My bulbs are all brass based, but when I went to the auto parts stores to buy some spares to carry all I could find were the steel ones (mainly made in China). So I went searching for a source. After using the web and calling them I found who showed a GE 2057 - their part number 44760 for $2.99 each, plus freight. I bought 10 and they are on the way. Since I have read stories about melting the impossible to get tail lights using steel based bulbs and other posts about others not being able to find the brass ones I thought I'd post it here. You may have a source, I didn't and if you don't - I hope this helps a few other owners.