SBT sells the motor on a core exchange basis. Visit Program Description for further details. This is a Standard remanufactured Yamaha FX SHO engine. It includes the cases, crankshaft, head assembly, all new internal parts and a 1-year no-fault warranty.To determine the correct SBT application, you must know the size of the earth plate (big or small) and if there is a breather hole on the valve cover. Please call SBT for shipping rates 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 10-15 business days. Once SBT receives the core, this core has entered the remanufacturing process and cannot be returned.