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Worcester Bosch Throttle Bush (38) 87103030730

Worcester Bosch

Worcester Bosch Throttle Bush (38) 87103030730

Worcester Bosch throttle bush (38) for the Greenstar ZWBR 11-25 A31 LPG appliance.

At a glance

  • Appliance family: Worcester Greenstar
  • Also known as THROTTLE-BUSH-38, 2243831
Manufacturer part no.
87103030730
Showing prices

£33.13

£27.61 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 throttle bush (38) manufactured by Worcester Bosch, supplied under part number 87103030730. It is a small restrictor component used within the gas circuit of the appliance, where it regulates flow through the relevant passage. It is listed for the Worcester Greenstar ZWBR 11-25 A31 LPG model.

Signs this part needs replacing

  • The appliance fails to hold a stable flame or combustion readings drift from the commissioned values.
  • Gas rate at the appliance does not match the data badge figure for the model.
  • The bush is found damaged, distorted or missing during servicing of the gas circuit.
  • Reassembly shows the bush will not seat correctly or has been fitted in the wrong orientation.

Before you order

  • Confirm the appliance model and GC number on the data badge match the fitment listed here.
  • Check the existing bush for its size marking, as the number in the part description identifies the variant.
  • Verify the bush is the component being removed, as similarly shaped restrictors are used elsewhere in the gas train.
  • Have the appliance recommissioned and combustion checked after fitting, as this part affects gas flow.

Not sure which part?

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