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Potterton Plate For Combustion Door With Opening D175 5139844

Potterton

Potterton Plate For Combustion Door With Opening D175 5139844

Potterton combustion door plate with a D175 opening, part 5139844, for Potterton Commercial NXR4I boilers.

Manufacturer part no.
5139844
Showing prices

£374.03

£311.69 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

This is the Potterton plate for the combustion door with a D175 opening, manufacturer part number 5139844. It forms the front plate on the combustion door of Potterton Commercial NXR4I series boilers, closing off the combustion chamber at the access point. It is supplied for commercial boiler servicing and repair work.

Signs this part needs replacing

  • Visible corrosion or pitting across the plate surface or around the D175 opening
  • Distortion or warping of the plate so it no longer seats flat against the combustion door
  • Cracking or burn-through at the opening edge
  • Soot staining or heat damage around the door area suggesting a poor seal
  • Difficulty achieving a clean, gas-tight closure when the combustion door is refitted

Before you order

  • Confirm the boiler model and section count against the fit list before ordering
  • Check the existing plate is marked with the D175 opening designation
  • Verify the manufacturer part number 5139844 matches the part being replaced
  • Assess the combustion door and its seal at the same time, as work here is on a commercial appliance

Not sure which part?

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