Purpose and function Intake temperature sensor designed for the 5.9L engine series. It measures intake air temperature and provides the engine control system with the temperature input needed for proper fuel and ignition control. Compatibility Fits a range of models from 5 to 2003 for the 5.9L engine series. Confirm fitment for your exact vehicle before . Replaces part numbers such as 501497AA and 3865366 (and other OEM equivalents). Verify compatibility with your vehicle or parts list to avoid delays. Construction and reliability Constructed from metal and plastic, and tested extensively for dependable operation. Built to withstand routine engine compartment conditions. Installation and serviceability Directreplacement design for a straightforward swap. Installation requires no special tools or advanced skills, making it suitable for routine maintenance or quick roadside repairs. Key benefits — why you need this sensor Restores accurate intake temperature feedback to the vehicle computer so the engine can manage fuel and ignition as designed. Minimizes diagnostic time and simplifies replacement with a directfit part and common OEM crossreference numbers. Durable metalandplastic construction for longterm, dependable operation under normal service conditions. Typical use scenarios 1. a failed or intermittent intake temperature sensor on a 5.9L engine to clear a related checkengine light and restore correct sensor input. 2. During routine tuneup or maintenance when intake components are being inspected or replaced and the sensor shows wear or poor readings. 3. As part of an engine rebuild or intakemanifold service where the intake temperature sensor is replaced to ensure reliable engine control inputs. Please confirm exact modelyear and part number compatibility before ordering.