For a 1990 5.0 litre Town Car these are your Autolite plug #s (2545). I've fooled around with fancier, more expensive plugs, but frankly 5.0 litres love these plugs or Motorcraft plugs. Stock gap on a Lincoln is .050". I gap them between .055 and .060, with an MSD coil.

Owner caption August 2005 · Photo 14 of 445