Soft compensational cable for K-type thermocouples. Tefzel core insulation and silicon outer insulation for max 180C. Popular for getting the EGT's signal through the ECM frontplate.
Price is for 10cm (1/3 foot), so order 2..3 "pieces" at minimum for a usable length of 20..30 cm You'll get the whole amount in one piece that you can cut as you like.
There are many standards for thermocouple color-coding, this standard uses green color for K-type
EGT connector (green, but otherwise same in all aspects as the US-yellow connectors).