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Ideal Heat Engine Kit Isar HE Icos 173554

Ideal

Ideal Heat Engine Kit Isar HE Icos 173554

Ideal 173554 heat engine kit, a heat exchanger assembly for Isar HE, Icos System HE and Esprit 2 boilers. GC number H07-661.

At a glance

  • Part type: Heat exchanger (heat engine kit)
  • Also known as 1179537, N5040
Manufacturer part no.
173554
GC number
H07-661
Showing prices

£866.26

£721.88 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 Ideal 173554 is a heat engine kit, supplied as a heat exchanger assembly for Ideal domestic gas boilers. It is used across the Isar HE, Icos System HE and Esprit 2 appliance families, where the primary heat exchanger transfers heat from the burner to the water in the system. The kit is intended for replacement of the original exchanger when it can no longer do its job.

Signs this part needs replacing

  • Heating or hot water output drops away, or the boiler struggles to reach temperature
  • Kettling, banging or gurgling noises coming from the heat exchanger
  • The appliance overheats and locks out repeatedly
  • Water weeping from the exchanger body or its joints
  • Scale, sludge or discolouration visible on the exchanger surface

Before you order

  • Check the GC number on the appliance data badge against the compatibility list below before ordering.
  • Confirm the exact model, as the same part number is listed against several Isar, Icos and Esprit variants.
  • Check the appliance parts list for any gasket or seal required to complete the swap.

Not sure which part?

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