The original YJ Wrangler offered a notoriously reliable 2.5-liter four-cylinder or the 4.2-liter I6 that was the predecessor to the equally revered 4.0. The TJ generation used the 2.5-liter I4 ...

It's best to seek out a YJ from those last two years with the external hydraulics. Early TJs Had Bugs, But 2005-2006 Models ...