Get the axle code from the sticker on the driver side door.
|Ford Axle Codes, F-Series|
|Ratio||Open||Limited Slip||Electronic Locking|
|Ford Axles, F-150|
|Axle Code||Axle||Note||Capacity||Gear Ratio||Splines||Year / Vehicle|
|19||Ford||Open||3800||3.55||31||F-150 / Expedition|
|H9||Ford||Limited Slip||3800||3.55||31||1982-2012 F-150
1985-2011 Panther platform
May have been used on the 1983-1986 Expedition
The Ford 8.8” is manufactured at the Sterling Axle Plant in Sterling Heights, MI. It was first used in model year 1983 Ford trucks.
Tip: count the lug nuts on one of the wheels.
If you have 7 you have the 10.25 differential.
If you have 6 nuts and a 5.4 engine you have the 9.75 differential.
If you have 5 and either a 4.6 or a 4.2 you have the 8.8 differential.