Thermo-radiator cap

[greg crosby]

Does anyone know what Mr. Gasket thermometer radiator cap fits a 1988 3.7 470. I saw it suggested as a good way to check for overheating in a 470 a in the forum awhile back.

Mr Gasket site doesn't have a marine applications list. They give there models as "red" "silver" etc

#8933-000-066 I believe is the number on the stock one.

Thank you guys for your help!