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Worcester Bosch Insulation Combustion Chamber Rear 87161028790

Worcester Bosch

Worcester Bosch Insulation Combustion Chamber Rear 87161028790

Rear combustion chamber insulation panel for Worcester Bosch 35 CDI II RSF LPG and NG boilers.

At a glance

  • Part type: rear combustion chamber insulation
  • Appliance family: Worcester 35 CDI II RSF
  • Also known as 1013989
Manufacturer part no.
87161028790
GC number
E80-438
Showing prices

£17.04

£14.20 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 87161028790 is a rear combustion chamber insulation panel for the Worcester 35 CDI II RSF boiler range. It sits at the rear of the combustion chamber, where it limits heat transfer to the casing and surrounding components. The panel is listed for both the LPG and natural gas versions of the 35 CDI II RSF.

Signs this part needs replacing

  • Visible cracks, crumbling or disintegration of the insulation material
  • Panel detached or sitting loose at the rear of the combustion chamber
  • Heat discolouration or scorching on adjacent panels or casing
  • Insulation debris collecting in the combustion chamber
  • Combustion readings drifting outside the expected range

Before you order

  • Confirm the boiler model and GC number against the fit list above.
  • Check that the rear panel is the damaged one — front and side insulation panels are separate parts.
  • Inspect the other combustion chamber insulation panels at the same time, as they may also need replacing.
  • Verify part number 87161028790 against the manufacturer's parts list for your appliance.

Not sure which part?

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