The 5R55E Transmission is produced by Ford Motor Company and was introduced in the 1997 model year. It is the first 5 speed automatic found in domestic vehicles. It is currently found in the 1997 Aerostar Van, 1997-2001 Ranger Trucks (both 2WD & 4WD), and the 1997-2001 Explorer vehicles, equiped with the 4.0L engine.

This manual can also be used to rebuild the 5R44E transmission found in later model Ford Rangers and other models. The 5R55E unit is very similar to the 4R44E, but has a different computer strategy. Many of the parts between the 4R44E and the 5R55E units may look the same, but are not interchangeable.

Note: This manual cannot be used to rebuild the 4R44E transmission.