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Sime Main Heat Exchanger Complete 5188317

Sime

Sime Main Heat Exchanger Complete 5188317

Complete main heat exchanger, part 5188317, for selected Sime gas boiler models.

At a glance

  • Part type: complete main heat exchanger
  • Also known as 2043110
Manufacturer part no.
5188317
Showing prices

£959.09

£799.24 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 Sime 5188317 is a complete main heat exchanger for Sime gas boilers. The heat exchanger transfers heat from the combustion gases to the system water, forming the primary heat transfer component of the appliance. This part is supplied as a complete assembly rather than as individual sections.

Signs this part needs replacing

  • Water leaking from the heat exchanger body or its joints
  • Reduced heating output or poor system heat-up with no other obvious cause
  • Overheating or repeated high-limit trips during normal operation
  • Visible corrosion, scaling or soot build-up on the exchanger surfaces
  • Combustion readings outside the manufacturer's specified range

Before you order

  • Confirm the appliance model and serial number against the fit list above.
  • Check the existing heat exchanger for the part number or identifying markings.
  • Inspect associated seals, gaskets and connections for condition before fitting.
  • Verify that the fault has been traced to the heat exchanger and not to another component.

Not sure which part?

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