They're different sizes for the loom mate. The original loom doesn't go all the way to the post cat, as its the post cat that has the longer length lead.You say that Danny, but there is two lengths.
However I'm pretty sure that the shorter length works on both so not sure why the different sizes.
If u buy the bosch sensor it comes with a crap load of wire so just cut it to your desired length... use the old sensor as a guide...