1/4" Open Tip Thermocouple only - (2.21m) 87" Long Length: 2.21m (87")

Overview

Haltech's 1/4" open tip thermocouple delivers precision temperature monitoring for EGT measurement in high-performance builds. At 2.21m (87") length, this probe reaches exhaust manifolds and turbo housings in the most challenging engine bay layouts, from LS swaps in S-bodies to RB26 builds in R32-34 Skylines.

Technical Specifications

• Part Number: HT-010874
• Probe Diameter: 1/4" (6.35mm)
• Cable Length: 2.21m (87")
• Tip Type: Open (exposed junction)
• Temperature Range: Up to 1200°C
• Response Time: Ultra-fast (open junction design)

Why You Need This

Exhaust gas temperature monitoring is critical for turbo longevity and safe tuning, especially on high-boost builds. The open tip design provides the fastest response time for real-time EGT readings, essential when tuning aggressive timing maps or monitoring knock conditions. We've seen too many expensive turbo failures from builders running blind on EGT — particularly on 2JZ-GTE swaps pushing 400+ bhp where pre-turbine temperatures can spike dangerously fast under load.

The 87" cable length handles virtually any installation scenario. Perfect for rear-mounted turbos on LS conversions, longitudinal SR20DET swaps, or reaching multiple cylinders on built RB engines. The 1/4" diameter threads into most standard EGT bungs, while the open junction design eliminates the response lag you get with sheathed probes — crucial when your ECU needs instant temperature feedback for boost control and ignition timing.

ECU & System Compatibility

Compatible with all Haltech Elite series ECUs (550, 750, 1000, 1500, 2000, 2500) and Nexus R3/R5 units equipped with thermocouple inputs. Also works with Haltech's dedicated EGT amplifiers and data logging systems. Contact our team to confirm thermocouple input configuration on your specific ECU setup.

What's in the Box

• 1 x Haltech 1/4" open tip thermocouple probe
• 2.21m (87") integrated cable
• Connection terminals

Complete Your Build

Most customers fitting EGT monitoring also need quality EGT bungs for manifold installation, plus proper routing clips for the extended cable length. Consider adding a Haltech wideband O2 controller for complete air-fuel monitoring alongside your EGT setup. Billy's stocks the complete Haltech temperature monitoring range with same-day despatch from our UK warehouse, plus our technicians can advise on optimal probe placement for your specific build and tuning requirements.