Mitsubishi is a multi-faceted company. One of their specialties is electronics. I had one of their cars and the electronics were very good, but the tranny thats another story. They make a lot of electrical components used in a lot of different things all over the world including cars. They probably have a site, but I know they do a hundred different things besides making cars. It's not too strange to have a company outside of the manufacture have parts in the car, kind of like spark plugs.
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.
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