If your Ford or Mazda with the 4.0L SOHC V6 is rattling or needs a timing job, this MDSAFM kit has everything you need. It includes both timing chains (jackshaft to cams and crank to jackshaft), tensioners, guide rails, sprockets, balance shaft components, and even an oil line restrictor. Fits a bunch of models: Ford Explorer (1997-2010), Explorer Sport Trac (2002-2005, 2007-2010), Ranger (2001-2010), Mercury Mountaineer (1998-2010), and Mazda B4000 (2001-2010). The parts are made to OEM specs for reliable performance and long life. Installation isn’t super simple – you’ll need to take apart several engine components, so some mechanical know-how is handy (or just take it to a pro). But once it’s in, you’ll enjoy smoother running, better efficiency, and peace of mind. Comes with a one-year warranty for extra confidence. Get your engine back in time – literally!