Ford Ranger coolant leak
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Which particular plastic piece? If it's a lil' part that sticks out then you're most likely looking at the drain plug in which case you should simply tighten. Any other plastic pieces (such as a radiator shell) could mean possible radiator damage and in most cases would require replacement as an optimal choice for repair. Have you checked the coolant hoses to make sure the leak is not from one of them and possibly dripping down the side of the radiator?
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