Ngk, br8hs blyb, spark plug, used for marine applications atv 2004-1997 lem, 2004 unison, 2005-2000 united motors, m/c 2003-1996 aprilia, 1982 honda, 2001-1998 yamaha, pwc 1997-1995 mastercraft wet-jet, 2005-1990 yamaha, snowmobile 1998-1982 yamaha, i/o 2005-1996 yamaha, o/b 2001-1994 mariner, 2006-1995 mercury, 1981-1977 spirit suzuki & 2000-1980 suzuki.