福特马自达空气流量计 57713215 B57713215A E5T51071 直接替换

Ford/ Mazda/ Mercury air flow meter 57713215, can replace B57713215A and E5T51071; installed between the intake manifold and air filter. Precisely measures incoming air and transmits signal to ECU to control fuel injection ratio for optimal air-fuel mixture. Compatible with Focus, Mondeo, Mazda3, Mazda6 and other models. Installation difficulty: medium; 30-45 minutes; keep intake clean and avoid contact with sensing element. If idle is unstable, acceleration weak, or fuel consumption abnormal, check this part.