Spark Plug Kit Platinum - 8 Pack | Crusader RP030010 Crusader Spark Plug Kit Platinum - 8 Pack | RP030010 Crusader RP030010 Iridium Spark Plug Set Fits Crusader 5.0/5.7L GM engines Contains (8) Iridium AC Delco plugs Replaces Crusader 49078, R030010, Replaces AC Delco 41-10, Replaces Mercruiser 33-8M2018369, Replaces PCM RP030010, Replaces NGK ITR4A15, Replaces Volvo Penta 21467472