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Sime Burner Assembly 5140503

Sime

Sime Burner Assembly 5140503

Sime 5140503 burner assembly for listed Sime Murelle and Planet boilers. Check your appliance model against the fit list before ordering.

At a glance

  • Part type: burner assembly
  • Also known as 8921749
Manufacturer part no.
5140503
Showing prices

£90.96

£75.80 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 5140503 is a burner assembly for Sime heating appliances. It forms the combustion section of the boiler, where gas is mixed with air and ignited to produce the heat that feeds the heat exchanger. Confirm the part against your appliance model before fitting.

Signs this part needs replacing

  • Yellow, lifting or unstable flame instead of a clear blue flame
  • Boiler fails to ignite or repeatedly goes into lockout during start-up
  • Visible damage, cracking or corrosion to the burner head or surface
  • Uneven heating or a drop in output from the appliance
  • Excessive noise such as popping or roaring during burner operation

Before you order

  • Match your appliance model exactly against the fit list above, including the full model designation.
  • Check the existing burner for part number markings and compare them with 5140503 before ordering.
  • Confirm the appliance is a Sime product, as the part is listed for Sime models only.
  • Where the fault could come from the gas valve, ignition system or controls, rule these out before replacing the burner.

Not sure which part?

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