Description Park lock linkage, turnbuckle. Tractors: 706, 756, 766, 806, 726, 756, 966, 1026, 1066, 1256, 1456, 1456, 1466, 1566, 1568. Also industrial versions of above. (A) This item is a suitable alternative for the following: 390856R1, 27456020, 390856R91, 64578C91