These are direct fit replacement thermocouples for Testarossa and 512TR. The probe and compression nut are SS and come with the correct connector, correct length of conductor and reinforced strain relief. They are $145 each and $8 shipping in CONUS. This is a piece that I made for a TR owner and was duplicated from his original part. If there is some variation in your specific OEM part , I will copy your existing part as well. Feel free to use my email below if there any questions. Image Unavailable, Please Login