Pitman Arm
Every now and then, we come across a Jeep that has twisted or snapped its pitman arm. It's usually a trip killer unless somebody has a spare. Pop one off of a GM car or Jeep the next time you're in the junkyard. Make sure the taper matches your tie rod ends or drill it for your rod end bolt before you hit the trail.
Fuel Pump
If you're running EFI or are just using an electric pump with your carburetor, bring along a spare fuel pump. It's best to match what you're currently using, but even a cheesy parts store external-tank unit for EFI or carbureted applications will get you off the trail.
Hub(s)
You don't need to carry two, but you'll want to bring at least one spare hub or drive flange on rigs so equipped. If you've got an open differential and you lose one hub, you'll essentially lose your entire front drive because only the side with the blown hub will spin. It's just like when you lift a tire when wheeling.
Spider Gears
If you're using a drop-in lunchbox locker, it's a good idea to bring your stock spider gears along just in case the teeth of the locker strip or the locker blows. If your locker breaks and it doesn't fuse itself together into a spool, you'll have no drive in that axle. Pop in your spider gears and limp out with your one-wheel-peel.
Solder or Radiator Patch
You can damage your radiator a lot of ways, from rolling and crushing it, to your mechanical fan blade hitting it, to catching trail debris. If you've only got a minor leak, you can probably drop some over-the-counter stop leak in and motor on. If you've done real damage, you can usually crimp and solder the damaged tubes shut. Most hardware stores have high-quality solder and small propane torches that easily fit in a toolbox.
U-Joint
We've said it several times in this story alone, but you should carry at least one U-joint of every type that's on your vehicle. If you've got a 297-X in your axles, a 1310 and 1330 in your front driveshaft, and a 1350 and 1410 in your rear driveshaft, that means you should be carrying five spare U-joints. It may seem redundant, but the one you don't have is the one that's going to break.
Miscellaneous Small and Weird Stuff
You should always have an extra rod end, tie rod end, bumpstop, bolts, and whatever else on your vehicle looks like it may be vulnerable and not easily found at an auto parts store in the middle of nowhere. Don't forget that if you run both left- and right-hand threaded rod ends or tie rod ends, you should carry a spare of each type.
MUST-CARRY ITEMS
No matter how modified your vehicle is and how bombproof the parts may be, here are some basic spare items every trail-bound Jeep should carry in addition to the parts listed elsewhere in this story.
-Tools
-Jack
-Duct tape
-Electrical tape
-Assorted nuts and bolts
-Spare tire and good plug kit
-Fuel filter
-Engine oil
-Gearbox oil
-Coolant
-Water
-JB Weld
-Short section of tubing that will fit inside radiator hoses
-Hose clamps
-Short piece of chain
-Vavle stems
-Valve cores
-Spark plugs