the industry standard for passenger vehicles worldwide, usually confroms to 1/8 national pipe thread (npt) for sender units, water and oil. if not, i am sure you could find an adapter / reducer from your local purple pig, hose doctor, enzed etc, shop for about 5 bucks, it shouldn't be an issue. if it is, i'd be glad to help you out even if i have to make the bastard myself!