AC DELCO 41-101 Spark Plug Set Replaces PCM RP030010 Includes 8 Plugs 5.0 MPI & 5.7 Excaliber -2002 & Up Indmar 2006 up 5.7L engines Superceeds AC 41-993 & AC41-932 NOT recommended for Delco distributors! Only for use with HVS distributors GM 5.7 EXCALIBUR
Recommended by the manufacturers for optimum performance, these spark plugs are the correct heat range for your marine engine
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