The Tohatsu Discontinued Main Jet #125 (part number 3C8-03151-1) is a crucial component for maintaining the optimal performance of your Tohatsu outboard motor. This main jet is responsible for regulating the fuel flow into the engine, ensuring that the air-fuel mixture is properly balanced for efficient combustion. Unfortunately, this particular main jet has been discontinued by Tohatsu, making it increasingly difficult to find a replacement. However, if you are lucky enough to come across one, it is highly recommended that you purchase it as a spare part for your outboard motor. Having a spare main jet on hand can save you from unexpected breakdowns and costly repairs in the future. It is always better to be prepared and have the necessary parts readily available, especially when dealing with discontinued items like the Tohatsu Discontinued Main Jet #125. Overall, this main jet is a valuable component that plays a crucial role in the performance of your Tohatsu outboard motor. If you are in need of a replacement or spare part, be sure to keep an eye out for the Tohatsu Discontinued Main Jet #125 to ensure the continued smooth operation of your engine.