This 4 pack Champion Copper Plus 809 Spark Plug (RA6HC) replaces Bosch 7409, Bosch 7416, Bosch 7700, Bosch 7701, Bosch X4C, Bosch X5DC, Bosch XR2CS, Bosch XR4CS, Bosch XR5DC, Bosch Y6DC, Motorcraft HG2, Motorcraft HG22C, Motorcraft HGS22C, Autolite 4163, Autolite XS4163, NGK 4179, NGK 4339, NGK 4929, NGK 7162, NGK 92238, NGK 97058, NGK DPR8EA9, NGK DPR8EV9, NGK DR8EA, NGK DR8ES, NGK DR8ESL, NGK KR8AI, NGK 97768, NGK D8EA, NGK D8EV, NGK DCPR8E, NGK DP8EA9, NGK DP8EV9, Prestolite 12G2, Prestolite 12G3, ACDelco R121XLS, ACDelco S121XL, Torch D7CA, Torch D7RC, Torch D8RC, Torch D8RTC, Torch D8TC, Torch DK7RTC, DENSO X24EPRU9, DENSO X24EPRZU9, DENSO X24EPU9, DENSO X24EPZU9, DENSO X24ESRU, DENSO X24ESU, DENSO X24ESZU, DENSO X24EU, OEM parts and is perfect for replacement or a performance upgrade.