Vaillant
Vaillant Adaptor 180921
Vaillant 180921 adaptor for Ecomax and Ecotec VU series gas boilers.
At a glance
- Also known as 1376614
Showing prices
£80.17
£66.81 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 Vaillant 180921 is an adaptor used in Vaillant Ecomax and Ecotec VU series gas boilers. It provides a connection interface for compatible components within these appliances.
Signs this part needs replacing
- Visible cracks or fractures in the adaptor body
- Leaks or weeping at the connection point
- Corrosion or rust on the adaptor surfaces
- Loose or unstable fit when connected
- Discolouration or heat damage
Before you order
- Confirm your boiler model matches one of the listed fits
- Check the part number 180921 on your existing component
- Inspect the connection area for any additional damaged parts
- Verify that no alternative adaptor is required for your specific boiler revision
Mechanical
| Part type | ADAPTORS & CONNECTORS |
|---|
Compliance
| Manufacturer part number (MPN) | 180921 |
|---|---|
| Barcode / EAN | 4024074479261 |
| Alternative numbers | 1376614 |
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| VAILLANT VU 656-7 | 41-044-59 | 41-044-59 | — | — |
| VAILLANT VU 656/4-5 | 41-044-59 | 41-044-59 | — | — |
| VAILLANT ecoMAX 665 VU 656-7 (2006-2006) | 41-044-59 | 41-044-59 | — | — |
| VAILLANT ecoTEC VU 656/4-5 (2007-2015) | 41-044-59 | 41-044-59 | — | — |
Fitment listings are a guide, not a guarantee. Plant-room assemblies get modified on site more often than not. Send us the GC number off the data badge and a photo of the existing valve and we will confirm before anything is dispatched.
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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