The HDX16 fits the following Models; Fat Bob 1979-1980, Fat Boy 1984-1990, Low Rider (FX/FXR) 1984-1994, Softail 1983-1990, Sportster 1979-1996, Super Glide 1978-1994, Wide Glide 1980-1986. Replaces following OE Battery numbers; 65991-82A, 65991-82B, 65991-75C The HDX16 is an exact fit premium battery designed for more than just performance. It is designed for the riding enthusiast. Made in the same manufacturing facility as the Original Equipment Batteries, the key to AGM technology is highly porous microfiber separators which completely absorb and trap the acid making this battery spill and leak proof. It is factory fresh and guaranteed to fit. The HDX16 is one of the most popular batteries ThrottleX offers and an all time customer favorite that has made its mark within the riding family. With ThrottleX just buy and ride. With confidence!