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Worcester Bosch Washer 87101031650

Worcester Bosch

Worcester Bosch Washer 87101031650

Worcester Bosch 87101031650 washer for Greenstar combi and condensing boilers, sealing joints in the appliance water circuit.

At a glance

  • Part type: Gasket, O-ring, seal and washer
  • Also known as 1012333
  • This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.
Manufacturer part no.
87101031650
GC number
E74-550
Showing prices

£2.75

£2.29 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 87101031650 is a washer supplied as part of the manufacturer's gasket, O-ring, seal and washer range. It sits between two mating faces inside the appliance and compresses under load to form a watertight barrier at the joint it serves. It is used across the Worcester Bosch Greenstar family of combi and condensing boilers, where it seals a connection within the water circuit and keeps the joint leak-free through normal heating and hot water operation.

Signs this part needs replacing

  • Water weeping or dripping from the joint the washer seals
  • Damp staining, corrosion or limescale trails around the connection
  • The washer has hardened, flattened or cracked with age
  • Repeated pressure loss traced back to a sealed joint
  • Slight seepage appearing after the appliance has been drained and refilled

Before you order

  • Check the GC number and the serial plate on the appliance to confirm this washer is listed for your model.
  • Cross-reference alternative number 1012333 when checking against older documentation.
  • This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.

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