S&S, cylinder head gaskets. Diameter 4.00" .043"

Bad Boy 1995–1997 Disc Glide 1986 Dyna Glide Custom 1992 Dyna Glide Daytona 1992 Dyna Glide Sturgis 1991 Dyna Low Rider 1993–1998 Dyna Super Glide 1995–1998 Dyna Super Glide Convertible 1995–1998 Dyna Wide Glide 1993–1998 Electra Glide 1984–1988 Electra Glide Classic 1984–1998 Electra Glide Sport 1984–1994 Electra Glide Standard 1984–1998 Electra Glide Ultra Classic 1991–1998 Electra Glide Ultra Classic Special Anniversary Edition 1995 Fat Bob 1985 Fat Boy 1990–1999 Heritage Softail 1986–1990 Heritage Softail Classic 1988–1999 Heritage Softail Special/Nostalgia 1993–1996 Heritage Softail Springer 1997–1999 Low Glide 1984–1985 Low Glide Custom 1985–1987 Low Rider 1984–1992 Low Rider Convertible 1987–1993 Low Rider Custom 1988–1994 Low Rider Sport Edition (Fxrsl) 1986–1993 Road Glide 1998 Road King 1993–1998 Road King Classic 1998 Softail 1985–1999 Softail Custom 1987–1999 Softail EVO 1985 Softail Night Train 1999 Softail Springer 1988–1999 Sport Glide 1984–1992 Sport Glide Police 1984–1989 Sportster 1986–2003 Sportster 53 Custom 1998–2003 Sportster Custom 1996–2003 Sportster Deluxe 1990–1995 Sportster Hugger 1990–2003 Sturgis 1991 Super Glide 1985–1994 Super Glide II 1984 Wide Glide 1984–1986