6 Pack of Ignition Coils This ignition coil meets or exceeds OEM specifications Replaces part # 3008M0077471, 300-879984T01, 300-8M0077471, 339-879984A1, 339-879984T00, 879984T01, 8M00774714, 184-0003 Check Compatibility List Below (Compare your part numbers as well) For use on Mercury Motors Listed Below: Mercury EFI 4-Stroke Models: 30, 40, 50 and 60 EFI HP Engines, Mercury Optimax: 75, 90, 115, 125, 200, 225 and 250 HP Engines, Mercury Optimax Pro XS: 115 Pro, 175 Pro, 200 Pro, 225 Pro, 250 Pro HP Engines, Mercury Optimax Racing: 225 XS. 225 Sport XS, 250XS, 250 Sport XS, 300XS, Mercury EFI 2-Stroke Models: 150 (2.5 EFI), 175 (2.5 EFI), 200 (2.5 EFI), 200 (3.0 EFI), 225 (3.0 EFI) and 250 (3.0 EFI), Mercury Racing EFI 2-Stroke: 225X and 300X