This Skat Trak impeller is for the Yamaha WaveRunner or WaveJammer 500 models.
It is a stainless steel 3-Blade impeller, which is much more efficient than the stock aluminum impellers that come with these skis.
These impellers are very effective at reducing cavitation, providing a top speed gain while increasing bottom end acceleration as well. It’s simply one of the most noticeable increases you can do for your vintage PWC at a great-value price.
The WaveRunner and WaveJammer impeller fits into the mixed flow pump used specifically in these models only.