There are a couple of different part numbers and I'm not sure what the differences are, so the first thing is, visit
https://www.infinitipartsdeal.com/ and enter your VIN. Then search "combination" to find the correct lamp for your ride. Then you can google that part number to find alternatives. However, buying the genuine part from InfinitiPartsDeal may be your best bet, their price was cheaper on both part numbers than anything I saw on eBay or Amazon.