Firstly check the new ones are suitable for your car, Are they the right ones?
Go back to your supplier and confirm with him/her. or check yourself. Do they look the same?
You`ve done the hardest bit, getting them out!
if the new ones won`t fit will the old ones go back in? Sometimes its just a little difficult to line up ang get the threads to mesh without crossing, Don`t force them in, it will get cotly then. Try to be calm and methodical and you should get there
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