Thread: Loud intermittent rattle on startup.
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Old 06-12-2016, 07:29 AM   #6
Smallblock454
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Join Date: Jun 2014
Location: LB, Germany
Posts: 1,507
As said catalysator heat shield. These are holden by DZUS fasteners. In general they rust away and you have to replace them. Expensive.

Regards, Markus
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