OE Part Number: 1K0798741|
Manufacturer's Part Number: 02F141143A
O-ring for the clutch hydraulic hard-line on all manual transmission VW TDIs. Two o-rings are on this line, one at the connection to the slave and one at the connection to the master. Replace this o-ring whenever disconnecting the line or it will leak.
Dime not included, included in photo for reference only.