Sime
Sime Expansion Tank 5139121
Sime expansion tank, part number 5139121, for use in gas boiler systems.
At a glance
- Also known as 2042778
£97.92
£81.60 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 5139121 is an expansion tank manufactured by Sime for use in gas boiler systems. It sits in the Expansion Vessels category of gas boiler spares.
Before you order
- Confirm the part number 5139121 matches the number on the existing vessel or in the boiler documentation.
- Check that the vessel is being fitted to a Sime gas boiler installation.
- Isolate and depressurise the heating system before removal or fitting, and check that the connection and mounting arrangement suit the existing unit.
Compliance
| Alternative numbers | 2042778 |
|---|
No fitment data held for this part.
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 documents held for this part. The technical team will source them from the manufacturer — usually the same working day.
No technical questions yet for this part.
Not sure which part?
Search by part number, product name or brand — our technical team confirms fitment before anything is dispatched.