I bouught a B&M hightek transmission cooler. Its tempeture sensor that turns the fan on does not come on till the transmission is very hot. I went to replace the sensor with a adjustable fan controller. The sensor that b&m uses is a 18mm x 1.5 pich design which is a honda tempeture switch. My new fan controller is a 3/8 npt design. I could drill the cooler and retap but I do not want to take any chances of puting allumnim chips inside that will work there way back to the transmission. I seen that a person here had some sort of a tempeture sensor block that the an6 lines could be screwed into and a 3/8 npt sensor could be scrwed into the midle in the block in the flow direction. If you know the part number please let me know if it is earls or areoquip. thanks.