1/4in Thermocouple Only Open Tip (1.07m) 42in

The 1/4in Thermocouple Only Open Tip (1.07m) 42in from Haltech is a precision temperature measurement sensor engineered for engine tuning, performance diagnostics, and data acquisition on high-performance vehicles. This open-tip thermocouple is essential for serious automotive enthusiasts and professional tuners who need accurate exhaust gas temperature (EGT) monitoring to optimize ignition timing, fuel mapping, and boost control on turbocharged or naturally aspirated engines. Whether you're running a Haltech standalone ECU, engine management system, or aftermarket tuning platform, this sensor provides the real-time thermal data required for safe, repeatable power output and component longevity.

The 1/4in open-tip design allows direct contact with exhaust gas flow, delivering faster response times and more accurate temperature readings compared to sheathed alternatives. At 1.07 meters (42 inches) in length, this thermocouple accommodates mounting positions from the turbo outlet to the exhaust manifold exit, providing flexibility in sensor placement without compromising signal integrity. The open tip construction minimizes thermal lag, critical for real-time engine load detection during transient conditions like acceleration pulls or boost ramps. The 1/4-inch thread diameter is a universal standard in automotive aftermarket applications, ensuring straightforward installation into exhaust bungs or sensor ports on custom headers, manifolds, or turbo housings.

This Haltech thermocouple sensor is ideal for tuners and engine builders working with direct-fire ECU platforms, data logging systems, and closed-loop fuel and ignition control strategies. It's particularly valuable on turbocharged applications where peak EGT management prevents detonation, protects pistons and valves, and informs safe boost ceiling decisions. Installation requires a 1/4in NPT threaded bung in the exhaust system; many performance headers and custom exhaust work already accommodate this standard. The sensor output connects directly to a Haltech CAN gateway, stand-alone ECU, or digital gauge display, enabling live temperature monitoring and logged analysis for dyno sessions, street tuning, and long-term engine health tracking.