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Sime Complete Flange Main Heat Exchanger 6278850

Sime

Sime Complete Flange Main Heat Exchanger 6278850

Complete flange for the main heat exchanger on Sime Dewy and Planet Dewy gas boilers, part number 6278850.

At a glance

  • Also known as 2041728
Manufacturer part no.
6278850
Showing prices

£83.11

£69.26 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 Sime 6278850 is a complete flange for the main heat exchanger, used on Sime Dewy and Planet Dewy gas boiler ranges. It forms the connection between the heat exchanger body and the associated pipework, sealing the joint and retaining the water circuit. The flange is supplied as a complete assembly for the main exchanger.

Signs this part needs replacing

  • Water weeping or dripping from the flange joint at the main heat exchanger
  • Visible corrosion, pitting or scaling on the flange face
  • Perished or flattened sealing face causing a persistent leak
  • Staining or mineral deposits around the exchanger connection
  • Repeated pressure loss on the heating circuit traced to the flange joint

Before you order

  • Confirm the appliance model and product code against the fit list above
  • Check the flange and its sealing face for damage before removal to confirm the fault
  • Verify the part number 6278850 matches the component currently fitted
  • Isolate and drain the appliance before dismantling the heat exchanger connection

Not sure which part?

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