I was recently gifted (quite generously) a Takom Porsche Turret King Tiger without zimmerit.
What I would like to know is if there are any zimmeret sets for it? I tried the Google thing and wasn't successful.

I think this is a preproduction version that didn’t have it applied.
Dan

Go old school and do your own, I've done it with milliput, but even easier is with 'no more nails' glue and a hacksaw blade.

https://www.britmodeller.com/forums/index.php?/topic/235011218-video-how-to-apply-zimmerit/

I only found the following PE Zimmerit set, from Eduard, specifically for the Takom kit.

https://www.eduard.com/armoured-fighting-vehicles/1-35/king-tiger-initial-zimmerit-1-35.html?cur=2

ATAK has a set for the Tamiya and MENG kits. It's more than likely one of these would fit the Takom kit.

https://atakmodel.istore.pl/en/35002-zimmerit-king-tiger-production-turret.html
https://atakmodel.istore.pl/en_US/p/35068-ZIMMERIT-KING-TIGER-Porsche-Turret-MENG/22730632

If you have the option, always get the ATAK set if you can.

Todays kits are becoming more accurate. Which means they are becomming more alike in size and shape. I would bet Takom and Meng are going to be close enough to be a match for the Atak zimm.