
Vaillant
Vaillant Pilot Burner Complete 042186
Vaillant 042186 pilot burner complete for MAG 9/1 OZ and MAG 9/1 XZ boilers, supplying the ignition flame to the main burner.
At a glance
- Appliance family: Vaillant MAG 9/1
- Also known as 042197, 1372412
£55.00
£45.83 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 Vaillant 042186 is a complete pilot burner assembly for Vaillant MAG 9/1 series boilers. It provides the standing pilot flame that lights the main burner on demand. The assembly is supplied as a complete unit, as described by the manufacturer's part listing.
Signs this part needs replacing
- The pilot flame will not light, or lights only intermittently
- The pilot flame goes out shortly after being established
- The pilot flame is weak, yellow, or visibly distorted rather than a steady blue
- Soot or carbon deposits build up around the pilot burner head
- The boiler repeatedly locks out because the pilot fails to prove
Before you order
- Confirm the appliance model and serial number against the manufacturer's parts list
- Check that the existing pilot burner matches the 042186 assembly before removal
- Verify the fault lies with the pilot burner rather than the ignition, thermocouple, or gas supply
- Work on gas-carrying components must be carried out by a competent, registered engineer
Compliance
| Alternative numbers | 042197, 1372412 |
|---|
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| VAILLANT MAG 9/1 OZ (1999-2004) | — | — | — | |
| VAILLANT MAG 9/1 XZ (1999-2004) | — | — | — | |
| VAILLANT VAILLANT MAG 9/1 OZ | — | — | — | |
| VAILLANT VAILLANT MAG 9/1 XZ | — | — | — |
Documents & drawings
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