Vaillant
Vaillant Pipe 0020039785
Vaillant pipe assembly 0020039785 for ecoTEC PLUS and VUI gas boilers.
At a glance
- Also known as 1381456
Showing prices
£52.46
£43.72 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 Vaillant 0020039785 is a pipe assembly for Vaillant gas boilers. It is listed for the ecoTEC PLUS and VUI appliance families. The pipe is a component within the boiler's pipework.
Signs this part needs replacing
- Visible leaks or weeping at the pipe or its joints
- Corrosion, rust or surface pitting on the pipe
- Cracks, splits or deformation in the pipe wall
- Loss of system pressure with no other obvious cause
- Water staining or residue around the pipe route
Before you order
- Confirm your appliance model and GC number against the fits list
- Check the part number on the existing pipe matches 0020039785
- Verify the pipe's connections and routing match your boiler
- Ensure the boiler is isolated and depressurised before removal
Mechanical
| Part type | HOSES & PIPES |
|---|
Compliance
| Manufacturer part number (MPN) | 0020039785 |
|---|---|
| Barcode / EAN | 4024074521915 |
| Alternative numbers | 1381456 |
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| VAILLANT VAILLANT ECOTEC PLUS 937 VUI 376/3-5 | — | — | — | |
| VAILLANT VAILLANT ECOTEC PLUS 937 VUI 376/5-5 | — | — | — | |
| VAILLANT VAILLANT ECOTEC PLUS 937 VUI 376/5-5 R1 | — | — | — | |
| VAILLANT VAILLANT ECOTEC PLUS 937 VUI 376/5-5 R2 | — | — | — | |
| VAILLANT VUI 286/5-5 R6 | 47-044-61 | 47-044-61 | — | — |
| VAILLANT VUI 376/3-5 | 47-044-39 | 47-044-39 | — | — |
| VAILLANT VUI 376/5-5 | 47-044-43 | 47-044-43 | — | — |
| VAILLANT VUI 376/5-5 R4 | 47-044-43 | 47-044-43 | — | — |
| VAILLANT VUI 386/5-5 A R4 | — | — | — | |
| VAILLANT ecoTEC 937 VUI 376/3-5 (2006-2012) | 47-044-39 | 47-044-39 | — | — |
Showing 10 of 19 compatible appliances.
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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Search by part number, product name or brand — our technical team confirms fitment before anything is dispatched.