Series I 4.2 E-Type FHC and OTS from engine 7E.4606
E-Type Series I 2+2
E-Type Series II
E-Type Series III V-12
Later MK II (KJ-Series engines from 7659; LE-Series engines from 2533-on; all 7J-Series engines.)
Later MK X 4.2 (Engine 7D.52037-on)
Later 3.4S and 3.8S(3.4 from engine 7B.5213; 3.8 from Engine 7B.58367)
Note that this part is about 3-3/4" long and the earlier clutch slave (part number GR-4252-364) is about 3" long.