I have a 79 F100 2wd. It has a 9 inch rear and I am looking to replace the outer bearings while I am doing all the brakes and painting the axle. When I look it up they ask for a 2900 or 3300 pound axle. How do I know which one have?

 

Post your VIN number or better yet a picture of the tag on the door jam. Also, the axle should have a little tag hanging by one of the bolts... if it's still there.

 

Here is the door tag. The axle tag is gone. Any body know which one it is? Thanks again

 

That's the federal cert. sticker. There should be a metal warranty plate on the back edge of the driver's door, below the latch. It will have an axle code on it.