Hey Jack, Check out the banner for Sea-Doo parts at the top of the page. That's send you to Sea-Doo warehouse where you can search by Sea Doo PWC parts. You can select your Spark and then check out the slide under Pump-All Models. Looking at the parts diagram, you can find the part number by the diagram's reference number. Either buy it from that site or search for the BRP part number at your favorite site or local dealer. Parts diagrams are invaluable for understanding how your PWC is put together.