First Post all, recently had issues with gearbox failure on my t4 syncro. No prior symptoms and when out 40 miles from home the gearbox started to fail. Drove straight to a gearbox specialist garage that I have never used and been told a whole new gearbox required. After 4 weeks they have told me they can't resource one, I am now finding the same issue. I have been given the following code for obtaining "o2g 300012 ax". Can anyone point me in the right direction?