Need radiator hose size (in mm) for an inline temp sending unit

[tbaxman]

I have been searching to try and find the upper radiator hose size for a 1983 Porsche 944, I am sure someone knows this off the top of their head, could you please throw me a bone here?

Also, I am considering putting in an in-line radiator hose temperature sending unit for an aftermarket temp gauge as my stock gauge reads quite erradic (hence the need for the hose size for the correct size housing). Anyone have any feedback on brands/accurate units to install?

Thank you all.

[Techno Duck]

Get a 35mm adapter for the upper radiator hose.

I like the VDO Vision series.. accurate and looks stock.

[tbaxman]

Thanks, Techno, I appreciate the response.

Good day, all