Walker 273-10409 Exhaust Gas Temperature (EGT) Sensor

Walker 273-10409 Exhaust Gas Temperature Sensor

Walker Products 273-10409 is an exhaust gas temperature (EGT) sensor for diesel emission control systems. It is built for exhaust mounting and uses a 2-wire, blade-terminal design with a black oval connector and 14.0 mm thread diameter.

Compatible with 2017-2021 Chevrolet Silverado 2500 HD, 2017-2021 Chevrolet Silverado 3500 HD, 2017-2021 GMC Sierra 2500 HD, and 2017-2021 GMC Sierra 3500 HD, this sensor supports OE-style replacement needs at the turbocharger outlet and before the DPF on listed applications.

Key Features

• Part number: 273-10409
• Exhaust gas temperature sensor for emission control systems
• Exhaust mount location with 14.0 mm thread diameter
• 2-wire design with 2 blade terminals
• Black oval female connector with male terminals
• Wiring harness length: 250.0
• Walker Products engine sensor application

Product Details

Walker Products has supplied fuel system and engine management components since 1946 and manufactures to meet or exceed OEM standards and specifications. The 273-10409 EGT sensor is part of the Walker Products line of engine sensors and is engineered for accurate exhaust temperature monitoring in the applications listed below. This part number 273-10409 also cross-references OE-style applications for the same vehicle coverage.

Vehicle Fitment

• Fits 2019-2021 Chevrolet Silverado 2500 HD, at turbocharger outlet; OE base sensor
• Fits 2019-2021 Chevrolet Silverado 3500 HD, at turbocharger outlet; OE base sensor
• Fits 2019-2021 GMC Sierra 2500 HD, at turbocharger outlet; OE base sensor
• Fits 2019-2021 GMC Sierra 3500 HD, at turbocharger outlet; OE base sensor
• Fits 2017-2018 Chevrolet Silverado 2500 HD, T4 - after turbocharger; Walker Products
• Fits 2017-2018 Chevrolet Silverado 2500 HD, EGT sensor fits before DPF on T5 vehicle; Walker Products
• Fits 2017-2018 Chevrolet Silverado 3500 HD, EGT sensor fits before DPF on T5 vehicle; Walker Products
• Fits 2017-2018 Chevrolet Silverado 3500 HD, T4 - after turbocharger; Walker Products
• Fits 2017-2018 GMC Sierra 2500 HD, EGT sensor fits before DPF on T5 vehicle; Walker Products
• Fits 2017-2018 GMC Sierra 2500 HD, T4 - after turbocharger; Walker Products
• Fits 2017-2018 GMC Sierra 3500 HD, T4 - after turbocharger; Walker Products
• Fits 2017-2018 GMC Sierra 3500 HD, EGT sensor fits before DPF on T5 vehicle; Walker Products

Common Uses

• Replacing a failed exhaust gas temperature sensor on Silverado HD and Sierra HD diesel applications
• Restoring exhaust temperature signal accuracy for emission control monitoring
• Addressing diagnostic trouble codes related to EGT sensor performance
• Correcting turbocharger outlet or pre-DPF sensor faults on listed vehicles
• Supporting proper diesel aftertreatment system operation

Installation Notes

Verify connector shape, terminal count, thread diameter, and mounting location before installation. Match the vehicle’s OE sensor position exactly, since listed applications include both turbocharger outlet and pre-DPF locations depending on model year and configuration. Confirm the part number 273-10409 against the original sensor and vehicle service information before replacement.

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 for the aftermarket.