Hello dear E53 Community, my Dicker X5E53 3.0d M57/TU BJ 2006 has already over 150,000 km on it and I want to exchange KGE with him precautionaryly. I was with the friendly yesterday and the offer was KGE+sealings+4 screws = 198€. I find it too much for a plastic part with 2 seals and screws. After that I was at the steel pit and there I get the whole set for a fraction of the top sum. Problem is that it is from the company AIC, supposedly own brand. Experience with this? I have read that you should avoid the KGE of Vaico. Does anyone already have experience with KGE of AIC? Or which manufacturer of KGE would you recommend? Do you really need to change the plastic part (ventilation unit 11127799225) or is it enough to replace rubber seals (11127793165 and 11127793166) and filters in the ventilation unit? Thank you for your feedback!