Setrab Sandwich Adapters mount an oil filter to its base, and itself mounts to your oil filter landing. The adapter also comes with an internal 180°F thermostat, so during operation control of Oil flow can be further regulated by allowing cold oil to bypass the thermostat into the cooler, and when it heats up to the specified temperature it is shut closed and all of it is forced to go through the cooler. This adapter makes it very easy to begin installation or setup of an Oil Cooler as this provides very access for oil flow to and from the cooler. This filter adapter is threaded for 3/4 -16, and comes with M22 Ports for Oil lines. AN adapter fittings sold separately.