Navien
Navien Flexible Hose 20058210B
Flexible EPDM hose for Navien NCB300 combi boilers, part number 20058210B.
At a glance
- Also known as FLEXIBLE-HOSENCB300EPDMSTS, 20058210A
Showing prices
£23.03
£19.19 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 Navien flexible hose (part number 20058210B) is a flexible hose for Navien NCB300 series combi boilers. It is manufactured from EPDM and STS materials. This part is used within the NCB300 combi boiler assembly.
Signs this part needs replacing
- Visible cracking, perishing or hardening of the hose material
- Leaks or weeping at the hose connections
- Kinks or deformation that restrict flow
- Loss of system pressure
- Water staining or dampness around the hose
Before you order
- Confirm your boiler model and serial number against the fit list
- Check the part number 20058210B matches the existing hose
- Inspect the hose connections for damage or wear
- Verify that no other components in the assembly require replacement
Compliance
| Alternative numbers | FLEXIBLE-HOSENCB300EPDMSTS, 20058210A |
|---|
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| NAVIEN NCB300-28K COMBI - (Serial Number 3710) | — | — | — | |
| NAVIEN NCB300-28K COMBI - (Serial Number 3710) | — | — | — | |
| NAVIEN NCB300-37K COMBI - (Serial Number 3734) | — | — | — | |
| NAVIEN NCB300-37K COMBI - (Serial Number 3734) | — | — | — | |
| NAVIEN NCB300-41K COMBI - (Serial Number 3711) | — | — | — | |
| NAVIEN NCB300-41K COMBI - (Serial Number 3711) | — | — | — |
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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