I was able to replace he entire intake and didn't have to cut the stock one. A regular 2" coupler and a half of rubber coupler fits the airbox coupler.
The hardest part was getting the tight turn up from the airbox. 2 small sweep male to female elbows and a 6 1/4" straight pipe and it fits perfectly. 2 more small sweep elbows and we are on to the straight section behind the seat. This is a good place for a rubber coupler so the system can be removed easier.
You may notice a few sharpie marks where the elbows join. This is a great way to dry fit and mark them so you can glue them back in the exact same position.
For the breather tubes you will need:
1/4 tubing
3/8 tubing
1/4 plastic couplers (found by the sprinkler system parts at Lowes)
11" black pull ties
14" black pull ties
4 hours of quality garage time
Unplug the front diff vent from the frame. You will find it just above the radiator fan.
Remove the plastic coupler that had plugged into the frame. (I had to cut mine off)
Route the tube through the hole where the shifter cables come through.
Pull the loose end of the cooling fan tube out of the hole that points it down and out of the 2 slide clips that hold it to the fan shroud.
Plug the new 1/4' couplers into the current diff vent and fan vent.
Run your new 1/4' tubing under the fender well and under the rectangular frame piece at the base of the dash.
A few pull ties to keep everything neat.
The rear diff vent is just like the front one. It plugs into the frame near the shock tower on the passenger side. Make sure you have enough tube to run all the way to the top of the snorkel. I didn't cut mine off yet. Just tossed the roll up on the roof and cut it after getting everything run. If you have a 700-4 you will have to be a little creative running this vent line.
The fuel tank vent is a little more difficult. There is probably an easier way to do this but in order to get pull ties on it and keep it from flopping around, I removed both sides of the seat tray. I also had to remove the seat back to get the passenger side tray out. Pull the battery, unplug the computer, disconnect both sided of the solenoid, unplug the green plug, cut the wire tie clip, etc.
The original fuel tank vent comes off the fuel pickup housing and runs towards the passenger side, up then back towards the center of the cab, just under the front seat frame.
Use the original hose clamp to attach the new 3/8" tube to the fuel vent connector. If you have a new hose clamp, use it. The new tubing is a little smaller than the original so I took my pliers and bent them in just a little. I didn't want to run to Lowes for a 3rd time today.. Run the tube in the same path that the original one took but instead of running across the front, go down the side frame. You need to leave a little slack so the seat tray with all the electronics can fit back in. Run the tube out the back and toss the roll on the roof. You don't want to cut it yet.
With a little patients you can run the 2 vent tubes through the trim behind the seat and bring them out just under the intake tube. My partial OCD had me screwing around with these 2 tubes for about 2 hours trying to get the straight and not twisting around. I ran them behind the intake tube, just next to the roll bar and pull tied them to the intake tube and used electrical tape at the very top.
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