fri, 10:30am Sat.

30-day returns

Unused, in original packaging.

What it is

The Worcester Bosch 87161064350 is a 15mm seal for the domestic hot water heat exchanger on Worcester Bosch gas boilers. It sits at the heat exchanger joint and forms a watertight barrier, stopping water escaping as it passes through the unit during hot water draw-off. It is a single-piece service part intended for replacement when the original seal has hardened, flattened or started to weep.

Signs this part needs replacing

  • Water weeping or a visible drip at the heat exchanger joint, often showing as a crusty white or rusty stain
  • Limescale or corrosion residue building up around the seal face
  • The seal feels hard, brittle or flattened once the joint is opened
  • System pressure dropping and needing regular top-ups with no other obvious cause
  • Damp patches inside the casing below the heat exchanger after hot water use

Before you order

  • Check the GC number and model of your appliance against the compatibility list, as this seal is listed against a wide range of GC numbers across the Greenstar, Greenstar 8000 Life, Greenstar 8000 Style and ErP families
  • Confirm the part number on the existing seal or the appliance documentation matches 87161064350 before ordering
  • If the heat exchanger joint is being opened, check the condition of the other seals and O-rings in the assembly at the same time
  • 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.