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I would like to see where you are getting the idea that the dealer is putting on a reconditioned unit unless this is something they just started. The dealers were told to dispose of the unit, I haven't heard of them being sent back to Eaton. When the recall first came out Ebay was flooded with cheap used units that were warranty takeoffs sold by the tech that took them off. The rattle will not "eventually damage your engine"-I have never heard this stated before. What will happen is eventually a groove will be worn in the center shaft-the center shaft but it will do no harm to the engine or supercharger. The sellers of the solid couplers say the dust from the spring rubbing the shaft will cause accelerated wear on the front bearing-I have no first hand knowledge of this ever happening and its a sealed bearing so I question the validity of this. I am not knocking the solid couplers at all-I believe they are the better choice for high performance use. Its just that every body thinks the rattle is a kiss of death and its not. I still am willing to bet the new unit you get will not have a solid coupler-no matter what the dealer may be telling you. The easy wat to find out for sure is remove the belt and quickly rock your pulley back and forth by hand you will feel a slight give as you rock it verses zero play of the solid. The coupler with the spring and grease is perfectly fine and will last just as long as a solid coupler. I used to be in the automotive parts and service business and still try to keep up with things, but have been out of it for a long while so its possible GM may be supplying reconditioned unit but this is the first Ive heard of it.
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