Walker 273-10420 Exhaust Gas Temperature (EGT) Sensor

Walker Products EGT Sensor for EGR Monitoring

Walker Products 273-10420 is an exhaust gas temperature (EGT) sensor built for exhaust-side temperature monitoring in diesel emission control systems. With a 14.0 mm thread diameter, 280.0 wiring harness length, gray oval female connector, and 2-wire blade terminal design, it is a direct-fit style replacement for select Chevrolet Silverado 2500 HD, Silverado 3500 HD, GMC Sierra 2500 HD, and Sierra 3500 HD applications.

Walker Products has supplied fuel system and engine management components since 1946, and the Walker Products line focuses on OE-style replacement parts for emission control and sensor applications. Part number 273-10420 is engineered to meet the fit and electrical connection requirements of the listed vehicles.

Key Features

• Exhaust Gas Temperature (EGT) sensor for emission control monitoring
• 14.0 mm thread diameter for exhaust mounting
• 280.0 wiring harness length
• Gray oval connector with female housing
• 2-wire, 2-terminal blade connection
• Terminal gender: male
• Mount location: exhaust
• Walker Products part number 273-10420

Vehicle Fitment

• Fits 2021 Chevrolet Silverado 2500 HD, at EGR cooler; OE base sensor.
• Fits 2021 Chevrolet Silverado 3500 HD, at EGR cooler; OE base sensor.
• Fits 2021 GMC Sierra 2500 HD, at EGR cooler; OE base sensor.
• Fits 2021 GMC Sierra 3500 HD, at EGR cooler; OE base sensor.
• Fits 2017-2020 Chevrolet Silverado 2500 HD, EGR system; position 2; Walker Products.
• Fits 2017-2020 Chevrolet Silverado 3500 HD, EGR system; position 2; Walker Products.
• Fits 2017-2020 GMC Sierra 2500 HD, EGR system; position 2; Walker Products.
• Fits 2017-2020 GMC Sierra 3500 HD, EGR system; position 2; Walker Products.

What This Sensor Helps Address

• Fault codes related to exhaust gas temperature sensing
• Incorrect EGR system temperature readings
• Sensor connector or wiring mismatch during replacement
• Emission control performance issues tied to a failing EGT sensor
• Service replacement needs on Silverado 2500 HD, Silverado 3500 HD, Sierra 2500 HD, and Sierra 3500 HD diesel applications

Installation Notes and Tips

Confirm connector shape, terminal count, and thread diameter before installation. This sensor uses a gray oval female connector, 2-wire blade terminals, and a 14.0 mm threaded mount at the exhaust location. Verify the vehicle’s EGR system position and OE sensor reference before ordering part number 273-10420.

Quality Assurance

Walker Products manufactures engine sensors and fuel system components to meet or exceed OEM standards and specifications. The company supports production with in-house engineering, product management, and technical documentation, and operates as an ISO 9001/IATF16949 certified manufacturer.