i dont think there is one, u can tell the difference between the front and rear, because the front come apart in 2 peices while the rear attaches to the control arm and i a 1 peice. hopefully i wont have to do my suspension again. i hate using spring compressors, at least the ones u have to keep cranking by hand and u have to do them evenly but even if u do the spring always bends weird. i used to tear my hands up working on suspension.