Thanks for the help. It's NAPA part #4905 $14.95
I think its a 4509.
Charles
A few weeks ago, I picked up 4 bulbs for about $25.00 including shipping on Ebay. I think he sells them in lots of 2 or 4. It can't hurt to have a spare in the glove box!
Please take note............ Hung has posted the p/n for the 28v bulb for the 152. The number above is for the 14v 150's and NOT the 152. Be careful which airplane you are asking for p/n's for and which aircraft you are giving p/n's for. Just don't want anyone to order the wrong bulb.
If you have a Illustrated Parts Catalog (which I consider a must for the aircraft owner) the bulb numbers are in the parts book.
Charles