If one needs to buy Nissan Xterra parts then the best place to try would be your local Nissan dealer. Other possible retailers include Nissan Parts Zone and Everything Nissan.
You will need a tool called a puller to remove your crankshaft on your Nissan Xterra. You can purchase this toll at most auto parts stores, or borrow one from a shop or another mechanic.
I would try a junk yard in your area. Otherwise, you can order one from any Nissan dealer.
One can purchase a 2000 Nissan Xterra from the following places: Edmunds, Kelley Blue Book (KBB), Yahoo Autos, JC Whitneys, Crutch Field, Auto Anything, Car Gurus, Auto Parts Warehouse.
The 2009 Nissan Xterra is 6 ft. 0.8 in. (72.8 in.)1 one-touch power windows wide.
The 2010 Nissan Xterra is 6 ft. 0.8 in. (72.8 in.)1 one-touch power windows wide.
The 2012 Nissan Xterra is 6 ft. 0.8 in. (72.8 in.)1 one-touch power windows wide.
The 2014 Nissan Xterra is 6 ft. 0.8 in. (72.8 in.)1 one-touch power windows wide.
The 2011 Nissan Xterra is 6 ft. 0.8 in. (72.8 in.)1 one-touch power windows wide.
The 2008 Nissan Xterra is 6 ft. 0.8 in. (72.8 in.)1 one-touch power windows wide.
The 2013 Nissan Xterra is 6 ft. 0.8 in. (72.8 in.)1 one-touch power windows wide.
u go to autozone and buy a new one then u take the old one off and put the new one on.
There are a lot of sites giving reviews of the Nissan Xterra. The reviews can be found on sites such as Edmunds, Auto Trader, The Car Connection and Motor Trend.