Overview Haltech's professional-grade 1/4" open tip thermocouple delivers precise exhaust gas temperature monitoring for serious engine builds. Essential for turbocharged applications, methanol injection systems, and race engines where thermal management separates reliable power from expensive failures. Technical Specifications Part Number: HT-010866 Probe Diameter: 1/4" (6.35mm) Cable Length: 1.30m (51") Tip Configuration: Open tip design Temperature Range: Up to 1000°C continuous operation Response Time: Fast-response K-type thermocouple Why You Need This Exhaust gas temperature monitoring isn't optional on serious builds — it's insurance against catastrophic engine damage. Whether you're running a big turbo 2JZ build, an LS swap pushing serious boost, or converting a classic to EFI with forced induction, knowing your EGTs prevents the expensive mistakes that happen when you're flying blind. Pre-turbine temps climbing past 950°C? You'll know before pistons start melting. Post-turbo readings help dial in fuel maps and catch lean conditions that destroy engines in seconds. This 1/4" open tip design offers the perfect balance of durability and response time. Unlike cheaper closed-tip probes that read slowly and break easily in high-vibration applications, Haltech's open tip construction gives you real-time temperature data when it matters most. The 51" cable length suits most engine bay installations — long enough to reach from turbo manifold to ECU location in swapped chassis applications, yet manageable for routing without excess cable cluttering your loom. ECU & System Compatibility Direct compatibility with Haltech Elite 550, 750, 1000, 1500, 2000, and 2500 ECUs, plus the full Nexus R3 and R5 range. Also works with Haltech's WB1 and WB2 wideband controllers for comprehensive engine monitoring setups. Contact our technical team to confirm optimal input allocation for your specific ECU configuration. What's in the Box 1x Haltech 1/4" open tip thermocouple probe 1x 1.30m (51") connecting cable Thermocouple connector (K-type) Complete Your Build Most customers running forced induction setups also add wideband oxygen sensors for comprehensive air-fuel monitoring, plus additional thermocouples for inlet air temperature sensing on intercooled applications. Consider our pre-made engine looms to integrate temperature monitoring professionally into your build. Our technical team can recommend the complete monitoring package for your specific platform — whether that's a Honda K-series turbo build, Skyline RB conversion, or classic British car EFI upgrade. All items held in UK stock for rapid despatch, with expert pre-sales advice to ensure you're monitoring the right parameters for reliable power.
