EGT Probe Exhaust Gas Temperature Sensor - 1/8" Diameter


• EGT-AP series
• Probe diameter 1/8 inch (0.125 inch)
• Exposed Tip Sensing Junction (Fast Response)
• Response time constant: 250 milliseconds
• Includes 316 SS adjustable compression fitting

Applications: Motor Sports, Marine, Aviation, Power Gen, Research & Development, Alternative Energy, Military
Other Uses: Heater Flue Gas, Process Control Systems, Boilers, Die Casting

(Recommended for fuel types: Gasoline, Natural gas, & Alcohols)


The Exhaust Gas Temperature Sensor is specifically designed for use in racing, tuning, and testing applications. Made in the USA from superior materials. The Exposed Tip sensing junction provides immediate response to dynamic temperature changes.

The Exhaust Gas Temperature Probe is capable of surviving extreme vibration and heat up to 2300 degrees F (1300 degrees C). The EGT probe will fit most internal combustion engine exhaust systems from approximately .750 inch diameter up to about 4 inch diameter with nominal installation modifications. The EGT probe is 0.125" diameter (3.175 mm) with a 90-degree bend to accommodate tight mounting locations. An adjustable (316 Stainless Steel) 1/8" NPT compression fitting adapter is included. The EGT probe cable lead length is 6 feet (1.8 meters).

The probe cable is over-braided in stainless steel for heavy-duty abrasion resistance. The signal wires are FEP insulated. Designed to deliver high performance, high temperature measurements, reliably and consistently.

These high temperature sensors are the choice for professional racing teams, R&D test labs, and enthusiasts. The EGT probes can be used for many different applications, including… but not limited to… Karts, Drag Racing, Formula 1, NASCAR, Off Road, Snowmobiles, Aviation, and Marine Racing.

IMPORTANT NOTE: 1/8" probes are not recommended for applications with high Exhaust Gas velocity or mounting pre-turbo (choose a 3/16" OD or 1/4" OD probe). Please confirm with your instrument manufacturer that the instrument is compatible with a Type K thermocouple sensor.

Our probes are made from the highest quality materials and designed for withstanding extreme environments.

Our Exhaust Gas Temperature Sensors, Accessories and Electronics are in-stock and ready for fast delivery. Need help making a selection? Use our EGT Probe Comparison Chart. For additional pricing and technical questions, contact us now to speak to an experienced application engineer.


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Thermocouple type: 

Type K

Temperature Range:

-148°F to 2372°F (-100°C to 1300°C)


+/-0.4% of reading or about +/- 1.1°C (Special Limits of Error)

Probe Diameter:

1/8 inch (0.125 inch) (3.175 mm)

Max Tip Insertion Depth:

1.2 inch (30.48 mm)

Response Time:

250 milliseconds

Outer Sheath Material:

Inconel 600 protective sheathing

Sheath Wall Thickness:

0.015" (.38 mm), MgO insulated


Stainless steel over-braid cable with FEP insulated conductors; 6 foot

Included Compression Fitting:

316 stainless steel, adjustable, 1/8 inch –27 NPT male thread


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