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Potterton Hinge Unit 5139856

Potterton

Potterton Hinge Unit 5139856

Replacement hinge unit for the combustion chamber door on Potterton Commercial NXR4i boilers.

Manufacturer part no.
5139856
Showing prices

£170.40

£142.00 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 Potterton 5139856 Hinge Unit is a replacement hinge for the combustion chamber door on Potterton Commercial boilers. It is used on NXR4i models from 8 to 14 sections and carries the door so that it opens and closes squarely against the boiler face. The hinge is a serviceable part of the combustion chamber access assembly.

Signs this part needs replacing

  • The combustion chamber door is stiff, drops, or will not swing freely on its hinge.
  • The door no longer sits evenly against the boiler face when closed.
  • Visible corrosion, cracking or distortion at the hinge bracket or pin.
  • Play or wobble at the hinge when the door is moved by hand.

Before you order

  • Confirm the boiler model and section count from the appliance data badge; this hinge is listed for NXR4i 8 to 14 section models.
  • Compare the removed hinge with the replacement before fitting to confirm the mounting points match.
  • Inspect the combustion chamber door and its fixings for damage that may also need attention.
  • Isolate the boiler and allow it to cool before removing the door.

Not sure which part?

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