I look up in the autozone (I know, I know) website and they show part number TU68 as fitting my truck but it's an M16 thread. The large two prong unit is most likely an M16 but the two smaller ones that are single wire look to be closer to an american 1/8 such as the TU89 they have listed (although it says it won't fit my vehicle). Anyone have a part number for a small diameter (much smaller than an M16 thread) single wire temp sender unit for this engine?