Filler block toast? (Water pump Replacement)

Biggyniner

Petty Officer 2nd Class
Joined
Apr 6, 2007
Messages
103
Hi guys,

Doing my water pump and I noticed that the filler block top looked pretty squished and it might be time to change, see pic... The top had some loose material I pulled off.

If I replace this do I need to run a bead of RTV on top? I saw someone online use hi-temp RTV to "help keep exhaust gasses out."
 

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