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Worcester Bosch Flue Balancing Ring 87161005770

Worcester Bosch

Worcester Bosch Flue Balancing Ring 87161005770

77 mm flue balancing ring for Worcester Bosch 28 CDI and Highflow 400 series boilers.

At a glance

  • Also known as 1013421
Manufacturer part no.
87161005770
GC number
E83-421
Showing prices

£5.04

£4.20 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 flue balancing ring, part number 87161005770, is a 77 mm diameter flue component used to balance flue gas flow on compatible Worcester Bosch appliances. It is fitted within the flue path so that combustion can be set and checked correctly during commissioning and servicing. It is used on 28 CDI and Highflow 400 series boilers.

Signs this part needs replacing

  • Combustion readings fall outside the range specified for the appliance
  • Flue flow cannot be balanced during commissioning or servicing
  • Visible distortion, corrosion or damage to the ring
  • Ring missing or not seated correctly in the flue assembly

Before you order

  • Confirm the existing ring measures 77 mm in diameter
  • Check your boiler model against the fit list above
  • Check the part number on the existing component or in the manufacturer's parts list

Not sure which part?

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