Alpha Burner Injector 1.025585

3.5 mm main burner injector for the Alpha CD12S boiler, used with natural gas.

At a glance

Also known as MAIN-INJECTOR-35MM-CD12S-NG, 1259452
Gas appliance work must be carried out by a Gas Safe registered engineer

Manufacturer part no.

1.025585

Showing prices

£19.74

£16.45 ex. VAT · VAT at 20%

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 team Send 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 1.025585 is a 3.5 mm main burner injector manufactured by Alpha. It meters the gas flow into the burner on the Alpha CD12S boiler. This injector is intended for natural gas (NG) appliances.

Signs this part needs replacing

Weak, uneven or yellow flame at the burner
Sooting or black marks around the burner area
Boiler fails to ignite or locks out repeatedly
Unstable flame that lifts or flickers

Before you order

Confirm your boiler model is the Alpha CD12S and check the GC number (41-532-16)
Verify the appliance is set up for natural gas (NG)
Check the existing injector is marked 3.5 mm
Gas appliance work must be carried out by a Gas Safe registered engineer

Can't find yours? Call 01302 279234

Make	Model / assembly	Reference	Years	Fitment
ALPHA ALPHA CD12S	—		—	—
ALPHA CD12S	41-532-16	`41-532-16`	—	—

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.

Not sure which part?

Search by part number, product name or brand — our technical team confirms fitment before anything is dispatched.

Send a technical question Call the technical team