I know that on my 04 Ranger FX4 the rear end was limited slip. Is this the same for my 04 FX4 F150?

 

I suspect it would have limited-slip as part of it's offroad package.

However, the best way to be sure is to either find the 'build' sheet, usually tucked up underneath the springs in the seat, or to check the axle code located in the door jamb, also on the tag on the axle.

Usually a 2-digit code - there are plenty of sites that can help decode it. Typically, if it's two numbers - it's non-LS, if it's a number and a letter, then it should be LS.

 

thanks I'll try to check it out

 

yes.

 

Thanks