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Worcester Bosch Duct Gas-Air Mixture 87186496680

Worcester Bosch

Worcester Bosch Duct Gas-Air Mixture 87186496680

Gas-air mixture duct for Worcester Bosch Greenstar 2000 and 4000 combi and system boilers.

At a glance

  • Also known as 1038293
  • Gas-carrying components must be fitted and commissioned by a Gas Safe registered engineer
Manufacturer part no.
87186496680
Showing prices

£160.87

£134.06 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

The Worcester Bosch Duct Gas-Air Mixture is a boiler component that carries and mixes the gas and air supply through to the combustion chamber. It is manufactured by Worcester Bosch for the Greenstar 2000 and Greenstar 4000 appliance families. The part number for this duct is 87186496680.

Signs this part needs replacing

  • Combustion readings outside the expected range that cannot be corrected by adjustment or servicing
  • Visible cracking, distortion or deterioration of the duct body
  • Soot deposits or staining around the inlet ducting or burner area
  • Unstable or noisy combustion traced to air and gas supply faults
  • The duct is damaged or does not seat correctly when refitted after service work

Before you order

  • Confirm the boiler model and GC number against the fit list
  • Check whether the appliance is the NG or LPG variant, as both appear in the listings
  • Verify the existing duct part number matches 87186496680 before removal
  • Gas-carrying components must be fitted and commissioned 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.