RaceGrade Thermocouple TC4C

The main difference is the probe diameter. The TC4C is 1/4-inch thick, whereas the TC2C is 1/8-inch. The thicker TC4C offers greater durability and heat resistance at the cost of slightly slower response time.

A closed-end (closed tip) design encases the sensing element within the outer sheath. This protects it from oxidation, chemical corrosion, and physical debris in the exhaust stream, ensuring a longer service life.

You will need a 1/4-inch compression fitting (weld bung) to mount this sensor into your exhaust manifold or downpipe. The smaller 1/8-inch fittings used for the TC2C will not fit this probe.

Yes, but not directly into a standard voltage input. Like all K-Type thermocouples, it requires a Thermocouple Amplifier (TCA) or an ECU specifically equipped with thermocouple inputs to interpret the signal.

Yes. The robust 1/4-inch design makes it particularly well-suited for high-heat, high-pressure turbocharged applications where thinner probes might fail or melt under extreme stress.