1. Spare Tie Rods- the most breakable item on your rig.
2. CV Shafts - If you break it, you'll get off the trail, but you week is done if you don't have a spare.
3. 14 mm washers for when your shims fall out. Plenty of folks who have the blue UCA's have issues keeping them in there. While your at it, back the pivot bolts up with another nut on the backside and run a zip tie through the shims you currently have so when they do eventually fall out, they will not go anywhere.
4. Center pins for the rear leaf springs, seen those snap about a dozen times now. You'll want to bring a few C-Clamps as well to help getting them back together.
5. A drain plug that expands. Seen three oil pan plugs get ripped out.
6. one set of spare belts
7. One extra used wiper blade.
8. I wouldn't worry about the alternator......192,000 miles and still going on the original, as well as the original starter and coil pack. O' I'm in mud, sand, and water alot as well.
9. One spare transmission if you have a 4L30..........wait a minute, better make it two or three.