Unknown ETA - Unable to supply at this time
EAC4647 - Non return valve - item 1 in the diagram
Fits into the tensioner piston housing as used on the following;
X300 - 3.2L, 4.0L - VIN range ALL
XJS - 3.6L, 4.0L - VIN range ALL
XJ6 & XJ12 (XJ40) - 2.9L, 3.2L, 3.6L, 4.0L - VIN range ALL