The 1994 Lebaron was offered with a choice of a 2.5-liter four-cylinder or a 3.0-liter V-6 engine. Both engines came from the factory with Champion spark plugs, and Chrysler recommends replacing them every 30,000 miles.
Spark Plug Gap
The 2.5-liter engine uses Champion plug number RN12YC, using a 0.035-inch gap. The 3.0-liter came with RN11YC4 Champions, using a gap of 0.041 inch. Both spark plugs should be torqued to 20 foot-pounds during installation.