The JK-series Jeep Wrangler had a pretty long production cycle, relative to most other cars. It succeeded the TJ-generation Wrangler and began production in 2007. It stayed in production for 11 more years, before the JK Wrangler was finally replaced by the JL Wrangler (the fourth generation) in 2018. Some folks did wonder though, as to the meaning of 'JK'. In its early years, the first road-going Jeep was referred to as the 'CJ', or Civilian Jeep. So, wondered if 'JK' stood for anything. In actuality, there's no meaning to those two letters beyond helping to distinguish between different generations of the Wrangler. That included the YJ, TJ, KJ, and most recently, the JL.