What is the best head gasket for the 3.7 The fel-pro marine #17069. Sierra #18-3878 a true copper one. Or the victor reins #3909vm. Quicksilver #27-13709
Only the OEM Mercruiser head gasket should be used. It is designed specifically for the 470 while the others are auto head gaskets. since you are sealing a iron head to an aluminum block you need the best seal you can get.
