Walker 1003-1031 Exhaust Gas Temperature (EGT) Sensor - Middle of Particulate Filter

Walker HD Exhaust Gas Temperature Sensor

Walker Products HD 1003-1031 is an exhaust gas temperature (EGT) sensor built for emission control and engine management applications. It uses a 2-wire design with a black oval female connector, blade terminals, and a 12.0 mm thread diameter for a direct-fit style replacement where specified.

Walker Products HD focuses on OE-level manufacturing and technical support, backed by engineering and product management resources. The Walker Products HD line is aimed at dependable sensor replacement for vehicles that need accurate exhaust temperature monitoring to support emissions system performance.

Key Features

• Part number 1003-1031 EGT sensor for emission control service
• 2-wire configuration with 2 terminals
• Black oval connector with female housing and male blade terminals
• Exhaust mount location for temperature sensing in the exhaust stream
• 12.0 mm thread diameter for specified applications
• Wiring harness length: 506.0

Detailed Description

Walker Products HD 1003-1031 is an exhaust gas temperature sensor used to monitor exhaust heat levels in vehicles equipped with EGT-based engine and emissions control strategies. Accurate exhaust temperature feedback helps the control system manage thermal conditions in the exhaust path and maintain proper sensor input for the vehicle’s emission control logic. This part number 1003-1031 is a practical replacement choice when the original sensor shows signs of age, contamination, or electrical failure. It is also referenced against Dorman - HD Solutions 904-7114, Dorman - OE Solutions 904-457, and 4902912 for the same application.

Compatible With Ford F-250 Super Duty and Ford F-350 Super Duty applications where the listed EGT sensor configuration is specified. Use the vehicle’s original connector style, thread size, and mounting location to confirm application before service. The Walker Products HD 1003-1031 is built for direct replacement use in exhaust gas temperature sensor service, including Ford Super Duty diesel applications that rely on exhaust temperature monitoring.

Common Issues This Sensor May Address

• Check engine light related to exhaust temperature sensor faults
• Incorrect exhaust temperature readings in the engine control system
• Sensor signal loss from heat damage or internal electrical failure
• Emission control warnings tied to EGT monitoring
• Driveability concerns caused by inaccurate exhaust temperature input

Installation Notes and Tips

Confirm the connector shape, terminal style, thread diameter, and harness length against the original sensor before installation. Because this part mounts in the exhaust, allow the system to cool fully before removal and inspect the threaded port for carbon buildup or damage. For Ford F-250 Super Duty and Ford F-350 Super Duty service, verify the exact sensor location and connector match to ensure proper installation.

Quality Assurance

Walker Products has supplied automotive fuel system and engine sensor components since 1946 and manufactures to meet or exceed OEM standards and specifications. The company is ISO 9001 and IATF 16949 certified, with in-house engineering and technical support used to maintain product accuracy and application coverage.