
Just check the axle code on the sticker
19 3.55 non-limited slip (Econoline, F-150)
18 3.08 non-limited slip (F-150)
17 3.31 non-limited slip (Econoline)
H9 3.55 limited slip (F-150, F-250)
B6 3.73 limited slip (F-150, F-250)
24 3.73 (Econoline)
32 4.10 (Econoline)
35 4.09 (Econoline)
34 3.73 (Econoline)
39 3.55 (Econoline)
52 4.10 (Econoline)
56 4.10 (Econoline)
81 4.63 (Econoline)
27 3.31 non-limited slip (F-250)
26 3.73 non-limited slip (F-250)
41 3.27 non-limited slip (Explorer/Mountaineer)
45 3.55 non-limited slip (Explorer/Mountaineer)
46 3.73 non-limited slip (Explorer/Mountaineer)
42 4.10 non-limited slip (Explorer/Mountaineer)
D1 3.27 limited slip (Explorer/Mountaineer)
D4 3.73 limited slip (Explorer/Mountaineer)
D2 4.10 limited slip (Explorer/Mountaineer)
84 3.45 non-limited slip (Ranger)
86 3.73 non-limited slip (Ranger)
87 4.10 non-limited slip (Ranger)
89 4.56 non-limited slip (Ranger)
F6 3.73 limited slip (Ranger)
F7 4.10 limited slip (Ranger)
92 3.08 non-limited slip (Ranger)
R5 3.55 limited slip (Ranger)
91 3.27 non-limited slip (Ranger)
96 3.73 non-limited slip (Ranger)
R6 3.73 limited slip (Ranger)"