Reddit reviews Bikers Choice EFI Sportster Gas Tank - Indented Style - 3.3 Gal. 012920

Not sure the years, but any EFI sportster tank. 2010 and up should be safe. The hole should be on the left side of the bottom of the tank if the tank is sitting normally. Carbed tanks have their hole on the right.

Something like this should work:

http://www.amazon.com/Bikers-Choice-EFI-Sportster-Tank/dp/B00JDPVJG2

If you want official, the part number for a 3.3 gallon off of a 2015 '883 is 61348-07, but they're 500 just primed.

Go here: http://www.shopronniesharleydavidson.com/

And click on the parts micro fiche. They don't have '16 48s there yet, but you should be able to use 2015.

Nice bike yourself! I love the Guerilla exhaust on there. The tires ride really smoothly, although she lags on the turns (as expected). I've found that she resists leaning at first, but once you get into the turn she wants to go over more and more quickly. I stopped noticing it after a few trips.

The tank is a Biker's Choice EFI (Indented Style). I got it for around $200 on Amazon, so you can't beat the price:
http://www.amazon.com/gp/product/B00JDPVJG2?psc=1&redirect=true&ref_=oh_aui_detailpage_o07_s00

Edit: the Amazon photo doesn't show the indentation on the tank, but you'll see it in my photos. They also offer another version with smooth sides.