What is the difference between a 3157k and 3157t?

The difference between a 3157K and a 3157T primarily lies in their design and intended use. The 3157K is typically used for applications that require a brighter light output, often seen in vehicle brake lights and turn signals, while the 3157T is designed for more standard lighting needs. Both bulbs have similar bases and wattages, but the color temperature and brightness may vary, making them suitable for different lighting applications. Always check your vehicle's specifications to ensure compatibility.