What Problem This Part Solves
A worn or faulty thermocouple/electrode can cause ignition failure, shutdowns, or unsafe gas flow. This replacement restores accurate flame sensing and reliable ignition so your infrared burner lights consistently and operates safely.
Key Features
OEM Weber thermocouple and electrode assembly for ceramic infrared burners
Monitors flame and enables proper ignition of the infrared burner
Improves safety and prevents unlit gas flow
High-temperature resistant components designed for outdoor grilling
Engineered for exact fit and lasting performance
Compatibility / Fits Models
Fits Weber gas grills equipped with a ceramic infrared burner — confirm your specific model and burner configuration (e.g., Summit/Sear/Infrared models) before ordering to ensure proper compatibility.
Weber Models
1730501, 1740001, 1740301, 1741001, 1741301, 1742001, 1770501, 1780001, 1780301, 1781001, 1781301, 1830501, 1840001, 1840301, 1841001, 1841301, 1870501, 1880001, 1880301, 1881001, 1881301, 2730501, 2740001, 2740301, 2770501, 2780001, 2780301, 2830501, 2840001, 2840301, 2870501, 2880001, 2880301, 291101, 292101, 294001, 298101, 7160001, 7170001, 7171001, 7171068, 7260001, 7270001, 7271001, 7291001, 7291101, 7292001, 7292101, 7360001, 7370001, 7371001, 7460001, 7470001, 7471001, 77160001, 77170001, 77171001, 77260001, 77270001, 77271001, 77360001, 77370001, 77371001, 77460001, 77470001, 77471001, 87171074, 91740301, 91741301, 91780301, 91781301, 91840301, 91841301, 91880301, 91881301, 92740301, 92741301, 92780301, 92781301, 92840301, 92880301, 9293001, 9293101, 9294001, 9294101, 97160001, 97170001, 97171001, 97260001, 97270001, 97271001, 97360001, 97370001, 97371001, 97460001, 97470001, 97471001, Summit E-450, Summit E-470, Summit E-650, Summit E-670, Summit Grill Center, Summit Grill Center L, Summit Grill Center S, Summit S-440, Summit S-450, Summit S-460, Summit S-470, Summit S-640, Summit S-650, Summit S-660, Summit S-670
Installation / Use Instructions (1–3 steps)
Turn off the gas supply and power to the grill, and allow components to cool.
Remove the old thermocouple and electrode assembly from the infrared burner mounting location.
Install the new Weber 70390 unit, secure wiring and fittings, then test for proper ignition and flame sensing.
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FAQ Section (5 questions & answers)
Does this fit my Weber grill?
This thermocouple & electrode assembly fits Weber grills with compatible ceramic infrared burners — check your grill’s model and burner part number before ordering.
What does a thermocouple do?
A thermocouple detects heat and flame presence, signaling the control system that the burner is lit and safe to operate.
What is the electrode for?
The electrode creates the spark needed to ignite the ceramic infrared burner.
How long should this part last?
As an OEM Weber component designed for outdoor grilling, it should last multiple grilling seasons with proper use and maintenance.
Can I install this myself?
If you are comfortable with grill maintenance: turn off gas, replace the old assembly with this OEM part using original mounting points, and test ignition; otherwise consult a qualified technician.
