Adapter for M57 intake air sensorsAdapter with a diameter of 63.5mm is necessary for mounting the intercooler fan thermo switch and the intake air temperature sensor with the BMW M57 engine. It has sleeves with M10x1 thread for the intercooler fan electric thermo switch and M12x1.5 for the intake air temperature sensor. Recommended sensors: Intercooler fan thermo switch code FE05283 Intake air temperature sensor Autolog AS3226 Price for 1 piece (set does not include sensors)