Vaillant
Vaillant O-Ring 0020166935
Vaillant O-ring pack of 10, part number 0020166935, for use with the aroTHERM VWZ MWT 150.
At a glance
- Also known as 1386148
Showing prices
£9.67
£8.06 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 O-ring (part number 0020166935) is a sealing component supplied in a pack of 10. It is used on the Vaillant aroTHERM VWZ MWT 150 to seal a joint against water escape.
Signs this part needs replacing
- Water weeping or dripping from the joint the O-ring seals
- Visible limescale or mineral staining around the connection
- The O-ring looks flattened, cracked or hardened
- A leak returns shortly after the joint has been tightened
Before you order
- Check the appliance data badge to confirm the model is the aroTHERM VWZ MWT 150
- Confirm how many O-rings the repair requires; this part is supplied as a pack of 10
- Inspect the sealing face for damage before fitting a new O-ring
Compliance
| Alternative numbers | 1386148 |
|---|
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| VAILLANT VWZ MWT 150 | — | — | — | |
| VAILLANT aroTHERM VWZ MWT 150 | — | — | — | |
| VAILLANT aroTHERM VWZ MWT 150 (2013-2021) | — | — | — |
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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