No rhyme or reason why you would have one over the other. I picked up a pair of the 3.622 figuring the larger one was for the diesel, but was wrong and had to make another trip to the parts store.
Can't guarantee yours has 3.22, but mine does.
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2005 CRD "
Ol' Blue"
Red Ryder carbine-action, two hundred shot range model air rifle with a compass in the stock and this thing which tells time.
My build page- RL Komodo Rear and TJM Front Bumper, armored, lifted, JBA Steel D30, 4.10s and ARB air lockers.