The Diesel Particulate Filter (DPF) Pressure Sensor measures exhaust pressure, indicating if the Diesel Particulate Filter is clogged. Replacement is essential for better overall drivability and lessens the chance of reduced engine power. Product Features:Direct replacement for a proper fit every timeConstructed of copper, rubber and plastic for performance and durabilityEasy to install - no special tools required during installationThis part has undergone vehicle try-on testing to meet product standards and quality