GReddy Oil Cooler Adaptor W/Thermostat 12401123

This GReddy Oil Cooler adaptor is the correct way to run a "DO IT YOURSELF" Oil Cooler. This SANDWICH Style fitting goes between your oil filter and the block. It has (2) Inlet and outlet -10AN fittings to run an oil cooler off of. The most important part of this is the built in Thermostat. This allows for quick engine warm up and maintains a safe oil pressure upon startup. Without using a thermostat, some oil coolers take a while to fill up and build pressure giving longer duration to get proper oil circulation within the motor. The thermostat open temperature ranges from 71deg~85deg Celcius. Thread pitch on this center bolt is 3/4X16UNF so fitting on a S13 SR20DET and KA should not be a problem. O-rings are also included. Nissan Engines we tried this one: KA24DE, SR20DET(s13), All RB Motors, CA18DET ***please take note: S14 and S15 SR uses a M20x1.5 Center Bolt.*** ----VERY IMPORTANT: When selecting M20x1.5, you have to use a 3/4x16unf filter. The Female side going to the block will be M20x1.5, but the male side going to the filter will be 3/4x16UNF