Mass Airflow Sensor: V8 TPI - 86-89F V8 (NEW)READ DESCIPTION On lower LHS of this page IMPORTANT. Brand New Mass Air Flow Sensor for the 86 & 89 Tuned Port Injected 305 5ltr V8 & 5. 7ltr 350 V8 series Choose MAFS carefully as the open & up front "NO return policy" exists to protect everybody from returned samples or mucked around with goods.). These are pre tested in factory production. NO return if somebody even says or suggests it's defective they are NOT Its possible to wreck them on a faulty