@roger44 Welcome to the Creality Forum…!!!
It’s been a couple months. 
I can’t remember exactly when I ordered it through their “Power Boost Kit +” event. I must say though it is working very well.
To be honest I installed this on my K1 Max as it’s the same as a K1. (Sold the K1)
I bought a replacement extruder on Ebay which I wrote about HERE