This is bushing for the horizontal trunnion for MG TD, TF, MGA and MGB. On the MGB this is only used on the lower hole that is horizontal on the kingpin where the trunnion bolt goes. On the MGB these come installed on the new kingpin and kits we sell that have the kingpin. But sometimes these get damaged when the old trunnion is pushed out. On the MGA and MG TD-TF these same bushings are used on both the upper and lower horizontal bolts so that 4 are used per car while the MGB just uses 2. Cross Reference 330-140.