Alright truck owners, listen up! If you're dealing with worn-out door latches on your Kenworth or Mack truck, this APPERFiT replacement set is about to make your life so much easier. We all know how those original factory door latches can wear out over years of use - they get loose, they stick, they just stop working properly. Well, this complete set includes both the left driver side AND right passenger side door latches, so you can fix both doors at once. The really cool thing about these latches is they're designed to match the exact dimensions and specifications of your original OEM parts - we're talking perfect fit for HLK2129, HLK2130, and all those other part numbers you might be looking for. They're built tough with high-quality materials that can handle the daily grind of truck life, and the electroplate finish helps them stand up to weather and wear. Installation is pretty straightforward if you're handy with tools, and once they're in, you'll notice how much more secure your doors feel. These fit a bunch of models including Kenworth T600A from 1986-1989, T600 Aerocab from 1994-2007, T600B from 1990-2007, T660 from 2008-2016, and Mack MC/MR models from 1978-1987. Plus, you get a full 1-year warranty for peace of mind. No more struggling with doors that won't latch properly!