I looking at a 03 navigator that needs a trans 4r100 i have a 99 expedition i can use for parts will the 4r100 work outta the 99 in the 03?

 

That depends on what engine is in both vehicles and how early the '99 is. Early '99 4R100 transmissions did not have a turbine speed sensor nor an output speed sensor. These sensors are located on top of the transmission. If the '99 has these sensors it should work.

 

Im lookin at a real nice 03 navigator that needs a trans and have a beat up expedition i can steal parts off

 

Im lookin at a real nice 03 navigator that needs a trans and have a beat up expedition i can steal parts off