Spark Plugs

SPARK PLUGS SPECIFICATIONS

ENGINE	PLUG TYPE	ELECTRODE GAP
4.0L 6-CYL	ZFR5N (NGK #)	1.00 mm (.040 in.)
4.7L V-8 (Exc. HO)	RC12MCC4	1.01 mm (.040 in.)
4.7L V-8 High Output (HO)	RC7PYCB4	1.01 mm (.040 in.)