Has anyone tried replacing the stock d2s bulbs with an aftermarket type? Everything fits perfectly but when I turn it on, the bulb blows immediatel. When I pit the stock bulb back, it works fine. Any suggestions?

 

I replaced mine with OSRAM XENARC 66240 CBI 5000K bulbs.
D2S: Osram Xenarc 66240 CBI - HID Bulbs from The Retrofit Source Inc

Cheaper/less quality/less expensive D2S HID bulbs don't work well with the '10-'13 G37's ballasts. Causing them to flicker/shut down.
Since the Osram CBIs are OEM, this is not and issue...expensive yes, but well worth it!