Where can i buy the navigation unit for my 2006 g35 coupe? What is the cost??

Check out http://crutchfield.com/S-Bv569m7pdKt/cgi-bin/ProdGroup.asp?g=182350&avf=Y for various systems that will fit your car.

If you go aftermarket (which is undoubtedly the way to go)

Expect to pay at least $1200 for a DVD based unit.
For a harddrive unit, expect to pay about 2 grand.
See if you can get the Infiniti Studio on wheels harddrive navi unit.

Go to Best Buy and get a hand held unit, its 1/10th the cost of the OEM. If you want the Infinity Unit, check the salvage lot for a wrecked car. or E-bay.

Best Buy is ur 'best' option. l do not think the $2,800 price tag on the OEM is worth it at all. Yes, it is integrated into the car & it looks nice but the equipment is old & outdated. Does not let u enter in items when u r moving & very hard to use compared to the newer generation GPS systems. Look at the tom tom GPS systems. l have been reading a lot of magazines & they have gotten a lot of praise for their ease of use & practicality. They typically range from 300-800. Good luck!

My husband owns a 06 g35.he has all the bells and whistles..but he is in this club on g35driver.com and l have seen banners posted that have items forsale.. l would try there.

Sorry, not a car person and do not really know a price.but it is a great thing to have.we use it alot.and you can also watch dvd is l am told...not really sure if that is true.but l would try that site just to check it out..

Good luck!

Try Ebay