Has anyone had good or bad experiences using Aftermarket parts for their LS400. (I'm talking about stock parts, not performance parts) Any reference and opinions would be great.

 

For me,, depends on which parts you are talking about. Many here have used aftermarket for things such as suspension, maintenance, etc. You have to be very careful and just know what you are looking for. It is not necessarily a bad thing to use something other than OEM, however, you also need to be aware that all aftermarket parts are not made on an equal quality basis.