Ball Joint Upper FBJ5035 First Line. Part Number FBJ5035. FIRST LINE FBJ5035. FORD 1520588, 5021429, 6060971, 6110512, 72GB3263A2E, 78GB3263AB, 880X3K209FA. Number of Rivet Holes 3. Type Ball Joint. Fitting Position: Front Axle Left; Fitting Position: Front Axle Right; Fitting Position: Upper; Construction Year from: 09/1982; Construction Year to: 02/1985.