i have a 2001 ranger with the 4.0 sohc, and i read somewhere that it has the wrong spark plugs in it from the factory. i was wondering if that is true and if so what are the correct ones. or waht do you think i should run?

 

not sure how "wrong off" they are as ur still running ur truck.... but on the other thread, proly the one u read already says what part numer u should search for