4x4 front knuckle replacement

[Zer0power]

The front left knuckle on my scrambler 500 broke off when I went mudding ?‍♂️ hey things break

 

Anyway it came completely off and I was thinking I just need the whole inside half of the CV but I found this part online and was wondering if it’s all I need...?

 

https://www.denniskirk.com/moose/u-joint-1205-0010.p382874.prd/382874.sku

 

Is this all I need or do I need the whole half of the axle? There seems to be no damage to the axle except a little scratching on the inside.