How can I tell if my windshield is OEM?

I am getting water in through my driver side a pillar and I can see that it's due to my fail weather stripping on the exterior of the windshield.

I may just replace the whole windshield since it has 3 rock chips if it isn't OEM.

IF it is OEM I'll simply replace the weather stripping and get the chips fixed.

Thanks in advance.

I have an 07 if that helps.

 

It has Nissan on it. Aftermarket will say Safelite, etc.

BTW - the OEM isn't any better than the aftermarket ones. I'm on windshield #3. They all chip, crack, etc. Get a new windshield and they replace the weatherstrip anyway.

 

+1

 

Good to know. Thanks fellas.