4r70w Parts

[davisjstone]

Cap is not sufficient if you are running deep water. groceries, ice cream trips are fine with just the cap.

okay thanks. That helps as its mostly going to make ice cream trips...someday

 

[bigmuddy]

My understanding is the caps were put on the 2 wheel models and the ones with the extended tubing were on the all wheel models.

 

[lars]

Pull the OEM fitting out with a pair of pliers. With it out you can see daylight where the vent hole is through the rear of the transmission. Stuff a rag or similar in there. Drill/tap vent hole for 1/4 NPT fitting (1/8 NPT might work but I think it's a little sloppy). Use a little grease on the tap to help capture chips. Install 90° hose barb fitting for hose size of your choice, clock it in your favorite direction. Push on hose, terminate free end at location of your choice. In my case, a breather in the engine compartment that terminates all the gear cases on my Bronco. Done.