I got a 04 FX4 and just wondering what size is the differential. is it the 9.75?
Going to be putting on a bigger cover and just want to double check before ordering. Also what weight lube. The dealer told me the 140 but on the forum some people said the 90.

 

Do you have the 4.6 or the 5.4? If you have the 4.6 it's the 8.8, if it's the 5.4 then yes you have the 9.75.

Lube is suppose to be 75-140.

 

FX4 models come standard with the 5.4 3V and the 9.75 diff.

 

Thanks for the responses it will help me greatly.