|
Identifying
Your Axle From The Axle Tag:
You
can identify which axle you have by the tag attached to the
inspection cover.
Here is an example of an axle tag:
Looking
at that tag, you can see the gear ratio stamped on the lower left, and
the axle size (ring gear diameter) stamped in the bottom middle.
So
looking at the axle tag above, you can see it's a 3.73 gear ratio in a
7.5 inch axle.
And
looking at the axle tag above, you can see it's a 3.73 gear ratio with a
limited slip in a 8.8 inch axle.
Axle
Codes (Door Sticker):
Rear
axle codes can be found on the Safety Standard Certification label
attached to the left drivers side door lock post. The code
appears as a number or letter/number combination in the 'Axle' column
of the label.
If
you look at the 'AXLE' section on the label above, you'll see that
this Ranger has a 'F7' axle code. Using the chart below, we know that
this axle is a 7.5-Inch axle with a 4.10 limited slip.
Axle
codes for Ranger, Bronco II, Explorer and Aerostar (included because 4.10
gears and limited slips are more common than you'd expect)
|
Aerostar |
|
Code
|
Description
|
Capacity
|
Ratio
|
|
22
|
open
7.5"
|
2950
|
4.10
|
|
23
|
open
7.5"
|
2950
|
3.45
|
|
24
|
open
7.5"
|
2950
|
3.73
|
|
25
|
open
8.8"
|
2950
|
3.27
|
|
29
|
open
8.8"
|
2950
|
3.55
|
|
B2
|
L/S
7.5"
|
2950
|
4.10
|
|
B4
|
L/S
7.5"
|
2950
|
3.73
|
|
B5
|
L/S
8.8"
|
2950
|
3.55
|
|
B9
|
L/S
8.8"
|
2950
|
3.55
|
| (Note:
Aerostars with axle codes starting with "1" are Spicer/Dana
30 axles with Aluminum housings) |
|
Bronco
II |
|
Code
|
Description
|
Capacity
|
Ratio
|
|
42
|
open
7.5"
|
2640
|
3.45
|
|
44
|
open
7.5"
|
2640
|
3.73
|
|
47
|
open
7.5"
|
2640
|
4.10
|
|
D2
|
L/S
7.5"
|
2640
|
3.45
|
|
D4
|
L/S
7.5"
|
2640
|
3.73
|
|
D7
|
L/S
7.5"
|
2640
|
4.10
|
|
Ranger |
|
Code
|
Description
|
Capacity
|
Ratio
|
|
72
|
open
6-7/8"
|
2200
|
3.08
|
|
74
|
open
6-7/8"
|
2200
|
3.45
|
|
82
|
open
7.5"
|
2750
|
3.08
|
|
84
|
open
7.5"
|
2750
|
3.45
|
|
85
|
open 7.5"
|
2750
|
3.55
|
|
86
|
open
7.5"
|
2750
|
3.73
|
|
87
|
open
7.5"
|
2750
|
4.10
|
|
89 (1992-1998)
|
open 7.5"
|
|
4.10
|
|
89 (1999-2001)
|
open 7.5"
|
|
4.56
|
|
91
|
open
8.8"
|
2750
|
3.27
|
|
92
|
open
8.8"
|
2750
|
3.08
|
|
95
|
open
8.8"
|
2750
|
3.55
|
|
96
|
open
8.8"
|
2750
|
3.73
|
|
97
|
open
8.8"
|
2750
|
4.10
|
|
98
|
open
8.8"
|
2750
|
4.56
|
|
F4
|
L/S
7.5"
|
2750
|
3.45
|
|
F5
|
L/S
7.5"
|
2750
|
3.55
|
|
F6
|
L/S
7.5"
|
2750
|
3.73
|
|
F7
|
L/S
7.5"
|
2750
|
4.10
|
|
K6
|
L/S 8.8"
|
|
4.10
|
|
R5
|
L/S
8.8"
|
2750
|
3.55
|
|
R6
|
L/S
8.8"
|
2750
|
3.73
|
|
R7
|
L/S
8.8"
|
2750
|
4.10
|
|
R8
|
L/S
8.8"
|
2750
|
4.56
|
| (Note 4.56
geared axles '99-up are 31-spline) |
|
Explorer |
|
Code
|
Description
|
Capacity
|
Ratio
|
|
41
|
Open
8.8"
|
3200
|
3.27
|
|
42 |
Open 8.8" |
3200 |
4.10 |
|
43 |
Open
8.8" |
3200 |
3.08 |
|
44
|
Open
8.8"
|
3200
|
3.73
|
|
45
|
Open
8.8"
|
3200
|
3.55
|
|
46
|
Open 8.8"
|
3200
|
3.73
|
|
D1
|
L/S
8.8"
|
3200
|
3.27
|
|
D2
|
L/S
8.8"
|
3200
|
4.10
|
|
D4
|
L/S
8.8"
|
3200
|
3.73
|
|
D5
|
L/S
8.8"
|
3200
|
3.55
|
|
L73
|
L/S
8.8"
|
3200
|
3.73
|
|
L - Limited Slip Differential
C - Conventional Differential
|
|
