Biasi
Biasi Air-Gas Gasket BI1663102
Air-gas gasket for Biasi Basica COND and Rinnova Adaptive condensing boilers.
At a glance
- Part type: air-gas gasket
- Also known as 1651808
Showing prices
£17.86
£14.88 ex. VAT · VAT at 20%
Available to order · 7 working days
Available to order · 7 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 Biasi BI1663102 is an air-gas gasket used on Biasi condensing boiler assemblies. It seals the joint between the air and gas paths, preventing leakage at the mating face. It is fitted across the Basica COND and Rinnova Adaptive ranges.
Signs this part needs replacing
- Visible cracking, hardening or flattening of the gasket material
- Soot staining or discolouration around the gasket face
- Combustion readings drifting outside the expected range
- Whistling or unusual noise from the air-gas joint
- Signs of leakage at the mating face during a service check
Before you order
- Confirm your boiler model against the fit list above
- Check the existing gasket and joint face for damage before refitting
- Verify the part number BI1663102 matches the one removed
- Replace the gasket whenever the joint is disturbed
Compliance
| Alternative numbers | 1651808 |
|---|
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| BIASI BASICA COND M275V.2024 SM | 47-583-49 | 47-583-49 | — | — |
| BIASI BASICA COND M275V.2428 SM | 47-583-50 | 47-583-50 | — | — |
| BIASI BASICA COND M275V.28 SR | 41-583-40 | 41-583-40 | — | — |
| BIASI BASICA COND M275V.2832 SM | 47-583-51 | 47-583-51 | — | — |
| BIASI RINNOVA ADAPTIVE M300V.2025 SM | 47-583-46 | 47-583-46 | — | — |
| BIASI RINNOVA ADAPTIVE M300V.2530 SM | 47-583-47 | 47-583-47 | — | — |
| BIASI RINNOVA ADAPTIVE M300V.30 SR | 41-583-39 | 41-583-39 | — | — |
| BIASI RINNOVA ADAPTIVE M300V.3035 SM | 47-583-48 | 47-583-48 | — | — |
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
BIASI appliance manual — BASICA COND M275V.2024 SM (GC 47-583-49), BASICA COND M275V.2428 SM (GC 47-583-50), BASICA COND M275V.2832 SM (GC 47-583-51)
manualmanualBIASI appliance manual — RINNOVA ADAPTIVE M300V.2025 SM (GC 47-583-46), RINNOVA ADAPTIVE M300V.2530 SM (GC 47-583-47), RINNOVA ADAPTIVE M300V.3035 SM (GC 47-583-48)
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.