There is a "rod" that connects with the resovoir on the truck. It has snapped in

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half and need to find a replacement for it. Chevy does not have one. They stopped making them. I have the GM part number which is 15616090 they gave me to match it, but that is just for the clutch master cylinder/resovoir. All i need is the rod that is about 6 inches long and has a ball at one end and a O at the other end.