Alpha
Alpha burner injector LPG 0.74mm 6.5204321
Genuine Alpha burner injector, 0.74mm, for LPG, part number 6.5204321.
At a glance
- Also known as BURNER-INJECTOR-LPG-074MM, 1250886
- This is gas work and must be carried out by a Gas Safe registered engineer
Showing prices
£6.52
£5.43 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
This is the main burner gas injector fitted to affected Alpha boilers, sized at 0.74mm for LPG (propane), which meters the correct volume of gas into the burner. It is a genuine Alpha part, number 6.5204321.
Signs this part needs replacing
- Uneven, yellow or lifting flame instead of a steady blue flame
- Sooting or blockage visible on inspection
- Poor combustion readings during a service or flue gas analysis
- Reduced heat output despite the burner firing
Before you order
- Match this part number and size against the injector fitted to your boiler, and confirm it is the correct gas type (LPG, not natural gas)
- Isolate the gas supply before removing the injector
- This is gas work and must be carried out by a Gas Safe registered engineer
Mechanical
| Part type | INJECTORS |
|---|
Compliance
| Manufacturer part number (MPN) | 6.5204321 |
|---|---|
| Alternative numbers | BURNER-INJECTOR-LPG-074MM, 65204321, 1250886 |
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| ALPHA 280E (LPG) | — | — | — | |
| ALPHA ALPHA 280E | — | — | — | |
| ALPHA ALPHA 280P | — | — | — |
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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