To provide you with an accurate quote for a replacement engine, we always need the serial number of your engine. The serial number plays a crucial role in ensuring that we can match the specifications of your engine during the remanufacturing process. Without it, we would be unable to build your engine to the correct specifications. The serial number acts as the engine's genetic code, providing information about horsepower, SUMP and manifold locations, and other critical details. By accessing this data, we can tailor your remanufactured engine to match your original engine’s capabilities and performance.