GM 3.7L Oil Pan Gasket Set | Sierra 18-4366 Multiple piece oil pan gasket set fits Mercruiser model 470 marine engines. For Mercruiser 3.7L 224 CID model 470 All oil pan side gaskets and end seals or molded one piece gaskets required to seal one engine Replaces Mercruiser 27-72479, 27-72479T, 27-72479A5