Sea-Doo Wear Ring (155 MM) GSX/GTX/XP/LRV/RX/LE/GTI/GTS/Sportster /3D /Speedster /947 DI 271000653 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 Works with all OE Plastic Pump 155mm Housings  SBT's Delrin wear rings are created as a replacement to OEM wear rings for your Seadoo. The Seadoo wear ring aids in stopping speed-robbing cavitation in your worn jet pump. Our SBT Delrin wear rings and liners will restore the tight clearance to your impeller. A Jet Ski or SeaDoo wear ring is a sacrificial ring that is installed into the jet pump to provide a minimal clearance for the impeller to build thrust.