BS5412 CD XZ 24 Cartridge

[tonypinkface]

I need to replace a kitchen tap cartridge.

The code stamped on existing cartridge is BS5412 CD XZ 24.
I've tried this code with Screwfix, B&Q and Tap Magician - they've all provided a cartridge that fits the tap, but is actually not compatible with the handle/shroud itself!!

The splines I am receiving are 8mm in diameter, which is too small.
Existing cartridge looks like 10mm dia spline - I'm unable to find anything to match this, even online.

Help!

 

[ShaunCorbs]

best option is to phone bristan up give the model no of the tap and they should have stock to send out