Temperature sensor from Koso engineered for air-cooled engines.

Screw the M14 ring directly under the spark plug to monitor cylinder temperature in real time. Designed for Koso and Stage6 thermometers with black connector. Measuring range 0–150°C.

Fits 2-stroke engines with BR7, BR9 spark plugs and similar M14 configurations. Package includes 1 sensor unit plus 5 spare rings for extended use.

Black plug connector (standard, non-waterproof design).

Essential for tuning and engine diagnostics on AC-cooled performance builds.