I just bought a 2003 Altima. Any one got anything I should be on the lookout for? I have already replaced the crankshaft sensor. Also, any good Nissan replacement parts sites? need a new keyfob too.

 

I'm presuming that you bought the car used so you don't have a "home nissan dealer" but normally you would go to your local dealer and they could get one made for your car.
You could try calling your local dealer to see what they can do; they should be able to make a new one for a couple bucks.

 

If you need any parts for your vehicle or advice PM me ....... I'm a nissan parts specialist at a major dealer in Virginia.

 

Have you tried checking out at car-stuff.com or on eBay? Got heard they were the best online resources of OEM parts.