Walker 1003-1023 Exhaust Gas Temperature (EGT) Sensor

Walker Products HD Exhaust Gas Temperature Sensor

Walker Products HD 1003-1023 is an exhaust gas temperature (EGT) sensor built for diesel emission control systems that rely on accurate exhaust temperature feedback. With a 1080 mm wiring harness, black square female connector, and 14.0 mm thread diameter, this sensor is specified for exhaust mounting and direct replacement service.

Walker Products HD focuses on heavy-duty engine management components engineered to meet or exceed OEM standards. For buyers searching for a Walker EGT sensor, Walker Products HD 1003-1023, or an exhaust gas temperature sensor for diesel truck repair, this part supports precise temperature monitoring in the exhaust stream.

Key Features

• Exhaust gas temperature (EGT) sensor for emission control systems
• Walker Products HD 1003-1023 replacement part number
• 1080 mm wiring harness for extended routing
• Black square female connector with bullet terminals
• 2-wire, 2-terminal design
• 14.0 mm thread diameter
• Mounts at the exhaust location

Detailed Description

Walker Products began serving the automotive aftermarket in 1946 and continues to supply engine sensors and fuel system components backed by in-house manufacturing, engineering, and product management. The Walker Products HD line is positioned for heavy-duty applications where accurate sensor output and OE-style fit are important. Part number 1003-1023 is an EGT sensor intended for exhaust temperature monitoring in diesel emission control systems, helping the vehicle’s control strategy respond to exhaust heat conditions.

This sensor is a practical choice for technicians and owners searching for a replacement EGT sensor for diesel truck exhaust systems, including applications where a square female connector, bullet terminals, and a 14 mm threaded mount are required. It is also relevant for make/model searches tied to heavy-duty vehicle service, including Dodge Ram and Freightliner applications where the correct exhaust gas temperature sensor is needed.

This part cross-references Dorman - HD Solutions 904-7781 for the same application.

What It Helps Address

• Faulty exhaust gas temperature sensor readings
• Diesel emission system warning lights
• Incorrect exhaust temperature feedback to the engine control system
• Hard-to-diagnose drivability issues related to exhaust monitoring
• Replacement needs for damaged sensor wiring or connector interfaces

Installation Notes and Tips

Confirm the connector shape, terminal style, thread diameter, and harness length before installation. Because this sensor mounts in the exhaust, inspect the threaded port and surrounding components for carbon buildup, corrosion, or heat damage before fitting the replacement. Verify the vehicle’s original sensor configuration against the part number 1003-1023 and the listed interchange references before ordering.

For fitment-based searches, use the exact vehicle application data supplied for your truck or diesel platform. If you are replacing an EGT sensor on a Dodge Ram or Freightliner, match the connector and thread specifications to avoid installation issues.

Quality Assurance

Walker Products HD is backed by a company with long-term aftermarket experience and ISO 9001/IATF 16949 certification. The brand states that its engine sensors are manufactured to meet or exceed OEM standards and specifications, with engineering support used to maintain application accuracy and product consistency.