055 129 405 F · main jet Audi genuine (OEM) part number 055 129 405 F, main jet. Fitted on (3)MAIN JET — pos (13) (KAT003.BIN)MAIN JET — pos (13) (KAT008.BIN)MAIN JET — pos (20) (KAT015.BIN) Open the interactive exploded diagram →