A great review from a new member!!!
Yes, a valid part number. Google the number and you will find many sites. NAPA's site sucks
I have to agree with you my friend without a doubt the NAPA Retail Website is the worst i have ever seen. Members please relay this feeling to NAPA Managers when ever you are there.
Yeah guys just go into Napa and ask for their BP1210 H4 Wagner bulb. It was like $10.99. I ride quite a bit at night and with all the critters and deer here in Ohio I think it was a smart move. Not to mention the visibility for other drivers. First and foremost DO NOT touch the glass part of the bulb. but to swap bulbs, you just remove the two screws on the sides of the chrome headlight bucket, then just carefully wiggly the front part of the bezel back and forth and up and down, it will give... Then carefully unplug the headlight bulb harness from the back of the bulb. Once you've done this, you then pull off the rubber cover, then you are presented with the bulb retaining clip, just push down on the one side of the clip and forward to release the clip and that will give you full access to the bulb! Respond with your success!

Hope this helps!
First off I would like to say WELCOME to 68novabbc and THANK YOU for a first class description and pictures of the effectiveness of the Wagner bulb. Really nice to have new members with such clarity.
I have used the Wagner bulb for 2 1/2 years. Had to change the bulb out after 2 years, yes they do not last as long as the stock bulb so when you find one get one for a spare.
If you go to a NAPA store do not rely on the employees to help you much, when I go they can't even find it in the catalog. So I go look in the light bulb section and just get it. Lots of sites sell them including Amazon. Have never found them at any other auto parts store. Some of the 4 wheel shops sell them, they are the stock bulb for many offroad vehicles.
This is the one modification that should be done by every rider, safer is always better.
Once again WELCOME to 68novabbc. PIC"S of bike are needed please. And since you mentioned the GoPro please review.