This 688-11603-00 Piston Ring set STD is new aftermarket Part Used on: For Yamaha 55HP 75HP 85HP 90HP Outboard Engine Parsun 85HP 90HP Boat Motor Fit For YAMAHA part number: 688-11603-A0-00 688-11603-00-00 (STD) It also used on these Outboard Models: Year 1993 - C55ELRR C55TLRR C85TLRR Year 1994 - 90TJRS 90TLRS C55ELRS C55TLRS C75TLRS C85TLRS Year 1995 - 90TLRT C55ELRT C55TLRT C75TLRT C85TLRT E48MLHT E75MLHT Year 1996 - 90TLRU C75TLRU C85TLRU E75MLHU P75TLHU Year 1997 - 90TLRV C80TLRV C90TLRV E48MLHV E75MLHV P75TLHV Year 1998 - 90TLRW B90TLRW C75TLRW C90TLRW E48MLHW E75MLHW P75TLHW Year 1999 - 90TLRX B90TLRX C75TLRX C90TLRX E48MLHX E75MLHX P75TLHX Year 2000 - 90TLRY C90TLRY E48MHY E48MLHY E75MLHY Year 2001 - 90TJRZ 90TLRZ C90TLRZ Year 2002 - 90TLRA Year 2003 - 90TLRB Year 2004 - 90TLRC Year 2005 - 90TLRD Year 2006 and Later 2-stroke 90TLR 6H1-1022121 90TLR 6H1-1035287