I have a 2008 XLT and I was wondering if I have a locking differential. I'm almost positive I don’t. But I was just wondering if I could install one because I go into the mountains to shoot a lot and some of the roads are pretty sketchy and I don’t like driving in 4 wheel all the time. I kind of new to the whole truck scene, however I do have some pretty sweet mods I’m waiting to put on my truck. Anyways anything helps! Thanks.

 

What does the Axle code say on your door sticker? You may have a limited slip differential but you do not have a locker.

 

It says 19 under axel but I’m sure that doesn’t mean anything. I was in the mud the other day and one of my wheels was spinning' like crazy while the other was on the pavement and wasn’t moving. I don’t even know if I have limited slip. However I would really like to buy a locker and I just need someone to give me some ideas. Thanks.

 

sounds like you have an open diff/

you can check here

https://www.f150online.com/forums/ar...e-sticker.html

 

according to that it says i have 3.55 Gears with no Limited Slip. Now anyone know where i can find a locker or a posi?

 

http://www.4wheelparts.com/Drivetrai...pn=DET162SL60A

Would this work?

 

no that's for a dana 30 rear end, you either have a ford 8.8 or ford 9.75 rear end, there is a tag on the back of the dif. pumpkin that will tell you the info.

 

Pumpkin? hahaha thanks man

 

Theres no tag on my differential but being that its only a 1/2 ton I think its only a 8.8

 

they put 9.75 in half tons. if you have a 5.4 then its a 9.75.

if the diff cover is round then its an 8.8 if its more....not of a circle shape then its a 9.75. sorry i forget the amount of bolts each have on the diff cover

 

o wait yea it is a 9.75. Its a 5.4 any idea how many spline's my axel would be? 31 or 34?