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Head Gaskets - GM has new MLS?

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Old 12-17-2004, 09:53 PM
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Default Head Gaskets - GM has new MLS?

I had a spare head gasket for an LS engine, pn 12558810 (left side), so I ordered a couple more to use on the engines I am building. GM didn't list the 12558809 part any longer so I got the replacement part. When I got the gaskets I noticed that they were copper colored multi-layer metal (pn 12573949) ...kinda like the Cometic MLS.
Are these gaskets good for either side now? Anybody have any experience with them? Thanks...

Last edited by CharlieLed; 12-19-2004 at 02:59 PM.
Old 12-18-2004, 03:36 PM
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bttt...
Old 12-19-2004, 08:02 AM
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yes you can use them on either side and havent had one or seen one blow out yet




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