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Potterton Complete Combustion Chamber Door 5139839

Potterton

Potterton Complete Combustion Chamber Door 5139839

Complete combustion chamber door without opening, for Potterton Commercial NXR4I boilers.

At a glance

  • Appliance family: Potterton Commercial NXR4I
Manufacturer part no.
5139839
Showing prices

£669.60

£558.00 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 complete combustion chamber door, no opening, is a Potterton Commercial spare supplied under part number 5139839. It forms the sealed closure over the combustion chamber on Potterton Commercial NXR4I series boilers. The door is supplied as a complete assembly without an opening, retaining the chamber's integrity during operation.

Signs this part needs replacing

  • Visible corrosion, cracking or distortion of the door or its fixings
  • Combustion readings outside the expected range, pointing to a leaking chamber seal
  • Soot staining or heat marking around the door edge or its gasket face
  • Door no longer seats or seals correctly against the combustion chamber

Before you order

  • Confirm the boiler model and section count against the fitment list
  • Check the existing door for an opening, as this version is supplied without one
  • Inspect the door fixings, seal and gasket face for condition before reassembly
  • Verify the part number 5139839 against the existing component where legible

Not sure which part?

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