Distribution growth is a big driver behind master limited partner price performance. This makes sense, given it's the reason many investors buy MLPs at all. But what specifically should investors look for when it comes to distribution growth?

In this video, Fool.com contributor Aimee Duffy suggests it's consistency, and she outlines the four most consistent master limited partnerships when it comes to distribution growth: Enterprise Products Partners (NYSE:EPD), Holly Energy Partners (NYSE:HEP), Genesis Energy (NYSE:GEL), and Sunoco Logistics Partners (NYSE:SXL).