Features Direct replacement for factory incandescent 3156/3157-size tail light/rear turn signal bulb. 48 LEDs in omnidirectional design. Diffusing cover for even output and clean appearance when off. Molded connector with sturdy terminals. Adds more modern LED appearance. Plug and play simple installation. 250 lumens per bulb. Overview Design. Add a modern appearance to your vehicle with the 3156/3157 HP48 tail light/rear turn signal bulb. Populated with 48 Epistar 3014 LED chips the HP48 upgrades the factory yellowish incandescent bulb to a modern LED appearance. Thanks to the cap on the top the light output is directed backward and away from the bulb instead of straight out. A diffused PC lens surrounds the LED chips allowing the light output to shine much more uniformly. Best of all installation only takes minutes - simply take out your factory bulb and the HP48 will fit snugly in the socket. Brightness. At 250 lumens the HP48 is a cosmetic upgrade only and will provide the same light output as your factory bulb. All Diode Dynamics LED lighting is rated with accurate measured lumen figures not calculations or guesses. We test the true output in-house and provide you the real numbers to compare. Reliability. Unlike other bulbs on the market this bulb is built with constant-current circuitry along with transient suppression. That means this bulb will last for years not months with no flickering or failure. And like every Diode Dynamics product it's backed by an industry-leading three-year replacement warranty.