Walker 1003-1025 Exhaust Gas Temperature (EGT) Sensor

Walker 1003-1025 Exhaust Gas Temperature Sensor

Walker 1003-1025 is an exhaust gas temperature (EGT) sensor built for exhaust-mounted temperature monitoring in engine management systems. It features a 12.0 mm thread diameter, 495.0 wiring harness length, a white connector, and a 2-wire blade-terminal design for a direct-fit style replacement where this configuration is specified.

Walker Products HD supports aftermarket repair with engine sensors manufactured to meet or exceed OEM standards and specifications. The Walker Products HD line focuses on accurate fitment, application coverage, and technical support for service work on vehicles such as Ford F-150 and Chevrolet Silverado when this sensor configuration matches the original part.

Key Features

• Exhaust gas temperature sensor for exhaust system temperature monitoring
• Walker Products HD part number 1003-1025
• 12.0 mm thread diameter
• 495.0 wiring harness length
• White connector with trapezoid shape
• 2-wire design with blade terminals
• Male connector and female terminal gender configuration
• Mount location: exhaust

Detailed Description

Walker 1003-1025 is an EGT sensor used to measure exhaust temperature as part of the vehicle’s emissions and engine control strategy. The sensor’s exhaust mounting location, 2-wire layout, and trapezoid connector shape help identify the correct replacement when servicing diesel or other exhaust-temperature monitored applications. If you are replacing a worn sensor on Ford F-150 or Chevrolet Silverado models, confirm the connector style, thread size, and harness length against the original unit before installation. Part number 1003-1025 is also referenced as 8980043290 for the same application.

What It Helps Address

• Fault codes related to exhaust gas temperature sensing
• Incorrect exhaust temperature readings
• Sensor signal loss from damaged wiring or connector wear
• Emissions system monitoring issues
• Driveability concerns tied to inaccurate exhaust temperature data

Installation Notes

Verify the 12.0 mm thread diameter, connector shape, terminal type, and harness length before installation. Match the original exhaust sensor routing and connector orientation to avoid strain on the wiring. Confirm vehicle application by VIN and original part number when servicing Ford F-150 or Chevrolet Silverado models, and compare the replacement sensor to the removed unit before final fitment.

Quality Assurance

Walker Products has supplied fuel system and engine management components since 1946 and manufactures to meet or exceed OEM standards and specifications. The company is ISO 9001 and IATF 16949 certified, with engineering and product support used to maintain application accuracy and part quality.