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Worcester Bosch O-Ring 21.89mm x 2.62mm 10x 8737603089

Worcester Bosch

Worcester Bosch O-Ring 21.89mm x 2.62mm 10x 8737603089

Pack of 10 Worcester Bosch O-rings measuring 21.89mm by 2.62mm, for use in Greenstar 2000 Combi Gr2300IW appliances.

At a glance

  • Also known as 8905424
Manufacturer part no.
8737603089
Showing prices

£18.17

£15.14 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

This is a pack of 10 O-rings from Worcester Bosch, each measuring 21.89mm x 2.62mm. They are used as sealing components within Greenstar 2000 Combi Gr2300IW appliances, seating into machined grooves to seal fluid and gas paths at joints and connections.

Signs this part needs replacing

  • Water or gas weeping at a joint where the O-ring is seated
  • Visible flattening, hardening or cracking of the ring
  • Water staining or mineral deposits around the joint face
  • A joint that continues to leak after correct re-torquing
  • An O-ring that has been disturbed or stretched during previous servicing

Before you order

  • Confirm the existing O-ring dimensions match 21.89mm x 2.62mm
  • Check the appliance model and GC number against the fits list above
  • Confirm how many O-rings are required for the joint or service being carried out
  • Inspect the sealing groove for scoring or damage before fitting

Not sure which part?

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