Thermostatic oil cooler adapter. 
The same thermostatic adapter used in B-Line Motorsprots oil cooler kits, can be used to build your own oil cooling system. Easily mounts between you engine block or OEM oil heat exchange and filter.
Constructed from 6061 aluminum material,  with a pair of 1/8" NPT ports intergrated for use with sensors or oil feed, and a high flowing thermostat that opens at (185°F / 85°C). Includes -10AN male fittings for both oil feed and return, as well as 20mm x1.5 and 3/4"-16 center nuts.