I have successfully installed bulbs 3057, 3157 and 3457 in my Chrysler Town & Country mini-van, for the brake/stop lights.
Yes, the 3047 replaces the 3057.
For all practical purposes, they are interchangeable. To my eye the 3357 seeems to be brighter on the heavier filament. (brake/turn)
The 3157 is a clear bulb and the 3157NA is an amber color.
Well. I work at NAPA and it called for a 3057kx which we naturally don't have in stock. But when the customer pulled the bulb out it was a 3157. which will fit in its place. It might be some sort of long life bulb. Just put a 3157 in there. that's what most brake lights are.
Yes, the 4157 is just slightly more powerful than the 3157, 28.5w compared to 27w
The 1157 has a 15mm metal bayonet (push/twist) cap, while the 3157 has a plastic wedge (push-in) cap.
3157
#3157.
Yes, they more or less are. Both have two filaments, one for the parking light, and one for the brake light or turn signal. The parking light filament of the 3157 is a little brighter than the parking light filament of the 3057. The signal filaments of both bulbs are the same brightness.
LL stands for " long life " - more expensive , but supposed to last longer
maybe wrong bulbs 2057 or 3157 or 1156