The MAF 3.0 is a hot wire mass air flow sensor in an aluminum housing. It operates from a 12V supply and produces a 0-5 V output. The DC voltage is proportional to mass air flow. It is compatible with engines making up to 300 hp. It has a 3.5” round inlet and 3.0” round outlet. Both the inlet and outlet are designed to mate to a flexible tube and be secured with a hose clamp.