Oil thermostat for 914 on Searey

914 has no oil thermostat. 

Dry sump not supported.

I installed a Thermostasis (designed for Rotax 912-914 engines SLSA and experimental LSA) on my 912 ULS last summer and it works absolutely perfect winter and summer, one of the best upgrades I did to my aircraft. It will work on your Rotax 914.

https://www.aircraftspruce.com/catalog/eppages/xcomthermostat.php

I have it on my 914 and 912s. No more waiting for the oil to warm up on the 912s.Highly recommend along with an oil pre heater if temperature is below 40deg.