The fx4 package on the 2019 f 150 includes 31 electronic locking rear axle with 50l v8 engine 35l v6 ecoboostr engine or 30l v6 powerstroker diesel engine and though weve been talking a lot about the f 150 fx4 also appears on other ford vehicles. The ford f 150 is one of the best trucks that anyone can buy in america and like any good carmaker ford offers plenty of trims and packages for the f 150 but adding many of those options will mean that your f 150 will get more and more expensivethat said heres why choosing the fx4 off road package for your f 150 will give you the best of both worlds in terms of price and effectiveness . 2012 ford f 150 fx4 supercrew 4wdsee listing detailsdescription used 2012 ford f 150 fx4 supercrew 4wd for sale 16999 128964 mi with leather seats navigation system bluetooth backup cameracertified pre owned notransmission 6 speed automaticcolor black 16999 317 mo est. There are four engines available on the f 150 six trims and several body options with the largest selection of cars from dealers and private sellers autotrader can help find the perfect f150 for you autotrader has 1477 used ford f150s for sale including a 2013 ford f150 4x4 fx4 a 2013 ford f150 fx4 and a 2014 ford f150 4x4 fx4