You will find many parts in the engine with the KL designation on them, KL02, KL01, KL05, KL1H1, KL1A1, KL101, and so on. All it means is that the part is designed for a KL-series engine, nothing more. As for the Mitsubishi parts, Xeon is right. Mitsubishi is the largest corporation in Japan, they have interests in automobiles, electronics, logging, shipping, whaling, fishing, energy, you name it they probably have a finger in it. Many companies buy parts from them because it is cheaper than having to design and build them in house.