Walker 1003-1038 Exhaust Gas Temperature (EGT) Sensor

Walker HD EGT Sensor for Exhaust Monitoring

Walker Products HD 1003-1038 is an exhaust gas temperature sensor built for accurate temperature monitoring in the exhaust stream. With a 14.0 mm thread diameter, 685.0 wiring harness length, and a 2-wire rectangular female connector, this Walker EGT sensor is specified for direct replacement service where the original sensor uses the same connector and terminal layout.

Walker Products HD focuses on engine management components built to meet or exceed OEM standards. For drivers searching for an exhaust gas temperature sensor for Mercedes-Benz A6805401717 applications, this part number 1003-1038 provides a service-ready option backed by Walker’s long history in fuel system and sensor manufacturing.

Key Features

• Exhaust Gas Temperature (EGT) sensor for exhaust system temperature feedback
• Walker Products HD line for engine management and emission control service
• 14.0 mm thread diameter for the specified exhaust mounting point
• 685.0 wiring harness length for routing to the factory connection point
• Green rectangular female connector with 2 blade terminals
• 2-wire design with male terminal ends at the sensor interface
• Cross-reference part number: A6805401717

Detailed Description

Walker 1003-1038 is an emission control sensor intended for exhaust temperature measurement in vehicles that use a threaded EGT sensor with the listed connector and terminal configuration. The rectangular green connector, 2-wire layout, and 14.0 mm thread diameter help match the original equipment style connection on the exhaust side of the system. If you are sourcing a Mercedes-Benz A6805401717 replacement, this Walker Products HD sensor is a direct part-number reference to verify against the original unit.

The Walker Products HD brand line is positioned for demanding engine management service, with manufacturing and engineering support focused on accurate part data and OE-level specifications. That makes part number 1003-1038 a practical choice for technicians and owners who need a replacement exhaust gas temperature sensor for Mercedes-Benz applications and other vehicles using the same connector and mounting details.

What It Helps Address

• Fault codes related to exhaust gas temperature sensor performance
• Incorrect exhaust temperature readings reported to the engine control system
• Sensor signal loss caused by damaged wiring or connector wear
• Emission control monitoring issues tied to a failed EGT sensor
• Driveability concerns linked to inaccurate exhaust temperature data

Installation Notes and Tips

Verify the connector shape, terminal count, thread diameter, and harness length against the original sensor before installation. Because EGT sensors mount in the exhaust, allow the system to cool fully before removal and inspect the threaded port for carbon buildup or damage. Confirm the vehicle application by part number and connector style, especially when sourcing a Mercedes-Benz A6805401717 replacement or comparing Walker 1003-1038 to the original sensor.

Quality Assurance

Walker Products has supplied automotive fuel system and engine sensor components since 1946 and operates as an ISO 9001/IATF16949 certified manufacturer. The company states that its products are built to meet or exceed OEM standards and specifications, with internal engineering and product management support for accurate applications and technical documentation.