Is your Duramax stuck in constant regen, losing power, or throwing DPF-related codes? The Walker Differential Pressure (DPF) Sensor restores the critical data your emissions system needs to function correctly. This sensor measures exhaust pressure before and after the diesel particulate filter, allowing your ECM to determine soot load and trigger proper regeneration cycles. When it starts to fail, you can see excessive regens, poor fuel economy, reduced power, or even no-start conditions. Replacing it with a Walker sensor restores your truck to normal operation, with proper regen, improved efficiency, and reliable performance whether you're daily driving or towing heavy loads.

Built to withstand extreme exhaust conditions, the Walker DPF sensor is manufactured from high-quality, heat-resistant materials that withstand constant exposure to high temperatures, soot, and vibration. Its internal components are engineered to accurately measure pressure differences across the DPF and deliver a stable, consistent signal output to the ECM over time. Fully designed and tested to meet OE specifications for fit, form, and function, Walker sensors provide dependable durability and long service life in harsh diesel environments.