Description NGK PZFR5F11 spark plug
NGK PZFR5F-11 spark plug, PZFR5F11
Reference Mercury 8556721
for Optimax V6 2.5L 115-225 (1997-2002) engines
Mercury recommends replacement with IZFR5G
In the same range
NGK PZFR5F-11 spark plug, PZFR5F11
Reference Mercury 8556721
for Optimax V6 2.5L 115-225 (1997-2002) engines
Mercury recommends replacement with IZFR5G