Whats this?

No big deal just a vent tube. Just route it down so you don't pick up water.

The vendors sell a bent stainless tube version that certainly looks a little more appealing if you want to tidy up the engine bay.

all right thanx. any ideas of where to put it? im a little worried itl get tangled with the half shaft

Normally you want all vent or overflow tubes (coolant and oil) to exit at a point rear of the rear wheels. Personally I'd zip tie it to an appropriate point and tuck it down between the ZF case and mounting ear somewhere.

Julian

Just throw down a few bucks and buy a vendor supplied S/S down tube.