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Ideal Draught Diverter 8358-8507 172058

Ideal

Ideal Draught Diverter 8358-8507 172058

Ideal 172058 draught diverter assembly for Ideal Commercial Concord ES300/H and ESi 300 appliances, previously listed as 8358-8507.

At a glance

  • Part type: Flue assembly / draught diverter
  • Also known as DRAUGHT-DIVERTER-CPLT-8358-8507, 1178444
  • This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.
Manufacturer part no.
172058
Showing prices

£1,935.22

£1,612.68 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 172058 is a complete draught diverter assembly used on Ideal Commercial Concord appliances. It sits at the flue outlet of the boiler and stabilises the draught through the flue, allowing combustion products to be carried away while preventing down-draught from disturbing the burner. The assembly is supplied as a complete unit, matching the original fitment on the Concord ES300/H and ESi 300 ranges.

Signs this part needs replacing

  • Combustion products spilling or failing to clear at the flue outlet
  • Visible corrosion, distortion or cracking on the diverter body
  • Unstable or lifting flame at the burner, particularly in windy conditions
  • Repeated lockouts or flame failure linked to poor flue draught
  • Soot staining or heat damage around the flue connection

Before you order

  • Confirm the appliance model and serial number against the compatibility list, as the diverter is specific to the Concord ES300/H and ESi 300 variants.
  • Check the existing part against the previous number 8358-8507 before ordering, as earlier builds may carry that reference.
  • Inspect the flue sealing gasket or seal at the same time and replace it if it is compressed, perished or damaged.
  • This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.

Not sure which part?

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