I need this guitar tuner: GOTOH SG301-04 MG-T

A Google search for that product only shows a few Ukranian stores, not even japanese ones.
It's going to be difficult to find a place that sells just single tuners. Very few places do that, and they probably don't have that exact one. I'd call up a service tech/center for whatever guitar you're trying to repair, and see if they can get the part ordered from the manufacturer.

Otherwise, you might have to live with a key that looks slightly different (you can find specs on dimensions and just find one that fits) or replace the whole set (again, I'm sure someone makes a set with the same dimensions that would just drop in).
Guitarfetish carries Gotoh style tuners, they may match you'll have to check. They only sell sets, but the sets are $25ish
2002 PRS CE22
2013 G&L ASAT Deluxe
2009 Epiphone G-400 (SH-4)
Marshall JCM2000 DSL100
Krank 1980 Jr 20watt
Krank Rev 4x12 (eminence V12)
GFS Greenie/Digitech Bad Monkey
Morley Bad Horsie 2
MXR Smart Gate
i'm looking for the full set, thanks for the store indication but they don't have those
Last edited by BananaJoe at Aug 14, 2013,
Not that model though. Those have the offset set screw, they won't replace the SG301 without modification if the headstock is already drilled.