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Potterton Exchanger Gasket 5142351

Potterton

Potterton Exchanger Gasket 5142351

Heat exchanger gasket for Potterton Commercial Sirius 2 and Sirius 3 boiler models.

Manufacturer part no.
5142351
Showing prices

£19.92

£16.60 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 GASKET - EXCHANGER is a sealing gasket for the heat exchanger assembly on Potterton Commercial boilers. It is manufactured under the Potterton brand and supplied as a boiler spare for the Sirius 2 and Sirius 3 ranges. Its function is to seal the mating faces of the heat exchanger, preventing water and flue gas leakage at the joint.

Signs this part needs replacing

  • Water weeping or staining around the heat exchanger joint
  • Crusty scale or corrosion deposits at the gasket face
  • Visible hardening, flattening or splitting of the gasket material
  • Flue gas or combustion odour escaping from the exchanger joint
  • Gasket disturbed or damaged during heat exchanger work

Before you order

  • Confirm the boiler model and variant against the fit list above
  • Check the part number 5142351 matches the number on the existing gasket or parts listing
  • Inspect the mating faces for pitting or scale before fitting a new gasket
  • Verify whether the exchanger joint also uses additional seals or fixings

Not sure which part?

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