Hello,
Hoping this forum can assist with recommendation on the tool hex or T type key that fits the female hex in the transfer case fill plug on a 2008 kia sportage v6 4wd.
I appreciate if others have figured it out - the distance across the flats is 0.417" and 0.444" across corners - this appears to correspond to either 13/32 which may be a little undersized, 11m and/or 7/16 - the sizes attempted to this point are 11m, 7/16, 12mm all do not fit or do not provide the necessary contact force to do anything but lead to rounding the hole.
Thanks all and ya got to be smarter than the fill plug - this one has had me doing down-ups and touring all local auto parts stores - dealer indicated a 14mm allen key and I spared myself chasing that rabbit hole based upon my hex measurements
Andy