SBT sells the motor on a rebuildable core exchange basis. Visit Program Description for further details. This is a Standard remanufactured SBT 587 engine that fits Sea-Doo. It includes the cases, cylinders, trued and welded Crankshaft, head, head cover, all new internal parts; a woodruff key. Installation Gasket Kit required. Please call SBT for shipping rates*Oval engine is shown. *At this time the item you are selecting is sold on a cores first basis, please refer to our Program Description on sending the correct components to SBT. The lead time average for turn around is approximately 5-7 business days. Once SBT receives the core, this core has entered the remanufacturing process and cannot be returned.