997 110 728 90 · nipple Porsche genuine (OEM) part number 997 110 728 90, nipple. Fitted on (3)NIPPLE — pos 21 (KAT1029.BIN)NIPPLE — pos 15 (KAT1029.BIN)NIPPLE — pos 17 (KAT1029.BIN) Open the interactive exploded diagram →