I bought this high/low bulb set as an upgrade for my 2016 Expedition XLT. The low beams installed just fine, and showed a definite improvement over the output of the stock bulbs (although I do occasionally get flashed by oncoming drivers). The high beams, however, would not fit without modification. The problem is that the heat sink is too wide, and it hits the side of the light housing when you try to rotate the bulb to lock it into the socket. I broke one of the cooling fins while trying, and decided to grind down the restt of that side of the heat sink rather than attempt to grind out space in the much more expensive light housing. This modification allowed the bulb to fit and rotate into locked position, and hopefully the lifespan won't be too greatly shortened by the reduced cooling area. The lesson I learned: don't buy a LED high beam bulb for this specific application unless the heat sink has a SMALLER diameter than the tabs that fit into the bulb holder. For example, this manufacturer has a right-angle HB3 bulb design that would be a much better fit in this vehicle (assuming the connector faces the right direction when the bulb is locked in place...).