What Is This?

Quote:

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Originally Posted by Homestar

A 50 cent piece?

Oh, the black bit... [bigwhistle]

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If it's got the Queen's head on it, it's mine. I lost it working on a Disco.

its a former or part there of, or at least it was.

Most likely it will have come from a hose that has a branch in it. Replace the hose that lost it, while its not important for the integrity of the hose the bit thats left in there will work against the hose with the engine vibrations and can chew out the inner lining.