Walker 1003-1009 Exhaust Gas Temperature (EGT) Sensor

Walker Products HD Exhaust Gas Temperature Sensor

Walker Products HD 1003-1009 is an exhaust gas temperature (EGT) sensor built for accurate exhaust monitoring in diesel emission control systems. It features a 14.0 mm thread diameter, 2-wire layout, oval black female connector, and a blade-style terminal design for direct replacement service.

Walker Products has supplied fuel system and engine management components since 1946, with manufacturing and engineering support focused on OEM-level specifications. The Walker Products HD line brings that experience to emission control sensors for service on applications such as Dodge Ram and Mitsubishi Fuso vehicles.

Key Features

• Part number: 1003-1009
• Exhaust gas temperature (EGT) sensor for emission control systems
• 14.0 mm thread diameter for exhaust mounting
• 2-wire sensor design with 2 terminals
• Black oval female connector with blade-style terminals
• Wire harness length: 661.0
• Mount location: exhaust
• Walker Products HD product line for engine management service

Detailed Description

Walker Products HD 1003-1009 is an EGT sensor used to monitor exhaust temperature in diesel exhaust aftertreatment and engine management systems. The sensor’s exhaust-mounted design, oval connector, and blade terminal configuration support straightforward replacement where the original sensor uses the same electrical and thread specifications. This part number 1003-1009 is a practical service option for Dodge Ram and Mitsubishi Fuso applications that require an exhaust gas temperature sensor with the listed connector and thread details.

This part cross-references Mitsubishi ME230527 and ME557325 for the same application.

What It Helps Address

• Fault codes related to exhaust gas temperature sensing
• Incorrect exhaust temperature readings
• Diesel emission system monitoring issues
• Sensor connector or terminal mismatch during replacement
• Service needs on Dodge Ram and Mitsubishi Fuso exhaust sensor applications

Installation Notes and Tips

Verify the connector shape, terminal count, thread diameter, and harness length against the original sensor before installation. Confirm the exhaust mounting location and inspect the wiring path for heat damage, corrosion, or connector wear. For best results, compare the original part number and vehicle application details before replacing the sensor.

Quality Assurance

Walker Products is an ISO 9001/IATF 16949 certified manufacturer with in-house engineering, product management, and manufacturing support. The company states its engine sensors are produced to meet or exceed OEM standards and specifications.