Sime
Sime Main Heat Exchanger Complete 5188316
The Sime 5188316 is a complete main heat exchanger for Sime Format and Murelle gas boilers, replacing code 6278904.
At a glance
- Part type: Complete main heat exchanger
- Also known as 2043108
£751.88
£626.57 ex. VAT · VAT at 20%
Same-day dispatch
Ordered by 4pm Mon–Fri, 10:30am Sat.
30-day returns
Unused, in original packaging.
What it is
The Sime 5188316 is a complete main heat exchanger for Sime gas boilers. It transfers heat from the burner's combustion gases to the heating and domestic hot water circuits. This assembly replaces Sime code 6278904.
Signs this part needs replacing
- Water leaking from the heat exchanger body or connections
- Reduced heating or hot water output
- Kettling or banging noises from the boiler
- Boiler overheating or locking out
- Visible corrosion, scale or debris on the heat exchanger
Before you order
- Confirm your boiler model matches one of the listed fits.
- Check the part number 5188316 against your existing component.
- Ensure the system is drained and isolated before fitting.
- Verify that the replacement is the complete assembly, as shown.
Compliance
| Alternative numbers | 2043108 |
|---|
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| SIME FORMAT DEWY ZIP 25 BF MET - 8101200 | — | — | — | |
| SIME FORMAT SYSTEM 25 HE - 8101250 | 41-719-17 | 41-719-17 | — | — |
| SIME MURELLE EV HE 25-55 - 8102750 | — | — | — | |
| SIME MURELLE EV HE 25/55 MET - 8102740 | — | — | — | |
| SIME MURELLE HE 25/55 BF - 8102720 | — | — | — | |
| SIME SIME FORMAT SYSTEM 25 HE | — | — | — |
Documents & drawings
Everything we hold for this part. Where a document exists but we don't hold it, the technical team will source it from the manufacturer — usually the same working day.
No technical questions yet for this part.
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