Cooler for i7 8700k

Solution
http://www.coolermaster.com/cooling/cpu-liquid-cooler/masterliquid-pro-240/
shows it fits 1151 socket (https://ark.intel.com/products/126684/Intel-Core-i7-8700K-Processor-12M-Cache-up-to-4_70-GHz) so yes it'll fit fine.
Another consideration is your case. You sure the CM240 will fit?

Sedivy

Estimable
http://www.coolermaster.com/cooling/cpu-liquid-cooler/masterliquid-pro-240/
shows it fits 1151 socket (https://ark.intel.com/products/126684/Intel-Core-i7-8700K-Processor-12M-Cache-up-to-4_70-GHz) so yes it'll fit fine.
Another consideration is your case. You sure the CM240 will fit?
 
Solution