Can someone explain what happened there? Seriously. Is there an actual reason this would happen?

Wondering, because I just replaced mine with the exact same thing. Mine runs fine. Just wondering why it would happen with one but not the other.

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1994 C280, dark green metallic
105k miles

1991 190E 2.6, Black
191,500 miles
(sold to another forum member)

2003 Chevy Tahoe LT, Redfire Metallic
105k miles

1989 Mustang GT Cobra Convertible
43k miles