Sorry, if the AW4 is an auto then you also want to extend the transmission breather. There is alot more to deep water crossings then the intake but it is very important. I had my TJ actually over hte hood in water a couple of times without drowning the engine. Got caught in a mud hole once and it filled the engine bay and swamped the motor, pulled the spark plugs on the spot, turned over the engine (spit water all over the idiots on that side of the Jeep, I highly recommend that part of the repair), cleared all the water out of the intake, then towed it out, pulled the oil plug, changed it 15 times till it was draining without the milky substance, and checked the tranny fluid which was clear like it should be. Two weeks later I replaced my transmission for a repair bill of 4K dollars. STAY AS FAR AWAY FROM WATER AS POSSIBLE!!!!