Navien
Navien Gas Nozzle 20031096A
Gas nozzle 5.9x1.0T for Navien NCB-CE system and combination boilers.
At a glance
- Gas-carrying components should be fitted and commissioned by a competent Gas Safe registered engineer
£3.91
£3.26 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 gas nozzle 5.9x1.0T is a gas train component used on Navien NCB-CE boilers. It meters and directs the gas flow into the burner assembly, so its bore size and condition directly affect combustion quality. The nozzle is marked 5.9x1.0T and carries the part number 20031096A.
Signs this part needs replacing
- Combustion analysis readings drifting outside the expected range for the appliance
- Unstable or lifting flame at the burner, or visible change in flame pattern
- Sooting or discolouration around the burner or heat exchanger
- Repeated ignition faults or lockouts that trace back to the gas train
- Physical damage, blockage or corrosion at the nozzle orifice
Before you order
- Confirm the appliance model and serial number against the manufacturer's parts list
- Check the existing nozzle marking reads 5.9x1.0T before ordering
- Confirm how many nozzles are fitted to your appliance so the correct quantity is ordered
- Gas-carrying components should be fitted and commissioned by a competent Gas Safe registered engineer
No specification data held for this part.
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| NAVIEN NCB-CE 28KW SYSTEM BOILER ERP - (Serial Number 6664) | — | — | — | |
| NAVIEN NCB-CE 28KW SYSTEM BOILER ERP - (Serial Number 6664) | — | — | — | |
| NAVIEN NCB-CE 34KW COMBINATION BOILER ERP - (Serial Number 0130) | — | — | — | |
| NAVIEN NCB-CE 34KW COMBINATION BOILER ERP - (Serial Number 0130) | — | — | — | |
| NAVIEN NCB-CE 34KW COMBINATION BOILER ERP - (Serial Number 2572) | — | — | — | |
| NAVIEN NCB-CE 34KW COMBINATION BOILER ERP - (Serial Number 2572) | — | — | — |
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?
Search by part number, product name or brand — our technical team confirms fitment before anything is dispatched.