Alpha
Alpha Burner Injector 1.024872
Burner injector with a 4.2 mm bore for Alpha CD20S and CD28S LPG boilers, metering gas into the burner assembly.
At a glance
- Also known as 1259394
£29.87
£24.89 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 Alpha burner injector 1.024872 is a 4.2 mm injector fitted to the burner assembly of Alpha CD20S and CD28S LPG boilers. It meters gas into the burner, and its bore size sets the gas flow rate delivered for combustion.
Signs this part needs replacing
- Yellow or lazy flame instead of a crisp blue flame
- Sooting or blackening around the burner or heat exchanger
- Boiler failing to ignite or locking out repeatedly
- Incorrect gas rate measured at the burner
- Unstable flame that lifts or extinguishes
Before you order
- Confirm your boiler model and GC number against the fitment list above.
- Check the existing injector is marked 4.2 mm.
- Confirm whether your appliance is the LPG variant, as the CD28S fitment is listed for LPG.
- If unsure, check the manufacturer's parts list for your appliance.
Compliance
| Alternative numbers | 1259394 |
|---|
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| ALPHA ALPHA CD20S | — | — | — | |
| ALPHA CD20S | 41-532-18 | 41-532-18 | — | — |
| ALPHA CD28S (LPG) | 41-532-21 | 41-532-21 | — | — |
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.