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Walker 1003-1020 Exhaust Gas Temperature (EGT) Sensor - Before Particulate Filter
| Brand | Walker 1003-1020 |
|---|---|
| Position | Before Particulate Filter |
| Wiring Harness Length | 740.0 |
| Connector Color | Black |
| Mount Location | Exhaust |
| Terminal Type | Bullet |
| Wire Quantity | 2 |
| Connector Shape | Square |
| Terminal Quantity | 2 |
| Connector Gender | Female |
| Terminal Gender | Male |
| Thread Diameter | 14.0 |
| Fits | — |
OE-standard build. Manufactured to meet or exceed OEM specifications.
Exhaust gas temperature sensor. Monitors exhaust heat for accurate engine management.
Square connector. Female connector with bullet terminals for a secure connection.
Cross-references Dorman - HD Solutions 904-7701, 3HTS0243 and 21225020 for the same application. See all 5.
Walker HD Exhaust Gas Temperature Sensor 1003-1020
Walker Products HD 1003-1020 is an exhaust gas temperature (EGT) sensor built for emission control and engine management applications. It uses a 2-wire design with a black square female connector, bullet terminals, and a 14.0 mm thread diameter for a direct-fit style replacement where specified.
Walker Products has supplied fuel system and engine sensor components since 1946, and the Walker Products HD line focuses on OE-style replacement parts for demanding automotive service needs. Part number 1003-1020 is backed by Walker’s engineering, product management, and technical support resources.
Key Features
- Exhaust Gas Temperature (EGT) sensor for emission control systems
- Walker Products HD line replacement sensor
- 2-wire configuration with bullet terminals
- Black square female connector
- 14.0 mm thread diameter
- Exhaust mount location
- 740.0 wiring harness length
Application Details
This sensor is a direct replacement option for vehicles that use the same connector style, thread size, and harness layout. It is listed with cross-reference support for Dorman - HD Solutions 904-7701 and references 3HTS0243, 21225020, 50701300, and 5348000014 for the same application. Use part number 1003-1020 when verifying an EGT sensor replacement for heavy-duty emission control service.
What It Helps Address
- Fault codes related to exhaust gas temperature sensing
- Incorrect EGT readings from a worn or damaged sensor
- Emission control monitoring issues
- Connector or terminal mismatch during sensor replacement
- Harness fitment concerns on exhaust-mounted sensor locations
Installation Notes
Confirm connector shape, connector gender, terminal type, thread diameter, and harness length before installation. Match the exhaust mounting location and verify the vehicle’s original sensor specification before replacing the part. For fitment searches, use the exact part number 1003-1020 and compare the OE connector and thread details to the original sensor.
Quality Assurance
Walker Products is an ISO 9001 and IATF 16949 certified manufacturer. The company states that its engine sensors and related components are produced to meet or exceed OEM standards and specifications, with internal engineering and technical support used to maintain application accuracy and product quality.
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