mrcrunch Posted February 3, 2022 Posted February 3, 2022 Hello. I would like to weld up my own down pipe on my a3. I need to buy a flange so that I can get started, I dont have time to take the exhaust off and measure it myself. Would anyone know what size of flange I would need for my turbo wastegate? As far as I know my turbo oem no: 54399880048 Thanks in advance.
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