Genuine Brivis replacement flue fan outlet joiner, 65mm HE reduced, part number B021341 (new Rinnai number 80021341). It connects the combustion (flue) fan outlet to the 65mm flue pipe on high-efficiency Brivis gas ducted heaters.
Why Replace It
The original joiner sits right on the hot flue fan outlet. Over time heat can harden or crack it, which lets flue gases and condensate escape inside the heater cabinet. That can lead to rust, water damage and poor venting. Fitting a new joiner restores a tight seal between the fan and the flue.
Suits
- High-efficiency (HE) Brivis gas ducted heaters with a 65mm flue
- Brivis StarPro HX, StarPro Max HX/MX and SP6 internal installations
Check before ordering: measure your flue pipe. This joiner is for the reduced 65mm HE flue. For standard 100mm flues, choose the 100mm joiner (PN 80065087).
Specifications
| Brand | Brivis (Rinnai) |
| Part number | B021341 (80021341) |
| Flue size | 65mm (HE reduced) |
| Fits | Combustion / flue fan outlet to flue pipe |
Installation
This is a gas appliance flue part. It must be installed by a licensed gasfitter, and the heater should be checked for correct venting after fitting.













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