The 4cyl manual tranny has a breather cap on the top of the main housing. When I had my tranny out the last time, I drilled and tapped it for an NPT fitting and vented it up to the engine compartment. The t-case breathes through the boot.


'06 Dakota QC 4.7 6sp 4x4
'88 Mighty Max
'77 KZ1000 fun old bike