Optional spacer for Sea-Doo impellers.
In 2004, Sea-Doo released its 159mm pump system. This new pump system was installed in various; 215hp, 255hp, and 260hp Sea-Doo models from 2004 to 2007. In 2008 Sea-doo made a mid-season change to the mounting interface for the impeller in the 159mm pump system. This new mounting interface included an additional counterbore on the back side of the impeller. This new counterbored mounting interface was used on all Sea-Doo models from 2009 to current.
This impeller spacer fills the counterbore on the newer style of impellers, allowing newer style 159mm impellers to be used in the older style pump and stator housings.
If you are using a 159mm pump, impeller, and stator housing from the 2008 Sea-Doo model year we strongly recommend that you disassemble and check this interface prior to ordering replacement impellers. Unfortunately there is no way to tell which particular models of Sea-Doo received which style of impeller interface during this year of mixed production.