VAG angular gearbox differences

Hi guys, I’m looking for advice from experts who know the VAG gears. I get so many different statements that I hope I can find more insights here and ask this question in the VW, Skoda and AUDI forums at the same time. I drive a Soda Yeti, 09/2009 1.8TSI petrol 4 x 4 , engine CDAA, gearbox LHC. Type LHC is apparently identical to gear KSC. The angled gear is defective there. I somehow exploded at 170,000km / Case break due to internal mechanical damage probably. I need complete replacement and the search for it is difficult. The alleged today’s part no. of the angular gearbox is 0AV409053AE my mechanic says on the case he reads 0AV409053P. On the Internet I find various angular gearbox with 409053 but other pre & renumbers. The one supplier says that fits anyway, the angular gearbox would all be the same of the type at VAG, others say that does not fit because other Year of construction, wrong letter. I hope we have here a few screwdrivers who know each other with all the VAG designations and can give me advice. Or, if one has a suitable part from a butcher etc.. gladly offer…. Thank you, Gruss Joachim