Is your Duramax running rough, lacking power, or burning more fuel than it should? The Walker Mass Air Flow (MAF) Sensor is designed to restore accurate airflow readings, allowing your engine to perform at its full potential. By precisely measuring the volume and temperature of air entering the intake, this sensor allows your ECM to calculate fuel delivery properly, boost, and overall efficiency. A failing MAF sensor can cause hesitation, poor throttle response, and check engine lights, but replacing it brings back smooth acceleration, consistent power, and reliable drivability, whether you're towing or daily driving.

Built to withstand demanding engine conditions, the Walker MAF Sensor is constructed from high-quality materials that resist heat, vibration, and contamination from the intake system. Its durable design protects the sensitive sensing elements from debris and airflow disruptions, which are common causes of failure. Engineered to meet or exceed OE specifications and 100% tested for fit, form, and function, this sensor provides a dependable direct-fit replacement that delivers long-lasting accuracy and reliability in harsh diesel environments