Upgrade your boat oil filter with the Quicksilver® Mercury® MerCruiser or Inboard Engine Oil Filter. This Quicksilver marine oil filter sports a metal shell that's over 50% thicker than conventional filters, with a durable paint finish to resist corrosion even in saltwater environments. The Quicksilver Mercury MerCruiser or Inboard Engine Oil Filter fits most Mercruiser and other GM marine engines. Manufacturer model #: 35-866340Q03. Mercury MerCruiser boat oil filter. Metal shell 50% thicker than conventional oil filters. Fits most Mercruiser and other GM marine engines.