Diff & Transfer Box plug washer size

[Buller]

I'm changing the oil in the rear differential and transfer box. Any idea what size the drain and fill plugs washer sizes are?

 

[Shayne]

I bought new plugs from roughtrax and i'd guess the measurements will be shown in their specifications tab ?

 

[chadr]

From memory they're 21mm but as Shayne says, it's probably better to buy a new set of filler and drain plugs - as you'll probably end up butchering them both if they haven't been undone for some time!

BTW - the front diff has a different setup with hex socket plugs and they can be different sizes for drain and filler!!

 

[Buller]

Thanks for the advise, I'll hold of rough trax tomorrow and see if they have the bits.