Alpha
Alpha M5 Plastic Washer 1.6413
M5 plastic washer for Alpha CD series gas boilers, part number 1.6413.
At a glance
- Also known as 1257803
Showing prices
£0.32
£0.27 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
The Alpha 1.6413 is an M5 plastic washer for Alpha CD series gas boilers. It is a serviceable spare part for the models listed below.
Signs this part needs replacing
- Cracks, splits or visible damage to the plastic
- Hardening or brittleness of the washer material
- Water weeping or dripping from the joint
- Flattening or deformation that prevents a seal
- Scale or debris trapped around the washer seating
Before you order
- Confirm your boiler model and GC number against the list above
- Check that an M5 washer is the size required for your joint
- Inspect adjacent seals and fixings for wear while access is available
Compliance
| Alternative numbers | 1257803 |
|---|
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| ALPHA ALPHA CD24C | — | — | — | |
| ALPHA ALPHA CD24S | — | — | — | |
| ALPHA ALPHA CD32C | — | — | — | |
| ALPHA CD18S | 41-532-06 | 41-532-06 | — | — |
| ALPHA CD18S (LPG) | 41-532-13 | 41-532-13 | — | — |
| ALPHA CD24C | 47-532-19 | 47-532-19 | — | — |
| ALPHA CD24C (LPG) | 47-532-29 | 47-532-29 | — | — |
| ALPHA CD24S | 41-532-02 | 41-532-02 | — | — |
| ALPHA CD24S (LPG) | 41-532-15 | 41-532-15 | — | — |
| ALPHA CD30S | 41-532-08 | 41-532-08 | — | — |
Showing 10 of 13 compatible appliances.
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.
manual
ALPHA appliance manual — CD18S (GC 41-532-06), CD18S (LPG) (GC 41-532-13), CD30S (GC 41-532-08), CD30S (LPG) (GC 41-532-14)
manualmanualALPHA appliance manual — CD24C (GC 47-532-19), CD24C (LPG) (GC 47-532-29), CD24S (GC 41-532-02), CD24S (LPG) (GC 41-532-15), CD32C (GC 47-532-21), CD32C (LPG) (GC 47-532-30)
manualNo 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.