NEW SEA-DOO RAVE VALVE PISTON Plastic piston for the cylinders rave valve OEM quality aftermarket replacement Fits all Sea-Doo 787 / 800 carbureted and RFI models Fits all Sea-Doo 947 / 951 carbureted models (not for DI models) Exact item is pictured Replaces OEM number: 420-854-449 290-253-257 Fits the following Sea-Doo Models/Years: XP / XP LTD. 1995-2002 SPX 1997-1999 GTX / GTX RFI 1996-2002 GSX / GSX RFI 1996-2000 RX 2000-2003 LRV 2000 Challenger 1996-1998