This is a G8 base, short halogen bulb. Measure your old bulb if you're not sure this is what you need. The color is a little warmer (yellower) than the bulb I replaced and just slightly dimmer. The difference is so slight that it doesn't bother me in the least. I have two lighted display cases side by side and it's hardly noticeable. If you are a perfectionist or obsessive about these things and have a number of these bulbs in use, say for under counter lighting, replace them all. These bulbs are very reasonably priced and have a good life expectancy.