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Showing results for tags 'plugs'.
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I have a 2007 malibu 247 RX. One of the zinc plugs in the aluminum exhaust manifold blew out. How do I fix this? Also why do they have the plugs? Is it like a freeze plug. If so what should I be looking for that caused the plug to blow out? My exhaust manifold is polished aluminum. The ones I see online are black. Any difference in the two other than color?