Navien
Navien Flexible Hose 20058211B
Flexible hose for Navien NCB500 combi boilers, manufacturer part 20058211B.
At a glance
- Appliance family: NCB500 combi
£28.79
£23.99 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 Navien flexible hose is a boiler component supplied under part number 20058211B. It is used on Navien NCB500 combi boilers, where it forms part of the internal pipework connection. The hose allows for movement and alignment between fixed connections within the appliance.
Signs this part needs replacing
- Visible weeping or dripping at either end of the hose
- Damp staining or corrosion around the hose connections
- The hose has hardened, cracked or perished with age
- A kink or flattening in the hose restricting flow
- Loss of system pressure with no other obvious cause
Before you order
- Confirm your boiler model against the fitment list above
- Check the appliance serial number, as fitment is listed by serial number range
- Inspect the existing hose and its connections to confirm the part required
- Compare the part number on the existing component with 20058211B
No specification data held for this part.
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| NAVIEN NCB500-1S+/32K COMBI - (Serial Number 3924) | — | — | — | |
| NAVIEN NCB500-1S+/32K COMBI - (Serial Number 3924) | — | — | — | |
| NAVIEN NCB500-2S+/41K COMBI - (Serial Number 3712) | — | — | — | |
| NAVIEN NCB500-2S+/41K COMBI - (Serial Number 3712) | — | — | — | |
| NAVIEN NCB500-2S/37K COMBI - (Serial Number 3735) | — | — | — | |
| NAVIEN NCB500-2S/37K COMBI - (Serial Number 3735) | — | — | — |
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.
Not sure which part?
Tell the parts assistant what it's going into — the appliance make and model, or the GC number off the data badge — and it will check this part is on the fit list.