Partsam 912 921 LED Backup Light Bulbs T10 42-SMD White LED Bulbs Trunk Cargo Lights Bulbs 2PCS No modification needed. Just plug and play. Easy Installation; New SMD technology w/ Bulit-in 42 mini SMD chips; Diameter: 35 millimeter(1.38 inch), pls check your bulbs length before making order. Cross Reference Part Number: 158,161,168,175,194,558,579,T10,280 285 447 464 555 558 585,1252 2450 2652 2921 2825 921 906 579 Application on: use for Backup Reverse Lights, Interior (Map, Dome, Trunk ) License Plate Light, Parking Light, Corner Light, Side Marker Light, Tail Light, etc. Common use for Car, Truck, Motorcycle, Boat, RV, Trailer, etc. Work at 12 Volts. Brighter than LED + Longer life time. Compared with traditional LED bulbs, it has less heat output and extremely low power consumption. It has a 180 degree of intense illumination. NotesPlease make sure your car circuit is working well before installation, as the bulbs will be burn may occur if there is a current spike or volte leak in your vehicle after the new bulb installed, it is not the issue of Partsam product quality. <span class="a-text-bold">Partsam</span>is one of the largest automotive aftermarket LED lights providers in North America. Customers speak highly of our LED SMD/Cree/Epistar lights thanks to our continuous efforts. In the past years, we were devoted to improving our marker quality, expanding our marker types, adopting the latest technology, delivering the best LED lights for our customers and making them enjoy the best ever shopping experience. Partsam offers an extensive line of high quality lights for car, truck, trailer, boat, bus, lorry, van, caravan, camper, RV, etc. You can find all the position lights and accessories you need in Partsam! <span class="a-text-bold">Application:</span> use for Backup Reverse Lights, Interior (Map, Dome, Trunk ) License Plate Light, Parking Light, Corner Light, Side Marker Light, Tail Light, etc. Common use for Car, Truck, Motorcycle, Boat, RV, Trailer, etc. <span class="a-text-bold">Cross Reference: </span> 168,194,2825,W5W,W5WB,T10,906,912,916,917,920,921,922,T15 <span class="a-text-bold">LED Type:</span>High power <span class="a-text-bold">Color Temp.:</span> 6000-6500K White <span class="a-text-bold">Package included</span>: 2 x LED Bulbs