The 2006 F-150 with a 5.4-liter V8 uses a four-speed automatic transmission, part of Ford’s 4R70W family.
For context, this generation (2004–2008) paired the 5.4L with a four-speed auto. A six-speed unit (6R80) was introduced with the 2009 model year, replacing the earlier four-speed setup in most F-150 configurations. Some service literature also references a minor variant within the same family, occasionally labeled 4R75W, as part of parts‑sourcing updates.
Overview of the transmission by model year
The 5.4L V8 in the 2006 F-150 was matched to Ford's four-speed automatic transmission. This setup was standard on the 2004–2008 F-150 lineup and is a hallmark of the pre-6-speed era for the truck.
Variant considerations
If you need exact parts or a rebuild, verify the transmission code on the unit itself or via the VIN. Some catalogs may list a variant such as 4R75W, but the 2006 5.4 F-150 typically shipped with the 4R70W family core.
Maintenance notes
As with any automatic, use the recommended transmission fluid, follow service intervals, and monitor shifting behavior. For specific fluid type and timing, consult the owner’s manual or a Ford dealership with your VIN.
Summary
The 2006 F-150 5.4 uses a four-speed automatic (4R70W family). A six-speed automatic (6R80) arrived in 2009, but it does not apply to the 2006 model year. For precise parts and service details, check the transmission tag or VIN.