Agreed... MAYBE the damage was there prior to shipment, maybe not....
Will it "flow"? YES - but at a reduced capacity. Not exactly what you want...
BUT... if the seller insists that it was undamaged prior to shipment AND blames the carrier... that is on HIM TOO. Poor packaging of fragile items is a risk at best. I double box any questionacle item before shipping... Inside box packed with wadding or bubble wrap to immobize the part, more packing between the boxes.
Looks to have been shipped via FedEx...... was the item insured?? If so, remind him he will be compensated upon its return IF adequately insured....
The seller seens to be a legitamite automotive supplier... ask for a pre-paid RGA (Return Goods Authorization) BEFORE sending it back. That puts the shipping cost on him.
You have the right to dispute the sale thru EBAY - did you check the seller's rating brfore purchasing?? If less than 96% - that's on YOU. My