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Worcester Bosch Gas Conversion Kit GR8300iW 30 R NG 8737709375

Worcester Bosch

Worcester Bosch Gas Conversion Kit GR8300iW 30 R NG 8737709375

Worcester Bosch 8737709375 NG gas conversion kit for Greenstar GR8300iW 30 R regular models; GC 41-406-98.

At a glance

  • Part type: Gas conversion kit
  • Also known as 8905058
  • This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.
Manufacturer part no.
8737709375
Showing prices

£65.48

£54.57 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 8737709375 is a gas conversion kit for the Greenstar GR8300iW 30 R range of regular gas appliances. It is the natural gas (NG) variant, catalogued by Worcester Bosch under the conversion kits part type, and it also carries the alternative number 8905058. The kit supplies the components needed to set the appliance up for the fuel it is being commissioned on, so the burner and gas valve arrangement match the supply.

Signs this part needs replacing

  • The appliance is being commissioned on a gas family that the currently fitted kit does not cover.
  • Combustion readings sit outside the range expected for the fuel being used.
  • The burner is slow to light, fails to light, or lights erratically after a change of supply.
  • The data badge or commissioning record no longer matches the gas family the appliance is running on.
  • A conversion has been started but the correct kit for the appliance variant is not present.

Before you order

  • Check the GC number and the appliance serial plate to confirm the exact model and the fuel type required.
  • Confirm the alternative number 8905058 against the kit already fitted to the appliance.
  • Check whether a gasket or seal kit is needed at the same time as the conversion.
  • 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.